1
|
Lee K, Han S, Ryu J, Cho SG, Moon DH. Prognostic value of left ventricular mechanical dyssynchrony indices derived from gated myocardial perfusion SPECT in coronary artery disease: a systematic review and meta-analysis. Ann Nucl Med 2024:10.1007/s12149-024-01915-7. [PMID: 38498236 DOI: 10.1007/s12149-024-01915-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 02/21/2024] [Indexed: 03/20/2024]
Abstract
PURPOSE Left ventricular mechanical dyssynchrony (LVMD) is an important prognostic factor in coronary artery disease. A growing body of evidence indicates that LVMD parameters derived from phase analysis of gated myocardial SPECT may allow risk stratification for future cardiac events. We performed a systematic review and meta-analysis on the prognostic value of LVMD on gated SPECT in patients with coronary artery disease. METHODS PubMed, Embase, and the Cochrane library were searched until August 25, 2022, for studies reporting the prognostic value of LVMD on gated SPECT for outcomes of all-cause death, cardiac death, or major adverse cardiovascular event (MACE) in patients with coronary artery disease. Hazard ratios (HRs) and their 95% confidence intervals (CIs) were meta-analytically pooled using a random-effects model. RESULTS Nine studies (26,750 patients) were included in a qualitative synthesis. Among the SPECT LVMD parameters used in various studies, high phase standard deviation, phase bandwidth, and phase entropy were widely evaluated and reported to be associated with high rates of all-cause death, cardiac death, or MACE. For five studies (23,973 patients) in the quantitative synthesis, the pooled HR of LVMD for predicting MACE was 2.81 (95% CI 2.03-3.88). Studies using combined phase parameters to define LVMD showed higher HRs than a study using phase entropy (p = 0.0180). CONCLUSION LVMD from gated myocardial SPECT is a significant prognostic factor for coronary artery disease. Phase analysis of gated SPECT may be useful for accurate risk stratification and could be applied for clinical decision-making in such patients.
Collapse
Affiliation(s)
- Koeun Lee
- Department of Nuclear Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sangwon Han
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-Ro 43-Gil, Songpa-gu, Seoul, 05505, Republic of Korea.
| | - Jeongryul Ryu
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-Ro 43-Gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwang-ju, Republic of Korea
| | - Dae Hyuk Moon
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-Ro 43-Gil, Songpa-gu, Seoul, 05505, Republic of Korea
| |
Collapse
|
2
|
Cho SG, Park C, Kim J, Kim KB, Kim HY. Discordant Uptake of Leg Thrombi Versus Pulmonary Emboli on 68 Ga-FAPI-46 PET/CT. Clin Nucl Med 2023; 48:e583-e584. [PMID: 37801589 DOI: 10.1097/rlu.0000000000004891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/08/2023]
Abstract
ABSTRACT Fibroblast activation protein inhibitor (FAPI) PET is gaining clinical relevance for visualizing activated fibroblasts in various diseases. Here, we report discordant FAPI uptake between venous thrombi of the lower extremities and pulmonary emboli. An 86-year-old man complained of left leg swelling and acute dyspnea; he was diagnosed with deep vein thrombosis involving the left femoral vein and acute pulmonary thromboembolism. Positive FAPI uptake was observed only in the thrombi of the left femoral vein, but not in the pulmonary emboli. Such discrepancies may indicate different thrombus constituents and chronologies even in the same patient.
Collapse
Affiliation(s)
| | | | - Jahae Kim
- From the Departments of Nuclear Medicine
| | | | - Hyung Yoon Kim
- Cardiovascular Medicine, Chonnam National University Hospital and Medical School, Gwangju, South Korea
| |
Collapse
|
3
|
Cho SG, Park KS, Kim J, Moon JB, Song HC, Kang TW, Yu SH. Tc-99m DMSA SPECT for Follow-Up of Non-Operative Treatments in Renal Injuries: A Prospective Single-Center Study. Korean J Radiol 2023; 24:1017-1027. [PMID: 37724588 PMCID: PMC10550745 DOI: 10.3348/kjr.2023.0149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 06/09/2023] [Accepted: 07/17/2023] [Indexed: 09/21/2023] Open
Abstract
OBJECTIVE The assessment of cortical integrity following renal injuries with planar Tc-99m dimercaptosuccinic acid (DMSA) scintigraphy depends on measuring relatively decreased cortical uptake (i.e., split renal function [SRF]). We analyzed the additive values of the volumetric and quantitative analyses of the residual cortical integrity using single-photon emission computed tomography (SPECT) compared to the planar scintigraphy. MATERIALS AND METHODS This prospective study included 47 patients (male:female, 32:15; age, 47 ± 22 years) who had non-operatively managed renal injuries and underwent DMSA planar and SPECT imaging 3-6 months after the index injury. In addition to planar SRF, SPECT SRF, cortical volume, and absolute cortical uptake were measured for the injured kidney and both kidneys together. The correlations of planar SRF with SPECT SRF and those of SRF with volumetric/quantitative parameters obtained with SPECT were analyzed. The association of SPECT parameters with renal function, grades of renal injuries, and the risk of renal failure was also analyzed. RESULTS SPECT SRF was significantly lower than planar SRF, with particularly higher biases in severe renal injuries. Planar and SPECT SRF (dichotomized with a cutoff of 45%) showed 19%-36% of discrepancies with volumetric and quantitative DMSA indices (when dichotomized as either high or low). Absolute cortical uptake of the injured kidney best correlated with glomerular filtration rate (GFR) at follow-up (ρ = 0.687, P < 0.001) with significant stepwise decreases by GFR strata (90 and 60 mL/min/1.73 m²). Total renal cortical uptake was significantly lower in patients with moderate-to-high risk of renal failure than those with low risk. However, SRF did not reflect GFR decrease below 60 mL/min/1.73 m² or the risk of renal failure, regardless of planar or SPECT (count- or volume-based SRF) imaging. CONCLUSION Quantitative measurements of renal cortical integrity assessed with DMSA SPECT can provide more clinically relevant and comprehensive information than planar imaging or SRF alone.
Collapse
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Jang Bae Moon
- Department of Nuclear Medicine, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Taek Won Kang
- Department of Urology, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Seong Hyeon Yu
- Department of Urology, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea.
| |
Collapse
|
4
|
Oh S, Hyun DY, Cho SG, Hong YJ, Kim JH, Ahn Y, Jeong MH. Case report: A fatal case of myocardial infarction due to myocardial bridge and concomitant vasospasm: the role of stress gated SPECT. Front Cardiovasc Med 2023; 10:1188095. [PMID: 37324639 PMCID: PMC10265674 DOI: 10.3389/fcvm.2023.1188095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/10/2023] [Indexed: 06/17/2023] Open
Abstract
Introduction Although most cases of myocardial bridge (MB) are clinically benign, sometimes it can be one of potential threats of myocardial infarction (MI) and life-threatening arrhythmia. In the present study, we present a case of ST-segment elevation MI caused by MB and concomitant vasospasm. Case Presentation A 52-year-old woman was brought to our tertiary hospital due to resuscitated cardiac arrest. Because the 12-lead electrocardiogram indicated ST-segment elevation MI, coronary angiogram was promptly commenced, which showed near-total occlusion at the middle portion of left anterior descending coronary artery (LAD). After intracoronary nitroglycerin administration, this occlusion was dramatically relieved, however, systolic compression at this site remained, indicative of myocardial bridge (MB). Intravascular ultrasound also showed eccentric compression with a "half-moon" sign, which is consistent with MB. Coronary computed tomography also showed a bridged coronary segment surrounded by myocardium at the middle portion of LAD. To assess the severity and extent of myocardial damages and ischemia, myocardial single photon emission computed tomography (SPECT) was additionally conducted, showing a moderate fixed perfusion defect around the cardiac apex, suggesting MI. After receiving optimal medical therapy, the patient's clinical symptoms and signs were improved then the patient was discharged from the hospital successfully and uneventfully. Conclusion We demonstrated a case of MB-induced ST-segment elevation MI which was confirmed with its perfusion defects via myocardial perfusion SPECT. There have been proposed a number of diagnostic modalities to examine its anatomic and physiologic significance. Among them, myocardial perfusion SPECT can be available as one of useful modalities to evaluate the severity and extent of myocardial ischemia in patients with MB.
Collapse
Affiliation(s)
- Seok Oh
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Dae Young Hyun
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Young Joon Hong
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Ju Han Kim
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Youngkeun Ahn
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Myung Ho Jeong
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Cardiology, Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| |
Collapse
|
5
|
Cho SH, You GR, Park C, Cho SG, Lee JE, Choi SK, Cho SB, Yoon JH. Acute respiratory distress syndrome and severe pneumonitis after atezolizumab plus bevacizumab for hepatocellular carcinoma treatment: A case report. World J Gastrointest Oncol 2023; 15:892-901. [PMID: 37275450 PMCID: PMC10237029 DOI: 10.4251/wjgo.v15.i5.892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/01/2023] [Accepted: 04/07/2023] [Indexed: 05/12/2023] Open
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is one of the most common cancers worldwide and has a high mortality. However, the treatment options for advanced HCC are limited to tyrosine kinase inhibitors, such as sorafenib and lenvatinib. Since previous regimens have an insufficient efficacy, the combination therapy of atezolizumab and bevacizumab (Ate/Bev) has been investigated, which showed an improvement in progression-free and overall survival. However, the adverse events of this combination therapy in advanced HCC have not been established. Herein, we report a novel case of an unresectable HCC and acute respiratory distress syndrome (ARDS) after a combination therapy of Ate/Bev.
CASE SUMMARY An 82-year-old male visited our outpatient clinic for an incidentally detected liver mass. Liver magnetic resonance imaging and enhanced chest computed tomography (CT) were performed, which showed arterial hyperenhancement with washout in delayed phase suggesting HCC, and a well-defined metastatic solid nodule, respectively. F-18 fluorodeoxyglucose positron emission tomography (PET)-CT exhibited multiple hypermetabolic lesions in the iliac bone, lumbar vertebrae, and femur. Because of the high burden of the intrahepatic tumor, transarterial radioembolization was initially performed; after 37 d, a combination therapy of Ate/Bev was administered. The patient visited the emergency department three days after Ate/Bev treatment complaining of dyspnea. He was diagnosed with severe pneumonitis based on CT. Despite administering oxygen via a high-flow nasal cannula, the P/F ratio was only 74; therefore, the patient was diagnosed with ARDS based on the overall examination results. Low tidal volume with high positive end-expiratory pressure, sedative agents combined with a neuromuscular blocker, and a systemic steroid were promptly applied to manage the ARDS. However, the patient did not recover from the hypoxia and expired 31 h after being admitted.
CONCLUSION Clinicians should be aware of severe pneumonitis due to the immune-related adverse events of this combination therapy, and patients should be closely monitored after therapy.
Collapse
Affiliation(s)
- Su Hyeon Cho
- Department of Gastroenterology and Hepatology, Chonnam National University Hospital and Medical School, Gwangju 61469, South Korea
| | - Ga Ram You
- Department of Gastroenterology and Hepatology, Hwasun Chonnam National University Hospital and Medical School, Hwasun 58128, South Korea
| | - Chan Park
- Department of Radiology, Chonnam National University Hospital and Medical School, Gwangju 61469, South Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Hwasun 58128, South Korea
| | - Jong Eun Lee
- Department of Radiology, Chonnam National University Hospital and Medical School, Gwangju 61469, South Korea
| | - Sung Kyu Choi
- Department of Gastroenterology and Hepatology, Chonnam National University Hospital and Medical School, Gwangju 61469, South Korea
| | - Sung Bum Cho
- Department of Gastroenterology and Hepatology, Hwasun Chonnam National University Hospital and Medical School, Hwasun 58128, South Korea
| | - Jae Hyun Yoon
- Department of Gastroenterology and Hepatology, Chonnam National University Hospital and Medical School, Gwangju 61469, South Korea
| |
Collapse
|
6
|
Park KS, Moon JB, Cho SG, Kim J, Song HC. Applying Pix2pix to Translate Hyperemia in Blood Pool Image into Corresponding Increased Bone Uptake in Delayed Image in Three-Phase Bone Scintigraphy. Nucl Med Mol Imaging 2023; 57:103-109. [PMID: 36998587 PMCID: PMC10043061 DOI: 10.1007/s13139-022-00786-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 11/24/2022] [Accepted: 12/15/2022] [Indexed: 01/04/2023] Open
Abstract
Purpose Delayed images may not be acquired due to severe pain, drowsiness, or worsening vital signs while waiting after blood pool imaging in three-phase bone scintigraphy. If the hyperemia in the blood pool image contains information from which increased uptake on the delayed images can be inferred, the generative adversarial network (GAN) can generate the increased uptake from the hyperemia. We attempted to apply pix2pix, a type of conditional GAN, to transform hyperemia into increased bone uptake. Methods We enrolled 1464 patients who underwent three-phase bone scintigraphy for inflammatory arthritis, osteomyelitis, complex regional pain syndrome (CRPS), cellulitis, and recent bone injury. Blood pool images were acquired 10 min after intravenous injection of Tc-99 m hydroxymethylene diphosphonate, and delayed bone images were obtained after 3 h. The model was based on the open-source code of the pix2pix model with perceptual loss. Increased uptake in the delayed images generated by the model was evaluated using lesion-based analysis by a nuclear radiologist in areas consistent with hyperemia in the blood pool images. Results The model showed sensitivities of 77.8% and 87.5% for inflammatory arthritis and CRPS, respectively. In osteomyelitis and cellulitis, their sensitivities of about 44% were observed. However, in cases of recent bone injury, the sensitivity was only 6.3% in areas consistent with focal hyperemia. Conclusion The model based on pix2pix generated increased uptake in delayed images matching the hyperemia in the blood pool image in inflammatory arthritis and CRPS.
Collapse
Affiliation(s)
- Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jaebong-Ro, Dong-Gu, Gwangju, 61469 Republic of Korea
| | - Jang Bae Moon
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jaebong-Ro, Dong-Gu, Gwangju, 61469 Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jaebong-Ro, Dong-Gu, Gwangju, 61469 Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jaebong-Ro, Dong-Gu, Gwangju, 61469 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, 160 Baekseo-ro, Dong-Gu, Gwangju, 61469 Republic of Korea
- Department of Artificial Intelligence Convergence, Chonnam National University, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jaebong-Ro, Dong-Gu, Gwangju, 61469 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, 160 Baekseo-ro, Dong-Gu, Gwangju, 61469 Republic of Korea
| |
Collapse
|
7
|
Cho SG, Lee JE, Kim HY, Song HC, Kim YH. Association between myocardial ischemia and plaque characteristics in chronic total occlusion. J Nucl Cardiol 2023; 30:388-398. [PMID: 35836093 DOI: 10.1007/s12350-022-03020-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/02/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND Myocardial ischemia varies in chronic total occlusion (CTO) despite the occluded artery. We analyzed whether it is associated with the plaque characteristics of the occluded segment. METHODS We retrospectively enrolled 100 patients with CTO who underwent myocardial perfusion single-photon emission computed tomography (SPECT) and coronary computed tomography angiography (CCTA) within 2 months. CTO-related ischemia was classified as moderate to severe (summed difference score [SDS] of the CTO territory ≥ 5) or mild or none (SDS < 5) on SPECT. Using CCTA, the atherosclerotic plaques of the occluded segment were subdivided into low-density (- 100-30 HU), intermediate-density (31-350 HU), and high-density (351-1000 HU) plaques. The plaque composition was compared according to the severity of CTO-related ischemia. RESULTS Moderate-to-severe CTO-related ischemia (n = 23) showed significantly higher proportion of intermediate-density plaques (72.4% vs. 64.0%), intermediate/low-density (7.10 vs. 3.65) and intermediate-to-high/low-density (7.78 vs. 3.80) plaque ratios, frequent shorter occlusion (30% vs. 6%), and lower volume (26.5 mm3 vs. 58.8 mm3) and proportion (11.4% vs. 20.8%) of low-density plaques. Multivariable analysis revealed significant associations between higher proportion of intermediate-density plaques and moderate-to-severe CTO-related ischemia, independent of occlusion length. CONCLUSION Higher proportion of intermediate-density plaques in the occluded segment was associated with the moderate-to-severe CTO-related ischemia.
Collapse
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Jong Eun Lee
- Department of Radiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hyung Yoon Kim
- Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea.
- Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea.
| | - Yun-Hyeon Kim
- Department of Radiology, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Radiology, Chonnam National University Medical School, Gwangju, Republic of Korea
| |
Collapse
|
8
|
Nye JA, Piccinelli M, Hwang D, Cooke CD, Paeng JC, Lee JM, Cho SG, Folks R, Haber M, Bom HS, Koo BK, Garcia EV. Determination of [N-13]-ammonia extraction fraction in patients with coronary artery disease by calibration to invasive coronary and fractional flow reserve. J Nucl Cardiol 2022; 29:2210-2219. [PMID: 34036523 PMCID: PMC10630982 DOI: 10.1007/s12350-021-02628-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 03/30/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND This study presents a new extraction fraction (EF) model based on physiological measures of invasive coronary flow reserve (CFR) and fractional flow reserve (FFR) in patients with suspected coronary artery disease (CAD) and normal index microcirculatory resistance (IMR). To ascertain the clinical relevance of the new EFs, flow measurements using the newly patient-determined EFs were compared to flow measurements using traditional animal-determined EFs. METHODS 39 patients were retrospectively selected that included a total of 91 vascular territories with invasive coronary angiography physiological measures. [N-13]-ammonia dynamic rest/adenosine-stress PET imaging was conducted in all patients and absolute myocardial flow was estimated using four published compartmental models. The extraction fraction during hyperemic flow was iteratively estimated by maximizing the agreement between invasive CFR and FFR with the non-invasive analogs myocardial flow reserve (MFR) and relative flow reserve (RFR) at similar physiological states, respectively. RESULTS Using the new patient-determined EFs, agreement between CFR vs MFR for Model 1 and 2 was moderate and poor for Model 3 and 4. All models showed moderate agreement for FFR vs RFR. When using published models of animal-determined EFs, agreement between CFR vs MFR remained moderate for Model 1 and 2, and poor for Model 3 and 4. Similarly, all models showed moderate agreement for FFR vs RFR using animal-determined EF values. None of the observed differences were statistically significant. CONCLUSIONS Flow measurements using extraction fraction correction for [N-13]-ammonia based on calibration to invasive intracoronary angiography physiological measures in patients with CAD were not discordant from those reported in the literature. Either patient-determined or traditional animal-determined EF correction, when used with the appropriate flow model, yields moderate agreement with invasive measurements of coronary flow reserve and fractional flow reserve.
Collapse
Affiliation(s)
- Jonathon A Nye
- Department of Radiology and Imaging Sciences, Emory School of Medicine, Emory University, 1841 Clifton Rd. NE, Atlanta, GA, 30329, USA.
| | - Marina Piccinelli
- Department of Radiology and Imaging Sciences, Emory School of Medicine, Emory University, 1841 Clifton Rd. NE, Atlanta, GA, 30329, USA
| | - Doyeon Hwang
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - C David Cooke
- Department of Radiology and Imaging Sciences, Emory School of Medicine, Emory University, 1841 Clifton Rd. NE, Atlanta, GA, 30329, USA
| | - Jin Chul Paeng
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea
| | - Joo Myung Lee
- Samsung Medical Center, Heart Vascular Stroke Institute, Seoul, Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Russell Folks
- Department of Radiology and Imaging Sciences, Emory School of Medicine, Emory University, 1841 Clifton Rd. NE, Atlanta, GA, 30329, USA
| | - Michael Haber
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Bon-Kwon Koo
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Ernest V Garcia
- Department of Radiology and Imaging Sciences, Emory School of Medicine, Emory University, 1841 Clifton Rd. NE, Atlanta, GA, 30329, USA
| |
Collapse
|
9
|
Piccinelli M, Dahiya N, Nye JA, Folks R, Cooke CD, Manatunga D, Hwang D, Paeng JC, Cho SG, Lee JM, Bom HS, Koo BK, Yezzi A, Garcia EV. Clinically viable myocardial CCTA segmentation for measuring vessel-specific myocardial blood flow from dynamic PET/CCTA hybrid fusion. Eur J Hybrid Imaging 2022; 6:4. [PMID: 35165793 PMCID: PMC8844325 DOI: 10.1186/s41824-021-00122-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 12/04/2021] [Indexed: 11/10/2022] Open
Abstract
Background Positron emission tomography (PET)-derived LV MBF quantification is usually measured in standard anatomical vascular territories potentially averaging flow from normally perfused tissue with those from areas with abnormal flow supply. Previously we reported on an image-based tool to noninvasively measure absolute myocardial blood flow at locations just below individual epicardial vessel to help guide revascularization. The aim of this work is to determine the robustness of vessel-specific flow measurements (MBFvs) extracted from the fusion of dynamic PET (dPET) with coronary computed tomography angiography (CCTA) myocardial segmentations, using flow measured from the fusion with CCTA manual segmentation as the reference standard. Methods Forty-three patients’ 13NH3 dPET, CCTA image datasets were used to measure the agreement of the MBFvs profiles after the fusion of dPET data with three CCTA anatomical models: (1) a manual model, (2) a fully automated segmented model and (3) a corrected model, where major inaccuracies in the automated segmentation were briefly edited. Pairwise accuracy of the normality/abnormality agreement of flow values along differently extracted vessels was determined by comparing, on a point-by-point basis, each vessel’s flow to corresponding vessels’ normal limits using Dice coefficients (DC) as the metric. Results Of the 43 patients CCTA fully automated mask models, 27 patients’ borders required manual correction before dPET/CCTA image fusion, but this editing process was brief (2–3 min) allowing a 100% success rate of extracting MBFvs in clinically acceptable times. In total, 124 vessels were analyzed after dPET fusion with the manual and corrected CCTA mask models yielding 2225 stress and 2122 rest flow values. Forty-seven vessels were analyzed after fusion with the fully automatic masks producing 840 stress and 825 rest flow samples. All DC coefficients computed globally or by territory were ≥ 0.93. No statistical differences were found in the normal/abnormal flow classifications between manual and corrected or manual and fully automated CCTA masks. Conclusion Fully automated and manually corrected myocardial CCTA segmentation provides anatomical masks in clinically acceptable times for vessel-specific myocardial blood flow measurements using dynamic PET/CCTA image fusion which are not significantly different in flow accuracy and within clinically acceptable processing times compared to fully manually segmented CCTA myocardial masks.
Collapse
|
10
|
Park KS, Seon HJ, Yun JS, Yoo SW, Lee C, Kang SR, Kim J, Cho SG, Song HC, Bom HS, Min JJ, Kwon SY. Precise characterization of a solitary pulmonary nodule using tumor shadow disappearance rate-corrected F-18 FDG PET and enhanced CT. Medicine (Baltimore) 2022; 101:e28764. [PMID: 35119036 PMCID: PMC8812657 DOI: 10.1097/md.0000000000028764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 01/16/2022] [Indexed: 01/04/2023] Open
Abstract
We aimed to characterize solitary pulmonary nodule (SPN) using imaging parameters for F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) or enhanced CT corrected by tumor shadow disappearance rate (TDR) to reflect the tissue density.We enrolled 51 patients with an SPN who underwent PET/CT and chest CT with enhancement. The FDG uptake of SPN was evaluated using maximum standardized uptake value (SUVmax) on PET/CT. The mean Hounsfield unit (HU) for each SPN was evaluated over the region of interest on nonenhanced and enhanced CT images. The change in mean HU (HUpeak-pre) was quantified by subtracting the mean HU of the preenhanced CT from that of the post-enhanced CT. TDR was defined as the ratio of the tumor area, which disappears at a mediastinal window, to the tumor area of the lung window. We investigated which parameters (SUVmax or HUpeak-pre) could contribute to the characterization of SPN classified by TDR value and whether diagnostic performance could be improved using TDR-corrected imaging parameters.For SPN with higher tissue density (TDR <42%, n = 22), high value of SUVmax (≥3.1) was a significant factor to predict malignancy (P = .006). High value of HUpeak-pre (≥38) was a significant factor to characterize SPN (P = .002) with lower tissue density (TDR ≥42%, n = 29). The combined approach using TDR-corrected parameters had better predictive performance to characterize SPN than SUVmax only (P = .031).Applying imaging parameters such as SUVmax or HUpeak-pre in consideration of tissue density calculated with TDR could contribute to accurate characterization of SPN.
Collapse
Affiliation(s)
- Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hyun Ju Seon
- Department of Radiology, Chosun University Hospital, Gwangju, Republic of Korea
| | - Ju-Sik Yun
- Department of Thoracic and Cardiovascular Surgery, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
- Department of Artificial Intelligence Convergence, Chonnam National University, Gwangju, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam, Republic of Korea
| |
Collapse
|
11
|
Cho SG, Kim M, Lee SH, Park KS, Kim J, Moon JB, Song HC. Evaluation of Non-infarct-Related Arteries Using C-11 Acetate PET in STEMI With Multivessel Disease. J Cardiovasc Imaging 2022; 30:169-180. [PMID: 35879252 PMCID: PMC9314231 DOI: 10.4250/jcvi.2021.0189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/14/2022] [Accepted: 02/17/2022] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND We analyzed whether C-11 acetate positron emission tomography (PET) can be used for the evaluation of non-infarct-related artery (NIRA) in patients with ST-elevation myocardial infarction (STEMI) and multivessel disease. METHODS We prospectively enrolled 31 patients with STEMI and at least one NIRA stenosis (diameter stenosis [DS] ≥ 50%). C-11 acetate PET was performed after successful revascularization for the infarct-related artery (IRA). Myocardial blood flow (MBF) and oxidative metabolism (kmono) were measured and compared between NIRA vs. IRA, stenotic (DS ≥ 50%) vs. non-stenotic (DS < 50%) NIRAs, and NIRAs with significant stenosis (DS ≥ 70% or fractional flow reserve [FFR] ≤ 0.80) vs. those without (neither DS ≥ 70% nor FFR ≤ 0.80). The correlations between PET and angiographic parameters were also analyzed. RESULTS MBF and kmono were significantly higher in NIRAs than those in IRAs. Stenotic NIRAs showed significantly reduced stress MBF, myocardial flow reserve (MFR), relative flow reserve (RFR) (0.72 ± 0.12 vs. 0.82 ± 0.14; p = 0.001), and stress kmono, as compared to those in non-stenotic NIRAs. NIRAs with significant stenosis had significantly lower stress MBF, MFR, and RFR (0.70 ± 0.10 vs. 0.80 ± 0.14; p = 0.001). RFR showed the best, but modest linear correlation with DS of NIRA stenosis (r = −0.429, p = 0.001). RFR > 0.81 could effectively exclude the presence of significant NIRA stenosis. CONCLUSIONS C-11 acetate PET could be a feasible alternative noninvasive modality in patients with STEMI and multivessel disease, by excluding the presence of significant NIRA stenosis.
Collapse
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Minchul Kim
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Korea
| | - Seung Hun Lee
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Korea
| | - Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Jang Bae Moon
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| |
Collapse
|
12
|
Cho SG, Kim HY, Bom HS. Anxiety as a risk factor in coronary artery disease among young women. J Nucl Cardiol 2021; 28:2593-2596. [PMID: 32333278 DOI: 10.1007/s12350-020-02101-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 03/05/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hyung Yoon Kim
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322, Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea.
| |
Collapse
|
13
|
Cho SG, Kim YH, Park HJ, Park KS, Kim JH, Ahn SJ, Bom HS. Prediction of radiation-related cardiotoxicity using F-18 FDG PET in non-small-cell lung cancer. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Radiation-related cardiotoxicity has been refocused nowadays as the follow-up was increased amomg the patients with advanced lung cancer. The early recognition of the occult cardiotoxicity enables the early intervention preventing clinically significant cardiac events or worsening of severity.
Purpose
We aim to search whether the F-18 fluorodeoxyglucose positron emission tomography (FDG PET) performed immediately after radiotherapy could predict the late cardiac events.
Methods
We retrospectively enrolled 133 patients with locally advanced, unresectable stage III NSCLC who underwent F-18 fluorodeoxyglucose positron emission tomography (FDG PET) immediately after CCRT for the response evaluation and survived at least for 6 months. Heart was recontoured according to the RTOG 0617 secondary analysis atlas for the dose volume analysis. Standardized uptake values (SUV) of the left ventricular myocardium were measured on FDG PET images. The patients were regularly followed up for the disease progression and complications. The primary end-point was the cardiac events grade ≥2 based on the Common Terminology Criteria for Adverse Events (version 5.0).
Results
FDG PET was performed at median interval of 11 days after CCRT. Fourty-two patients experienced cardiotoxicity during a median follow-up of 47 months (range, 12 – 123 months). In univariable analysis, mean heart dose, maximum SUV of the left ventricle (LV SUVmax), white blood cell count, and diabetes were associated with the risk of cardiotoxicity. In multivariable analysis, only higher mean heart dose (>11.1 Gy, hazard ratio 3.930 [95% confidence interval 1.933–7.988]; p=0.0002) and higher LV SUVmax (>12.84, 2.189 [1.162–4.124]; p=0.0152) were independently associated with increased risk of cardiotoxicity. In subgroup analyses, LV SUVmax remained predictive of cardiotoxicity among those with higher mean heart dose, but not among those with lower mean heart dose.
Conclusion
Early FDG PET after CCRT for NSCLC could predict the late cardiac events, especially in patients with high dose cardiac irradiation.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): This work was supported by a grant of the Basic Science Research Program through the National Research Foundation funded by the Ministry of Education, Republic of Korea (Principal Investigator: Sang-Geon Cho)
Collapse
Affiliation(s)
- S G Cho
- Chonnam National University Hospital, Nuclear Medicine, Gwangju, Korea (Republic of)
| | - Y H Kim
- Chonnam National University Hwasun Hospital, Radiation Oncology, Hwasun, Korea (Republic of)
| | - H J Park
- Chonnam National University Hwasun Hospital, Cardiololgy, Hwasun, Korea (Republic of)
| | - K S Park
- Chonnam National University Hospital, Nuclear Medicine, Gwangju, Korea (Republic of)
| | - J H Kim
- Chonnam National University Hospital, Nuclear Medicine, Gwangju, Korea (Republic of)
| | - S J Ahn
- Chonnam National University Hwasun Hospital, Radiation Oncology, Hwasun, Korea (Republic of)
| | - H S Bom
- Chonnam National University Hwasun Hospital, Nuclear Medicine, Hwasun, Korea (Republic of)
| |
Collapse
|
14
|
Cho SG, Kim HY, Bom HS. What is the optimal cardiac screening for asymptomatic transthyretin gene mutation carriers? J Nucl Cardiol 2021; 28:1958-1960. [PMID: 31768901 DOI: 10.1007/s12350-019-01970-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 11/13/2019] [Indexed: 11/25/2022]
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hyung Yoon Kim
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322, Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea.
| |
Collapse
|
15
|
Kudo T, Lahey R, Hirschfeld CB, Williams MC, Lu B, Alasnag M, Bhatia M, Henry Bom HS, Dautov T, Fazel R, Karthikeyan G, Keng FY, Rubinshtein R, Better N, Cerci RJ, Dorbala S, Raggi P, Shaw LJ, Villines TC, Vitola JV, Choi AD, Malkovskiy E, Goebel B, Cohen YA, Randazzo M, Pascual TN, Pynda Y, Dondi M, Paez D, Einstein AJ, Einstein AJ, Paez D, Dondi M, Better N, Cerci R, Dorbala S, Pascual TN, Raggi P, Shaw LJ, Villines TC, Vitola JV, Williams MC, Pynda Y, Hinterleitner G, Lu Y, Morozova O, Xu Z, Hirschfeld CB, Cohen Y, Goebel B, Malkovskiy E, Randazzo M, Choi A, Lopez-Mattei J, Parwani P, Nasery MN, Goda A, Shirka E, Benlabgaa R, Bouyoucef S, Medjahedi A, Nailli Q, Agolti M, Aguero RN, Alak MDC, Alberguina LG, Arroñada G, Astesiano A, Astesiano A, Norton CB, Benteo P, Blanco J, Bonelli JM, Bustos JJ, Cabrejas R, Cachero J, Campisi R, Canderoli A, Carames S, Carrascosa P, Castro R, Cendoya O, Cognigni LM, Collaud C, Collaud C, Cortes C, Courtis J, Cragnolino D, Daicz M, De La Vega A, De Maria ST, Del Riego H, Dettori F, Deviggiano A, Dragonetti L, Embon M, Enriquez RE, Ensinas J, Faccio F, Facello A, Topping W, Tweed K, Weir-Mccall J, Abbara S, Abbasi T, Abbott B, Abohashem S, Abramson S, Al-Abboud T, Al-Mallah M, Garofalo D, Almousalli O, Ananthasubramaniam K, Kumar MA, Askew J, Attanasio L, Balmer-Swain M, Bayer RR, Bernheim A, Bhatti S, Bieging E, Geronazzo R, Blankstein R, Bloom S, Blue S, Bluemke D, Borges A, Branch K, Bravo P, Brothers J, Budoff M, Bullock-Palmer R, Gonza N, Burandt A, Burke FW, Bush K, Candela C, Capasso E, Cavalcante J, Chang D, Chatterjee S, Chatzizisis Y, Cheezum M, Gutierrez L, Chen T, Chen J, Chen M, Choi A, Clarcq J, Cordero A, Crim M, Danciu S, Decter B, Dhruva N, Guzzo MA, Doherty N, Doukky R, Dunbar A, Duvall W, Edwards R, Esquitin K, Farah H, Fentanes E, Ferencik M, Fisher D, Guzzo MA, Fitzpatrick D, Foster C, Fuisz T, Gannon M, Gastner L, Gerson M, Ghoshhajra B, Goldberg A, Goldner B, Gonzalez J, Hasbani V, Gore R, Gracia-López S, Hage F, Haider A, Haider S, Hamirani Y, Hassen K, Hatfield M, Hawkins C, Hawthorne K, Huerin M, Heath N, Hendel R, Hernandez P, Hill G, Horgan S, Huffman J, Hurwitz L, Iskandrian A, Janardhanan R, Jellis C, Jäger V, Jerome S, Kalra D, Kaviratne S, Kay F, Kelly F, Khalique O, Kinkhabwala M, Iii GK, Kircher J, Kirkbride R, Lewkowicz JM, Kontos M, Kottam A, Krepp J, Layer J, Lee SH, Leppo J, Lesser J, Leung S, Lewin H, Litmanovich D, López De Munaín MNA, Liu Y, Lopez-Mattei J, Magurany K, Markowitz J, Marn A, Matis SE, Mckenna M, Mcrae T, Mendoza F, Merhige M, Lotti JM, Min D, Moffitt C, Moncher K, Moore W, Morayati S, Morris M, Mossa-Basha M, Mrsic Z, Murthy V, Nagpal P, Marquez A, Napier K, Nelson K, Nijjar P, Osman M, Parwani P, Passen E, Patel A, Patil P, Paul R, Phillips L, Masoli O, Polsani V, Poludasu R, Pomerantz B, Porter T, Prentice R, Pursnani A, Rabbat M, Ramamurti S, Rich F, Luna HR, Masoli OH, Robinson A, Robles K, Rodríguez C, Rorie M, Rumberger J, Russell R, Sabra P, Sadler D, Schemmer M, Schoepf UJ, Mastrovito E, Shah S, Shah N, Shanbhag S, Sharma G, Shayani S, Shirani J, Shivaram P, Sigman S, Simon M, Slim A, Mayoraz M, Smith D, Smith A, Soman P, Sood A, Srichai-Parsia MB, Streeter J, T A, Tawakol A, Thomas D, Thompson R, Melado GE, Torbet T, Trinidad D, Ullery S, Unzek S, Uretsky S, Vallurupalli S, Verma V, Waller A, Wang E, Ward P, Mele A, Weissman G, Wesbey G, White K, Winchester D, Wolinsky D, Yost S, Zgaljardic M, Alonso O, Beretta M, Ferrando R, Merani MF, Kapitan M, Mut F, Djuraev O, Rozikhodjaeva G, Le Ngoc H, Mai SH, Nguyen XC, Meretta AH, Molteni S, Montecinos M, Noguera E, Novoa C, Sueldo CP, Ascani SP, Pollono P, Pujol MP, Radzinschi A, Raimondi G, Redruello M, Rodríguez M, Rodríguez M, Romero RL, Acuña AR, Rovaletti F, San Miguel L, Solari L, Strada B, Traverso S, Traverzo SS, Espeche MDHV, Weihmuller JS, Wolcan J, Zeffiro S, Sakanyan M, Beuzeville S, Boktor R, Butler P, Calcott J, Carr L, Chan V, Chao C, Chong W, Dobson M, Downie D, Dwivedi G, Elison B, Engela J, Francis R, Gaikwad A, Basavaraj AG, Goodwin B, Greenough R, Hamilton-Craig C, Hsieh V, Joshi S, Lederer K, Lee K, Lee J, Magnussen J, Mai N, Mander G, Murton F, Nandurkar D, Neill J, O'Rourke E, O'Sullivan P, Pandos G, Pathmaraj K, Pitman A, Poulter R, Premaratne M, Prior D, Ridley L, Rutherford N, Salehi H, Saunders C, Scarlett L, Seneviratne S, Shetty D, Shrestha G, Shulman J, Solanki V, Stanton T, Stuart M, Stubbs M, Swainson I, Taubman K, Taylor A, Thomas P, Unger S, Upton A, Vamadevan S, Van Gaal W, Verjans J, Voutnis D, Wayne V, Wilson P, Wong D, Wong K, Younger J, Feuchtner G, Mirzaei S, Weiss K, Maroz-Vadalazhskaya N, Gheysens O, Homans F, Moreno-Reyes R, Pasquet A, Roelants V, Van De Heyning CM, Ríos RA, Soldat-Stankovic V, Stankovic S, Albernaz Siqueira MH, Almeida A, Alves Togni PH, Andrade JH, Andrade L, Anselmi C, Araújo R, Azevedo G, Bezerra S, Biancardi R, Grossman GB, Brandão S, Pianta DB, Carreira L, Castro B, Chang T, Cunali F, Cury R, Dantas R, de Amorim Fernandes F, De Lorenzo A, De Macedo Filho R, Erthal F, Fernandes F, Fernandes J, Fernandes F, De Souza TF, Alves WF, Ghini B, Goncalves L, Gottlieb I, Hadlich M, Kameoka V, Lima R, Lima A, Lopes RW, Machado e Silva R, Magalhães T, Silva FM, Mastrocola LE, Medeiros F, Meneghetti JC, Naue V, Naves D, Nolasco R, Nomura C, Oliveira JB, Paixao E, De Carvalho FP, Pinto I, Possetti P, Quinta M, Nogueira Ramos RR, Rocha R, Rodrigues A, Rodrigues C, Romantini L, Sanches A, Santana S, Sara da Silva L, Schvartzman P, Matushita CS, Senra T, Shiozaki A, Menezes de Siqueira ME, Siqueira C, Smanio P, Soares CE, Junior JS, Bittencourt MS, Spiro B, Mesquita CT, Torreao J, Torres R, Uellendahl M, Monte GU, Veríssimo O, Cabeda EV, Pedras FV, Waltrick R, Zapparoli M, Naseer H, Garcheva-Tsacheva M, Kostadinova I, Theng Y, Abikhzer G, Barette R, Chow B, Dabreo D, Friedrich M, Garg R, Hafez MN, Johnson C, Kiess M, Leipsic J, Leung E, Miller R, Oikonomou A, Probst S, Roifman I, Small G, Tandon V, Trivedi A, White J, Zukotynski K, Canessa J, Muñoz GC, Concha C, Hidalgo P, Lovera C, Massardo T, Vargas LS, Abad P, Arturo H, Ayala S, Benitez L, Cadena A, Caicedo C, Moncayo AC, Moncayo AC, Gomez S, Gutierrez Villamil CT, Jaimes C, Londoño J, Londoño Blair JL, Pabon L, Pineda M, Rojas JC, Ruiz D, Escobar MV, Vasquez A, Vergel D, Zuluaga A, Gamboa IB, Castro G, González U, Baric A, Batinic T, Franceschi M, Paar MH, Jukic M, Medakovic P, Persic V, Prpic M, Punda A, Batista JF, Gómez Lauchy JM, Gutierrez YM, Gutierrez YM, Menéndez R, Peix A, Rochela L, Panagidis C, Petrou I, Engelmann V, Kaminek M, Kincl V, Lang O, Simanek M, Abdulla J, Bøttcher M, Christensen M, Gormsen LC, Hasbak P, Hess S, Holdgaard P, Johansen A, Kyhl K, Norgaard BL, Øvrehus KA, Rønnow Sand NP, Steffensen R, Thomassen A, Zerahn B, Perez A, Escorza Velez GA, Velez MS, Abdel Aziz IS, Abougabal M, Ahmed T, Allam A, Asfour A, Hassan M, Hassan A, Ibrahim A, Kaffas S, Kandeel A, Ali MM, Mansy A, Maurice H, Nabil S, Shaaban M, Flores AC, Poksi A, Knuuti J, Kokkonen V, Larikka M, Uusitalo V, Bailly M, Burg S, Deux JF, Habouzit V, Hyafil F, Lairez O, Proffit F, Regaieg H, Sarda-Mantel L, Tacher V, Schneider RP, Ayetey H, Angelidis G, Archontaki A, Chatziioannou S, Datseris I, Fragkaki C, Georgoulias P, Koukouraki S, Koutelou M, Kyrozi E, Repasos E, Stavrou P, Valsamaki P, Gonzalez C, Gutierrez G, Maldonado A, Buga K, Garai I, Maurovich-Horvat P, Schmidt E, Szilveszter B, Várady E, Banthia N, Bhagat JK, Bhargava R, Bhat V, Bhatia M, Choudhury P, Chowdekar VS, Irodi A, Jain S, Joseph E, Kumar S, Girijanandan Mahapatra PD, Mitra D, Mittal BR, Ozair A, Patel C, Patel T, Patel R, Patel S, Saxena S, Sengupta S, Singh S, Singh B, Sood A, Verma A, Affandi E, Alam PS, Edison E, Gunawan G, Hapkido H, Hidayat B, Huda A, Mukti AP, Prawiro D, Soeriadi EA, Syawaluddin H, Albadr A, Assadi M, Emami F, Houshmand G, Maleki M, Rostami MT, Zakavi SR, Zaid EA, Agranovich S, Arnson Y, Bar-Shalom R, Frenkel A, Knafo G, Lugassi R, Maor Moalem IS, Mor M, Muskal N, Ranser S, Shalev A, Albano D, Alongi P, Arnone G, Bagatin E, Baldari S, Bauckneht M, Bertelli P, Bianco F, Bonfiglioli R, Boni R, Bruno A, Bruno I, Busnardo E, Califaretti E, Camoni L, Carnevale A, Casoni R, Cavallo AU, Cavenaghi G, Chierichetti F, Chiocchi M, Cittanti C, Colletta M, Conti U, Cossu A, Cuocolo A, Cuzzocrea M, De Rimini ML, De Vincentis G, Del Giudice E, Del Torto A, Della Tommasina V, Durmo R, Erba PA, Evangelista L, Faletti R, Faragasso E, Farsad M, Ferro P, Florimonte L, Frantellizzi V, Fringuelli FM, Gatti M, Gaudiano A, Gimelli A, Giubbini R, Giuffrida F, Ialuna S, Laudicella R, Leccisotti L, Leva L, Liga R, Liguori C, Longo G, Maffione M, Mancini ME, Marcassa C, Milan E, Nardi B, Pacella S, Pepe G, Pontone G, Pulizzi S, Quartuccio N, Rampin L, Ricci F, Rossini P, Rubini G, Russo V, Sacchetti GM, Sambuceti G, Scarano M, Sciagrà R, Sperandio M, Stefanelli A, Ventroni G, Zoboli S, Baugh D, Chambers D, Madu E, Nunura F, Asano H, Chimura CM, Fujimoto S, Fujisue K, Fukunaga T, Fukushima Y, Fukuyama K, Hashimoto J, Ichikawa Y, Iguchi N, Imai M, Inaki A, Ishimura H, Isobe S, Kadokami T, Kato T, Kudo T, Kumita S, Maruno H, Mataki H, Miyagawa M, Morimoto R, Moroi M, Nagamachi S, Nakajima K, Nakata T, Nakazato R, Nanasato M, Naya M, Norikane T, Ohta Y, Okayama S, Okizaki A, Otomi Y, Otsuka H, Saito M, Sakata SY, Sarai M, Sato D, Shiraishi S, Suwa Y, Takanami K, Takehana K, Taki J, Tamaki N, Taniguchi Y, Teragawa H, Tomizawa N, Tsujita K, Umeji K, Wakabayashi Y, Yamada S, Yamazaki S, Yoneyama T, Rawashdeh M, Batyrkhanov D, Dautov T, Makhdomi K, Ombati K, Alkandari F, Garashi M, Coie TL, Rajvong S, Kalinin A, Kalnina M, Haidar M, Komiagiene R, Kviecinskiene G, Mataciunas M, Vajauskas D, Picard C, Karim NKA, Reichmuth L, Samuel A, Allarakha MA, Naojee AS, Alexanderson-Rosas E, Barragan E, González-Montecinos AB, Cabada M, Rodriguez DC, Carvajal-Juarez I, Cortés V, Cortés F, De La Peña E, Gama-Moreno M, González L, Ramírez NG, Jiménez-Santos M, Matos L, Monroy E, Morelos M, Ornelas M, Ortga Ramirez JA, Preciado-Anaya A, Preciado-Gutiérrez ÓU, Barragan AP, Rosales Uvera SG, Sandoval S, Tomas MS, Sierra-Galan LM, Sierra-Galan LM, Siu S, Vallejo E, Valles M, Faraggi M, Sereegotov E, Ilic S, Ben-Rais N, Alaoui NI, Taleb S, Pa Myo KP, Thu PS, Ghimire RK, Rajbanshi B, Barneveld P, Glaudemans A, Habets J, Koopmans KP, Manders J, Pool S, Scholte A, Scholtens A, Slart R, Thimister P, Van Asperen EJ, Veltman N, Verschure D, Wagenaar N, Edmond J, Ellis C, Johnson K, Keenan R, Kueh SH(A, Occleshaw C, Sasse A, To A, Van Pelt N, Young C, Cuadra T, Roque Vanegas HB, Soli IA, Issoufou DM, Ayodele T, Madu C, Onimode Y, Efros-Monsen E, Forsdahl SH, Hildre Dimmen JM, Jørgensen A, Krohn I, Løvhaugen P, Bråten AT, Al Dhuhli H, Al Kindi F, Al-Bulushi N, Jawa Z, Tag N, Afzal MS, Fatima S, Younis MN, Riaz M, Saadullah M, Herrera Y, Lenturut-Katal D, Vázquez MC, Ortellado J, Akhter A, Cao D, Cheung S, Dai X, Gong L, Han D, Hou Y, Li C, Li T, Li D, Li S, Liu J, Liu H, Lu B, Ng MY, Sun K, Tang G, Wang J, Wang X, Wang ZQ, Wang Y, Wang Y, Wu J, Wu Z, Xia L, Xiao J, Xu L, Yang Y, Yin W, Yu J, Yuan L, Zhang T, Zhang L, Zhang YG, Zhang X, Zhu L, Alfaro A, Abrihan P, Barroso A, Cruz E, Gomez MR, Magboo VP, Medina JM, Obaldo J, Pastrana D, Pawhay CM, Quinon A, Tang JM, Tecson B, Uson KJ, Uy M, Kostkiewicz M, Kunikowska J, Bettencourt N, Cantinho G, Ferreira A, Syed G, Arnous S, Atyani S, Byrne A, Gleeson T, Kerins D, Meehan C, Murphy D, Murphy M, Murray J, O'Brien J, Bang JI, Bom H, Cho SG, Hong CM, Jang SJ, Jeong YH, Kang WJ, Kim JY, Lee J, Namgung CK, So Y, Won KS, Majstorov V, Vavlukis M, Salobir BG, Štalc M, Benedek T, Benedek I, Mititelu R, Stan CA, Ansheles A, Dariy O, Drozdova O, Gagarina N, Gulyaev VM, Itskovich I, Karalkin A, Kokov A, Migunova E, Pospelov V, Ryzhkova D, Saifullina G, Sazonova S, Sergienko V, Shurupova I, Trifonova T, Ussov WY, Vakhromeeva M, Valiullina N, Zavadovsky K, Zhuravlev K, Alasnag M, Okarvi S, Saranovic DS, Keng F, Jason See JH, Sekar R, Yew MS, Vondrak A, Bejai S, Bennie G, Bester R, Engelbrecht G, Evbuomwan O, Gongxeka H, Vuuren MJ, Kaplan M, Khushica P, Lakhi H, Louw L, Malan N, Milos K, Modiselle M, More S, Naidoo M, Scholtz L, Vangu M, Aguadé-Bruix S, Blanco I, Cabrera A, Camarero A, Casáns-Tormo I, Cuellar-Calabria H, Flotats A, Fuentes Cañamero ME, García ME, Jimenez-Heffernan A, Leta R, Diaz JL, Lumbreras L, Marquez-Cabeza JJ, Martin F, Martinez de Alegria A, Medina F, Canal MP, Peiro V, Pubul-Nuñez V, Rayo Madrid JI, Rey CR, Perez RR, Ruiz J, Hernández GS, Sevilla A, Zeidán N, Nanayakkara D, Udugama C, Simonsson M, Alkadhi H, Buechel RR, Burger P, Ceriani L, De Boeck B, Gräni C, Juillet de Saint Lager Lucas A, Kamani CH, Kawel-Boehm N, Manka R, Prior JO, Rominger A, Vallée JP, Khiewvan B, Premprabha T, Thientunyakit T, Sellem A, Kir KM, Sayman H, Sebikali MJ, Muyinda Z, Kmetyuk Y, Korol P, Mykhalchenko O, Pliatsek V, Satyr M, Albalooshi B, Ahmed Hassan MI, Anderson J, Bedi P, Biggans T, Bularga A, Bull R, Burgul R, Carpenter JP, Coles D, Cusack D, Deshpande A, Dougan J, Fairbairn T, Farrugia A, Gopalan D, Gummow A, Ramkumar PG, Hamilton M, Harbinson M, Hartley T, Hudson B, Joshi N, Kay M, Kelion A, Khokhar A, Kitt J, Lee K, Low C, Mak SM, Marousa N, Martin J, Mcalindon E, Menezes L, Morgan-Hughes G, Moss A, Murray A, Nicol E, Patel D, Peebles C, Pugliese F, Luis Rodrigues JC, Rofe C, Sabharwal N, Schofield R, Semple T, Sharma N, Strouhal P, Subedi D. Impact of COVID-19 Pandemic on Cardiovascular Testing in Asia. JACC: Asia 2021; 1:187-199. [PMID: 36338167 PMCID: PMC9627847 DOI: 10.1016/j.jacasi.2021.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/12/2021] [Accepted: 06/29/2021] [Indexed: 11/27/2022]
Abstract
Background The coronavirus disease-2019 (COVID-19) pandemic significantly affected management of cardiovascular disease around the world. The effect of the pandemic on volume of cardiovascular diagnostic procedures is not known. Objectives This study sought to evaluate the effects of the early phase of the COVID-19 pandemic on cardiovascular diagnostic procedures and safety practices in Asia. Methods The International Atomic Energy Agency conducted a worldwide survey to assess changes in cardiovascular procedure volume and safety practices caused by COVID-19. Testing volumes were reported for March 2020 and April 2020 and were compared to those from March 2019. Data from 180 centers across 33 Asian countries were grouped into 4 subregions for comparison. Results Procedure volumes decreased by 47% from March 2019 to March 2020, showing recovery from March 2020 to April 2020 in Eastern Asia, particularly in China. The majority of centers cancelled outpatient activities and increased time per study. Practice changes included implementing physical distancing and restricting visitors. Although COVID testing was not commonly performed, it was conducted in one-third of facilities in Eastern Asia. The most severe reductions in procedure volumes were observed in lower-income countries, where volumes decreased 81% from March 2019 to April 2020. Conclusions The COVID-19 pandemic in Asia caused significant reductions in cardiovascular diagnostic procedures, particularly in low-income countries. Further studies on effects of COVID-19 on cardiovascular outcomes and changes in care delivery are warranted.
Collapse
|
16
|
Cho SG, Kong EJ, Kang WJ, Paeng JC, Bom HSH, Cho I. KSNM60 in Cardiology: Regrowth After a Long Pause. Nucl Med Mol Imaging 2021; 55:151-161. [PMID: 34422125 PMCID: PMC8322215 DOI: 10.1007/s13139-021-00702-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 05/09/2021] [Accepted: 05/25/2021] [Indexed: 10/21/2022] Open
Abstract
The Korean Society of Nuclear Medicine (KSNM) is celebrating its 60th anniversary in honor of the nuclear medicine professionals who have dedicated their efforts towards research, academics, and the more comprehensive clinical applications and uses of nuclear imaging modalities. Nuclear cardiology in Korea was at its prime time in the 1990s, but its growth was interrupted by a long pause. Despite the academic and practical challenges, nuclear cardiology in Korea now meets the second leap, attributed to the growth in molecular imaging tailored for many non-coronary diseases and the genuine values of nuclear myocardial perfusion imaging. In this review, we describe the trends, achievements, challenges, and perspectives of nuclear cardiology throughout the 60-year history of the KSNM.
Collapse
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Eun Jung Kong
- Department of Nuclear Medicine, Yeungnam University Medical Center, 170 Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
| | - Won Jun Kang
- Department of Nuclear Medicine, Yonsei University Severance Hospital, Seoul, Republic of Korea
| | - Jin Chul Paeng
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hee-Seung Henry Bom
- 5Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam, Republic of Korea
| | - Ihnho Cho
- Department of Nuclear Medicine, Yeungnam University Medical Center, 170 Hyeonchung-ro, Nam-gu, Daegu, 42415 Republic of Korea
| |
Collapse
|
17
|
Nye JA, Piccinelli M, Hwang D, David Cooke C, Paeng JC, Lee JM, Cho SG, Folks R, Bom HS, Koo BK, Garcia EV. Dynamic cardiac PET motion correction using 3D normalized gradient fields in patients and phantom simulations. Med Phys 2021; 48:5072-5084. [PMID: 34174095 DOI: 10.1002/mp.15059] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 06/06/2021] [Accepted: 06/09/2021] [Indexed: 11/09/2022] Open
Abstract
This work expands on the implementation of three-dimensional (3D) normalized gradient fields to correct for whole-body motion and cardiac creep in [N-13]-ammonia patient studies and evaluates its accuracy using a dynamic phantom simulation model. METHODS A full rigid-body algorithm was developed using 3D normalized gradient fields including a multi-resolution step and sampling off the voxel grid to reduce interpolation artifacts. Optimization was performed using a weighted similarity metric that accounts for opposing gradients between images of blood pool and perfused tissue without the need for segmentation. Forty-three retrospective dynamic [N-13]-ammonia PET/CT rest/adenosine-stress patient studies were motion corrected and the mean motion parameters plotted at each frame time point. Motion correction accuracy was assessed using a comprehensive dynamic XCAT simulation incorporating published physiologic parameters of the heart's trajectory following adenosine infusion as well as corrupted attenuation correction commonly observed in clinical studies. Accuracy of the algorithm was assessed objectively by comparing the errors between isosurfaces and centers of mass of the motion corrected XCAT simulations. RESULTS In the patient studies, the overall mean cranial-to-caudal translation was 7 mm at stress over the duration of the adenosine infusion. Noninvasive clinical measures of relative flow reserve and myocardial flow reserve were highly correlated with their invasive analogues. Motion correction accuracy assessed with the XCAT simulations showed an error of <1 mm in late perfusion frames that broadened gradually to <3 mm in earlier frames containing blood pool. CONCLUSION This work demonstrates that patients undergoing [N-13]-ammonia dynamic PET/CT exhibit a large cranial-to-caudal translation related to cardiac creep primarily at stress and to a lesser extent at rest, which can be accurately corrected by optimizing their 3D normalized gradient fields. Our approach provides a solution to the challenging condition where the image intensity and its gradients are opposed without the need for segmentation and remains robust in the presence of PET-CT mismatch.
Collapse
Affiliation(s)
- Jonathon A Nye
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Marina Piccinelli
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Doyeon Hwang
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Charles David Cooke
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Jin Chul Paeng
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea
| | - Joo Myung Lee
- Samsung Medical Center, Heart Vascular Stroke Institute, Seoul, Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Russell Folks
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Bon-Kwon Koo
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Ernest V Garcia
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA
| |
Collapse
|
18
|
Moon JB, Cho SG, Yoo SW, Bom HSH. Increasing Use of Cardiac PET/CT for Inflammatory and Infiltrative Heart Diseases in Korea. Chonnam Med J 2021; 57:139-143. [PMID: 34123742 PMCID: PMC8167443 DOI: 10.4068/cmj.2021.57.2.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 11/24/2022] Open
Abstract
Recently the incidence of inflammatory and infiltrative heart diseases is increasing in Korea. Cardiac PET/CT is a useful technology evaluating inflammatory and infiltrative heart diseases. This study analyzed trends in the use of cardiac PET/CT for evaluating inflammatory and infiltrative heart diseases in the Chonnam National University Hospital and Chonnam National University Hwasun Hospital. The general trend in Korea was also assessed based on the domestic nuclear medicine database. There was a common increasing trend in the number of F-18 FDG PET/CT for the evaluation of inflammatory and infiltrative heart diseases. A representative case with cardiac sarcoidosis is illustrated.
Collapse
Affiliation(s)
- Jang Bae Moon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Hee-Seung Henry Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, Korea
| |
Collapse
|
19
|
Moon JB, Jeon S, Park KS, Yoo SW, Kang SR, Cho SG, Kim J, Lee C, Song HC, Min JJ, Bom HS, Kwon SY. Change of Therapeutic Response Classification According to Recombinant Human Thyrotropin-Stimulated Thyroglobulin Measured at Different Time Points in Papillary Thyroid Carcinoma. Nucl Med Mol Imaging 2021; 55:116-122. [PMID: 34093891 DOI: 10.1007/s13139-021-00699-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 04/05/2021] [Accepted: 04/21/2021] [Indexed: 11/26/2022] Open
Abstract
Purpose We investigated whether response classification after total thyroidectomy and radioactive iodine (RAI) therapy could be affected by serum levels of recombinant human thyrotropin (rhTSH)-stimulated thyroglobulin (Tg) measured at different time points in a follow-up of patients with papillary thyroid carcinoma (PTC). Methods A total of 147 PTC patients underwent serum Tg measurement for response assessment 6 to 24 months after the first RAI therapy. Serum Tg levels were measured at 24 h (D1Tg) and 48-72 h (D2-3Tg) after the 2nd injection of rhTSH. Responses were classified into three categories based on serum Tg corresponding to the excellent response (ER-Tg), indeterminate response (IR-Tg), and biochemical incomplete response (BIR-Tg). The distribution pattern of response classification based on serum Tg at different time points (D1Tg vs. D2-3Tg) was compared. Results Serum D2-3Tg level was higher than D1Tg level (0.339 ng/mL vs. 0.239 ng/mL, P < 0.001). The distribution of response categories was not significantly different between D1Tg-based and D2-3Tg-based classification. However, 8 of 103 (7.8%) patients and 3 of 40 (7.5%) patients initially categorized as ER-Tg and IR-Tg based on D1Tg, respectively, were reclassified to IR-Tg and BIR-Tg based on D2-3Tg, respectively. The optimal cutoff values of D1Tg for the change of response categories were 0.557 ng/mL (from ER-Tg to IR-Tg) and 6.845 ng/mL (from IR-Tg to BIR-Tg). Conclusion D1Tg measurement was sufficient to assess the therapeutic response in most patients with low level of D1Tg. Nevertheless, D2-3Tg measurement was still necessary in the patients with D1Tg higher than a certain level as response classification based on D2-3Tg could change.
Collapse
Affiliation(s)
- Jang Bae Moon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Subin Jeon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
- Department of Nuclear Medicine, Chonnam National University Medical School, Hwasun-gun, Jeollanam-do Republic of Korea
| |
Collapse
|
20
|
Yoo SW, Kim DY, Pyo A, Jeon S, Kim J, Kang SR, Cho SG, Lee C, Kim GJ, Song HC, Bom HS, Min JJ, Kwon SY. Differences in diagnostic impact of dual-tracer PET/computed tomography according to the extrahepatic metastatic site in patients with hepatocellular carcinoma. Nucl Med Commun 2021; 42:685-693. [PMID: 33625183 DOI: 10.1097/mnm.0000000000001382] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVES We compared the diagnostic performance of C-11 acetate and F-18 fluorodeoxyglucose (FDG) PET/computed tomography (CT) for the detection of extrahepatic metastasis in patients with hepatocellular carcinoma (HCC) and evaluated whether the improvement in the diagnostic performance of dual tracer PET/CT differs by the metastatic site. METHODS Fifty-eight patients who had extrahepatic metastasis on either C-11 acetate or F-18 FDG PET/CT were enrolled, and 193 metastatic lesions were analyzed in this retrospective study. The metastatic lesions were categorized based on six sites of involvement. According to each involved site, the tracer avidity of the metastatic lesions was compared using the maximum standardized uptake value (SUVmax). RESULTS Bone was the most frequent categorized metastatic site (44.8%), followed by lymph node (39.7%), lung (34.5%), soft tissue (27.6%), adrenal gland (6.9%), and vascular category (3.4%). C-11 acetate PET/CT showed a higher SUVmax than F-18 FDG PET/CT in metastatic bone lesions (P = 0.003). F-18 FDG uptake was significantly higher than C-11 acetate uptake in metastatic lymph node lesions (P < 0.001). The detection rate of dual tracer PET/CT was significantly higher in the metastatic lung (93.6%) and soft tissue (100%) lesions. However, the diagnostic performance of dual tracer PET/CT was limited in the metastatic bone and lymph node lesions because each tracer's detection rate was very high (bone: 94.6% in C-11 acetate, lymph node: 94.1% in F-18 FDG). CONCLUSIONS The tracer avidity of metastatic lesions differed according to the involved site. This difference affected the complementary role of dual tracer PET/CT in the diagnosis of extrahepatic metastases in patients with HCC.
Collapse
Affiliation(s)
- Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
| | - Dong-Yeon Kim
- College of Pharmacy and Research Institute of Pharmaceutical Science, Gyeongsang National University, Jinju
| | - Ayoung Pyo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
| | - Subin Jeon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Geun-Joong Kim
- Department of Biological Sciences and Research Center of Ecomimetics, Chonnam National University College of Natural Sciences, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Jeonnam
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeonnam
| |
Collapse
|
21
|
Cho SG, Lee SJ, Na MH, Choi YY, Bom HHS. Comparison of diagnostic accuracy of PET-derived myocardial blood flow parameters: A meta-analysis. J Nucl Cardiol 2020; 27:1955-1966. [PMID: 30390243 DOI: 10.1007/s12350-018-01476-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 09/24/2018] [Indexed: 11/25/2022]
Abstract
BACKGROUND Although absolute quantification of myocardial blood flow (MBF) by positron emission tomography provides additive diagnostic value to visual analysis of perfusion defect, diagnostic accuracy of different MBF parameters remain unclear. METHODS Clinical studies regarding the diagnostic accuracy of hyperemic MBF (hMBF), myocardial flow reserve (MFR) and/or relative flow reserve (RFR) were searched and systematically reviewed. On a per-vessel basis, pooled measures of the parameters' diagnostic performances were analyzed, regarding significant coronary stenosis defined by fractional flow reserve or diameter stenosis. RESULTS Ten studies (2,522 arteries from 1,099 patients) were finally included. Pooled sensitivity [95% confidence interval (CI)] was 0.853 (0.821-0.881) for hMBF, 0.755 (0.713-0.794) for MFR, and 0.636 (0.539-0.726) for RFR. Pooled specificity (95% CI) was 0.844 (0.827-0.860) for hMBF, 0.804 (0.784-0.824) for MFR, and 0.897 (0.860-0.926) for RFR. Pooled area under the curve ± standard error was 0.900 ± 0.020 for hMBF, 0.830 ± 0.026 for MFR, and 0.873 ± 0.048 for RFR. CONCLUSIONS hMBF showed the best sensitivity while RFR showed the best specificity in the diagnosis of significant coronary stenosis. MFR was less sensitive than hMBF and less specific than hMBF and RFR.
Collapse
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea.
| | - Soo Jin Lee
- Department of Nuclear Medicine, Hanyang University Medical Center, 222-1, Wangsimni-ro Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Myung Hwan Na
- Department of Statistics, Chonnam National University, 45, Yongbong-ro, Buk-gu, Kwangju, 61186, Republic of Korea
| | - Yun Young Choi
- Department of Nuclear Medicine, Hanyang University Medical Center, 222-1, Wangsimni-ro Seongdong-gu, Seoul, 04763, Republic of Korea.
| | - Henry Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322, Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea.
| |
Collapse
|
22
|
Kim J, Cho SG, Kang SR, Yoo SW, Kwon SY, Min JJ, Bom HS, Song HC. Association between FDG uptake in the right ventricular myocardium and cancer therapy-induced cardiotoxicity. J Nucl Cardiol 2020; 27:2154-2163. [PMID: 30719656 DOI: 10.1007/s12350-019-01617-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 11/30/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND The aim of this study was to investigate changes in myocardial uptake evaluated by oncologic 18F-fluorodeoxyglucose (FDG) PET/CT scans and to determine the relationship between myocardial FDG uptake and cancer therapy-induced cardiotoxicity in breast cancer patients who underwent anthracycline or trastuzumab. METHODS We reviewed 121 consecutive patients who underwent oncologic FDG PET/CT and echocardiography at baseline and post-therapy with anthracyclines or trastuzumab for breast cancer. Grade in LV wall, uptake pattern in LV wall, and the presence of RV wall uptake were assessed by visual analysis, and the mean SUV in the LV and RV walls and the change of SUV (ΔSUV) between baseline and post-therapy PET/CT were measured by quantitative analysis. Multiple logistic regression analyses were performed to evaluate the association between PET parameters and cardiotoxicity. RESULTS Fifteen patients (12%) showed cardiotoxicity after therapy. The cardiotoxic group tended to show more diffuse LV uptake, higher SUV, and ΔSUV of RV wall than the non-cardiotoxic group following therapy with anthracyclines or trastuzumab. Logistic regression analysis showed that the presence of RV wall uptake, SUV of RV wall (> 1.8), and ΔSUV of RV wall (> 0.4) were significantly associated with cardiotoxicity after controlling for age, radiotherapy, and treatment. CONCLUSIONS The presence of RV wall uptake and the increase of SUV of RV wall on post-therapy PET/CT were associated with cardiotoxicity in breast cancer patients who underwent anthracycline or trastuzumab. Oncologic FDG PET/CT scans can provide information regarding cancer therapy-induced cardiotoxicity as well as tumor response.
Collapse
Affiliation(s)
- Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea.
- Department of Nuclear Medicine, Chonnam National University Hospital and Medical School, Jebongro 42, Donggu, Gwangju, 61469, Republic of Korea.
| |
Collapse
|
23
|
Piccinelli M, Cho SG, Garcia EV, Alexanderson E, Lee JM, Cooke CD, Goyal N, Sanchez MS, Folks RD, Chen Z, Votaw J, Koo BK, Bom HS. Vessel-specific quantification of absolute myocardial blood flow, myocardial flow reserve and relative flow reserve by means of fused dynamic 13NH 3 PET and CCTA: Ranges in a low-risk population and abnormality criteria. J Nucl Cardiol 2020; 27:1756-1769. [PMID: 30374847 PMCID: PMC6488439 DOI: 10.1007/s12350-018-01472-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 09/15/2018] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The goal of the present work is to present a novel methodology for the extraction of MBF, MFR and RFR along coronary arteries by means of multimodality image fusion of dynamic PET and CCTA images. BACKGROUND FFR is the reference standard to identify flow-limiting lesions, but its invasiveness limits broad application. New noninvasive methodologies are warranted to stratify patients and guide treatment. METHODS A group of 16 low-risk CAD subjects who underwent both 13NH3 PET and CCTA were analyzed. Image fusion techniques were employed to align the studies and CCTA-derived anatomy used to identify coronaries trajectories. MBF was calculated by means of a 1-tissue compartmental model for the standard vascular territories and along patient-specific vessel paths from the base to the apex of the heart. RESULTS Low-risk ranges for MBF. MFR and RFR for LAD, LCX and rPDA were computed for the entire cohort and separated by gender. Computed low-risk ranges were used to assess a prospective patient with suspected CAD. CONCLUSIONS Our vessel-specific functional indexes and 3D displays offer promise to more closely replicate what is commonly performed during a catheterization session and have the potential of providing effective noninvasive tools for the identification of flow-limiting lesions and image-guided therapy.
Collapse
Affiliation(s)
- Marina Piccinelli
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, NE, Atlanta, GA, 3032, USA.
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University, Gwangju, Korea
| | - Ernest V Garcia
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, NE, Atlanta, GA, 3032, USA
| | - Erick Alexanderson
- Nuclear Cardiology Department, Instituto Nacional de Cardiologia, Mexico City, Mexico
| | - Joo Myung Lee
- Heart Vascular Stroke Institute, Samsung Medical Center, Seoul, Korea
| | - C David Cooke
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, NE, Atlanta, GA, 3032, USA
| | - Nikhil Goyal
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, NE, Atlanta, GA, 3032, USA
| | | | - Russel D Folks
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, NE, Atlanta, GA, 3032, USA
| | - Zhengjia Chen
- Department of Biostatistics & Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, USA
| | - John Votaw
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, 1364 Clifton Rd, NE, Atlanta, GA, 3032, USA
| | - Bon-Kwon Koo
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University, Gwangju, Korea
| |
Collapse
|
24
|
Yoo SW, Chowdhury MSA, Jeon S, Kang SR, Lee C, Jabin Z, Kim J, Cho SG, Song HC, Bom HS, Min JJ, Kwon SY. Clinical Impact of F-18 FDG PET-CT on Biopsy Site Selection in Patients with Suspected Bone Metastasis of Unknown Primary Site. Nucl Med Mol Imaging 2020; 54:192-198. [PMID: 32831965 DOI: 10.1007/s13139-020-00649-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 06/10/2020] [Accepted: 06/26/2020] [Indexed: 12/01/2022] Open
Abstract
Purpose We investigated the clinical role of F-18 fluorodeoxyglucose (FDG) positron emission tomography-computed tomography (PET-CT) in the identification of the primary site and the selection of the optimal biopsy site in patients with suspected bone metastasis of unknown primary site. Methods The patients with suspected bone metastasis who underwent PET-CT for evaluation of primary site were enrolled in this study. The primary sites were identified by the histopathologic or imaging studies and were classified according to the FDG uptake positivity of the primary site. To evaluate the guiding capability of PET-CT in biopsy site selection, we statistically analyzed whether the biopsy site could be affected according to the presence of extra-skeletal FDG uptake. Results Among 74 enrolled patients, 51 patients had a metastatic bone disease. The primary site was identified in 48 of 51 patients (94.1%). Forty-six patients were eligible to test the association of clinical choice of biopsy site with PET positivity of extra-skeletal lesion. The extra-skeletal biopsies were done in 42 out of 43 patients with positive extra-skeletal uptake lesions. Bone biopsies were inevitably performed in the other three patients without extra-skeletal uptake lesions. The association came out to be significant (Fisher's exact test, P < 0.001). Conclusion F-18 FDG PET-CT significantly contributed not only to identify the primary site but also to suggest optimal biopsy sites in patients with suspected bone metastasis.
Collapse
Affiliation(s)
- Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea
| | - Md Sunny Anam Chowdhury
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Institute of Nuclear Medicine and Allied Sciences, Bangladesh Atomic Energy Commission, Bogra, Bangladesh
| | - Subin Jeon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea
| | - Zeenat Jabin
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,National Institute of Nuclear Medicine and Allied Sciences, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do, 58128 Republic of Korea.,Department of Nuclear Medicine, Chonnam National University Medical School, Jeollanam-do, Republic of Korea
| |
Collapse
|
25
|
Kang KW, Kim JS, Cho SG, Kim J, Song HC. Acquisition of dynamic N-13 ammonia PET for myocardial blood flow quantification. J Nucl Cardiol 2020; 27:1288-1292. [PMID: 32076961 DOI: 10.1007/s12350-020-02062-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 01/28/2020] [Indexed: 10/25/2022]
Affiliation(s)
- Kyeong Won Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Korea
| | - Jong Sang Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Korea.
| |
Collapse
|
26
|
AlBadri A, Piccinelli M, Cho SG, Lee JM, Jaber W, De Cecco CN, Samady H, Koo BK, Bom HS, Garcia EV. Rationale and design of the quantification of myocardial blood flow using dynamic PET/CTA-fused imagery (DEMYSTIFY) to determine physiological significance of specific coronary lesions. J Nucl Cardiol 2020; 27:1030-1039. [PMID: 32026327 PMCID: PMC7332386 DOI: 10.1007/s12350-020-02052-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 01/13/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Coronary physiology assessments have been shown by multiple trials to add clinical value in detecting significant coronary artery disease and predicting cardiovascular outcomes. Fractional flow reserve (FFR) obtained during invasive coronary angiography (ICA) has become the new reference standard for hemodynamic significance detection. Absolute myocardial blood flow (MBF) quantification by means of dynamic positron emission tomography (dPET) has high diagnostic and prognostic values. FFR is an invasive measure and as such cannot be applied broadly, while MBF quantification is commonly performed on standard vascular territories intermixing normal flow from normal regions with abnormal flow from abnormal regions and consequently limiting its diagnostic power. OBJECTIVE The aim of this study is to provide physicians with reliable software tools for the non-invasive assessment of lesion-specific physiological significance for the entire coronary tree by combining PET-derived absolute flow data and coronary computed tomography angiography (CTA)-derived anatomy and coronary centerlines. METHODS The dynamic PET/CTA myocardial blood flow assessment with fused imagery (DEMYSTIFY) study is an observational prospective clinical study to develop algorithms and software tools to fuse coronary anatomy data obtained from CTA with dPET data to non-invasively measure absolute MBF, myocardial flow reserve, and relative flow reserve across specific coronary lesions. Patients (N = 108) will be collected from 4 institutions (Emory University Hospital, USA; Chonnam National University Hospital, South Korea; Samsung Medical Center, South Korea; Seoul National University Hospital, South Korea). These results will be compared to those obtained invasively in the catheterization laboratory and to a relatively novel non-invasive technique to estimate FFR based on CTA and computational fluid dynamics. CONCLUSIONS Success of these developments should lead to the following benefits: (1) eliminate unnecessary invasive coronary angiography in patients with no significant lesions, (2) avoid stenting physiologically insignificant lesions, (3) guide percutaneous coronary interventions process to the location of significant lesions, (4) provide a flow-color-coded 3D roadmap of the entire coronary tree to guide bypass surgery, and (5) use less radiation and lower the cost from unnecessary procedures. TRIAL REGISTRY The DEMYSTIFY study has been registered on ClinicalTrials.gov with registration number NCT04221594.
Collapse
Affiliation(s)
- Ahmed AlBadri
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Marina Piccinelli
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University, Gwangju, Korea
| | - Joo Myung Lee
- Samsung Medical Center, Heart Vascular Stroke Institute, Seoul, Korea
| | - Wissam Jaber
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Carlo N De Cecco
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA, USA
| | - Habib Samady
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Bon-Kwon Koo
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University, Gwangju, Korea
| | - Ernest V Garcia
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, GA, USA.
| |
Collapse
|
27
|
Kasama S, Cho SG. Can Visceral Adiposity Predict Paradoxical Prognostic Implications on Lethal Arrhythmic Events in Chronic Heart Failure Patients with Impaired Cardiac Sympathetic Activity? Ann Nucl Cardiol 2020; 6:46-48. [PMID: 37123483 PMCID: PMC10133932 DOI: 10.17996/anc.20-00126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 06/17/2020] [Indexed: 05/02/2023]
Affiliation(s)
- Shu Kasama
- Institute for Clinical and Translational Science, Nara Medical University Hospital, Japan
- Reprint requests and correspondence: Shu Kasama, MD, Institute for Clinical and Translational Science, Nara Medical University Hospital, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan / E-mail:
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Republic of Korea
| |
Collapse
|
28
|
Kim Y, Bae S, Cho SG, Shiono Y, Hyun DY, Cho KH, Kim MC, Sim DS, Hong YJ, Kim JH, Ahn Y, Jeong MH. Invasive physiological assessment of myocardial bridge via the left snuffbox approach. Kardiol Pol 2019; 77:892-893. [DOI: 10.33963/kp.14916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
29
|
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Zeenat Jabin
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322, Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea
| | - Changho Lee
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322, Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea
| | - Henry Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322, Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea.
| |
Collapse
|
30
|
Cho SG, Kwon SY, Kim J, Cho DH, Na MH, Kang SR, Yoo SW, Song HC. Risk factors of malignant fluorodeoxyglucose-avid lymph node on preablation positron emission tomography in patients with papillary thyroid cancer undergoing radioiodine ablation therapy. Medicine (Baltimore) 2019; 98:e14858. [PMID: 31008921 PMCID: PMC6494284 DOI: 10.1097/md.0000000000014858] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
F-18 fluorodeoxyglucose (FDG)-avid metastatic lesions are associated with a poor response to radioiodine ablation therapy (RIT) in papillary thyroid cancer (PTC). This study evaluated the significance of preablative FDG positron emission tomography (PET) for the assessment of risk factors and frequency of malignant FDG-avid lymph nodes in patients with PTC undergoing RIT.The study included 339 consecutive patients (mean age 46.3 ± 12.5 y; 260 females) with PTC referred for the first RIT and who underwent routine preablative FDG PET between April 2011 and February 2013. FDG-avid lymph nodes (FALNs) were identified using retrospective image reviews. The frequency of malignant FALN (mFALN), its contribution to persistent or recurrent PTC, and its risk factors were analyzed.Among the patients, 112 had FALNs (33.0%): 11 mFALNs (3.2%) and 101 benign FALNs (bFALNs, 29.8%). mFALN contributed to 55% of persistent or recurrent PTC after RIT, which was observed in 20 of 339 patients (5.9%) during the post-RIT follow-up. Among preoperative risk factors, suspicious extrathyroidal extension and lateral neck lymph node metastasis on imaging studies were associated with mFALN. Among postoperative risk factors, T3/T4 and N1b stages, higher stimulated thyroglobulin, and higher numbers of metastatic lymph nodes and dissected lymph nodes, were associated with mFALN.mFALNs were observed in a small number of patients with PTC undergoing RIT, but it contributed 55% of total recurrent or persistent disease. Increased frequency of mFALNs is associated with more advanced PTC. Preablative FDG PET has value in evaluation of patients with RIT-resistant lesions and may help determine further treatment strategies.
Collapse
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital
| | - Dong-Hyeok Cho
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chonnam National University Hospital
| | - Myung Hwan Na
- Department of Statistics, Chonnam National University, Kwangju, South Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital
| |
Collapse
|
31
|
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea.
| | - Zeenat Jabin
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322, Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea
| | - Henry Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322, Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea
| |
Collapse
|
32
|
Song HC, Na MH, Kim J, Cho SG, Park JK, Kang KW. Diagnostic Reference Levels for Adult Nuclear Medicine Imaging Established from the National Survey in Korea. Nucl Med Mol Imaging 2019; 53:64-70. [PMID: 30828403 DOI: 10.1007/s13139-019-00585-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 11/29/2022] Open
Abstract
Purpose There is substantial need for optimizing radiation protection in nuclear medicine imaging studies. However, the diagnostic reference levels (DRLs) have not yet been established for nuclear medicine imaging studies in Korea. Materials and Methods The data of administered activity in 32 nuclear medicine imaging studies were collected from the Korean Society of Nuclear Medicine (KSNM) dose survey database from 2013 and 2014. Through the expert discussions and statistical analyses, the 75th quartile value (Q3) was suggested as the preliminary DRL values. Preliminary DRLs were subjected to approval process by the KSNM Board of Directors and KSNM Council, followed by clinical applications and performance rating by domestic institutes. Results DRLs were determined through 32 nuclear medicine imaging studies. The Q3 value was considered as appropriate selection as it was generally consistent with the most commonly administered activity. In the present study, the final version of initial DRL values for nuclear medicine imaging in Korean adults is described including various protocols of the brain and myocardial perfusion imaging. Conclusion The first DRLs for nuclear medicine imaging in Korean adults were confirmed. The DRLs will enable optimized radiation protection in the field of nuclear medicine imaging in Korea.
Collapse
Affiliation(s)
- Ho-Chun Song
- 1Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 501-757 South Korea.,Medical Radiation Safety Research Center, Gwangju, South Korea
| | - Myung Hwan Na
- Medical Radiation Safety Research Center, Gwangju, South Korea.,3Department of Statistics, Chonnam National University, Gwangju, South Korea
| | - Jahae Kim
- 1Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 501-757 South Korea.,Medical Radiation Safety Research Center, Gwangju, South Korea
| | - Sang-Geon Cho
- 1Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 501-757 South Korea.,Medical Radiation Safety Research Center, Gwangju, South Korea
| | - Jin Kyung Park
- Medical Radiation Safety Research Center, Gwangju, South Korea.,3Department of Statistics, Chonnam National University, Gwangju, South Korea
| | - Keon-Wook Kang
- 4Department of Nuclear Medicine and Cancer Research Institute, Seoul National University College of Medicine, Seoul, South Korea
| | | |
Collapse
|
33
|
Kim J, Choi KH, Cho SG, Kang SR, Yoo SW, Kwon SY, Min JJ, Bom HS, Song HC. Association of muscle and visceral adipose tissues with the probability of Alzheimer's disease in healthy subjects. Sci Rep 2019; 9:949. [PMID: 30700801 PMCID: PMC6353958 DOI: 10.1038/s41598-018-37244-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 12/05/2018] [Indexed: 01/11/2023] Open
Abstract
Increasing evidence indicates that sarcopenia and obesity can be risk factors for incident dementia. We investigated the association of body composition including muscle and visceral adipose tissue (VAT) with the probability of Alzheimer’s disease (AD) in healthy middle-aged and elderly subjects using 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT). This study included 110 healthy subjects with available whole-body FDG PET/CT scans and medical records. Muscle and VAT tissues were measured on the abdominal CT slice, and the PMOD Alzheimer’s discrimination FDG PET analysis tool (PALZ) score was evaluated on the brain PET of the same subject using software PALZ. Skeletal muscle index (r: −0.306; P = 0.031) was significantly negatively associated with the PALZ score in the elderly patients. Muscle area (β: −0.640; P = 0.043) and skeletal muscle index (β: −0.557; P = 0.043) were independently associated with the PALZ score in elderly subjects after adjustments for sex, duration of education, hypertension, diabetes mellitus, and smoking and drinking status. Increased muscle tissue was associated with a lower probability of AD in elderly subjects, but VAT was not associated with a lower probability of AD in middle-or older-aged adults.
Collapse
Affiliation(s)
- Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Kang-Ho Choi
- Department of Neurology, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Su Woong Yoo
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Jebongro 42, Donggu, Gwangju, Republic of Korea.
| |
Collapse
|
34
|
Kim DY, Cho SG, Bom HS. Emerging Tracers for Nuclear Cardiac PET Imaging. Nucl Med Mol Imaging 2018; 52:266-278. [PMID: 30100939 PMCID: PMC6066491 DOI: 10.1007/s13139-018-0521-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/05/2018] [Accepted: 04/12/2018] [Indexed: 12/16/2022] Open
Abstract
Myocardial perfusion imaging using positron emission tomography (PET) has several advantages over single photon emission computed tomography (SPECT). The recent advances in SPECT technology have shown promise, but there is still a large need for PET in the clinical management of coronary artery disease (CAD). Especially, absolute quantification of myocardial blood flow (MBF) using PET is extremely important. In spite of considerable advances in the diagnosis of CAD, novel PET radiopharmaceuticals remain necessary for the diagnosis of CAD because clinical use of current cardiac radiotracers is limited by their physical characteristics, such as decay mode, emission energy, and half-life. Thus, the use of a radioisotope that has proper characteristics and a proper half-life to develop myocardial perfusion agents could overcome these limitations. In this review, the current state of cardiac PET and a general overview of novel 18F or 68Ga-labeled radiotracers, including their radiosynthesis, in vivo characterization, and evaluation, are provided. The future perspectives are discussed in terms of their potential usefulness based on new image analysis methods and hybrid imaging.
Collapse
Affiliation(s)
- Dong-Yeon Kim
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 Republic of Korea
| |
Collapse
|
35
|
Song M, Jeon S, Kang SR, Jabin Z, Yoo SW, Min JJ, Bom HS, Cho SG, Kim J, Song HC, Kwon SY. Response Prediction of Altered Thyroglobulin Levels After Radioactive Iodine Therapy Aided by Recombinant Human Thyrotropin in Patients with Differentiated Thyroid Cancer. Nucl Med Mol Imaging 2018; 52:287-292. [PMID: 30100941 DOI: 10.1007/s13139-018-0528-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/16/2018] [Accepted: 05/23/2018] [Indexed: 11/26/2022] Open
Abstract
Purpose Thyroglobulin (Tg) may be released from damaged residual thyroid tissues after radioactive iodine (RAI) therapy in patients with differentiated thyroid carcinoma (DTC). We investigated whether altered levels of serum Tg after recombinant human thyrotropin (rhTSH)-aided RAI therapy could be a prognostic marker in patients with DTC. Methods We evaluated 68 patients who underwent RAI therapy after total thyroidectomy. Serum Tg levels were measured just before RAI administration (D0Tg) and 7 days after RAI therapy (D7Tg). Patients with a D0Tg level greater than 2.0 ng/mL were excluded to more precisely evaluate the injury effect of RAI in small remnant tissues. The ratioTg was defined as the D7Tg level divided by that on D0Tg. The therapeutic responses were classified as acceptable or non-acceptable. Finally, we investigated which clinicopathologic parameters were associated with therapeutic response. Results At the follow-up examination, an acceptable response was observed in 50 patients (73.5%). Univariate analysis revealed significant differences in N stage (P = 0.003) and ratioTg (acceptable vs. non-acceptable responses, 21.9 ± 33.6 vs. 3.8 ± 6.5; P = 0.006). In multivariate analysis, only ratioTg significantly predicted an acceptable response (odds ratio 1.104; 95% confidence interval 1.005-1.213; P = 0.040). A ratioTg above 3.5 predicted an acceptable response with a sensitivity of 66.0%, specificity of 83.3%, and accuracy of 70.6% (area under the curve = 0.718; P = 0.006). Conclusions Altered levels of serum Tg after RAI therapy, calculated as the ratioTg (D7Tg/D0Tg), significantly predicted an acceptable response in patients with DTC.
Collapse
Affiliation(s)
- Minchul Song
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Subin Jeon
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Sae-Ryung Kang
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Zeenat Jabin
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Su Woong Yoo
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Jung-Joon Min
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Hee-Seung Bom
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| | - Sang-Geon Cho
- 2Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Jahae Kim
- 2Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Ho-Chun Song
- 2Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Seong Young Kwon
- 1Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeollanam-do 58128 South Korea
| |
Collapse
|
36
|
Jung TY, Kim IY, Lim SH, Park KS, Kim DY, Jung S, Moon KS, Jang WY, Kang SR, Cho SG, Min JJ, Bom HS, Kwon SY. Optimization of diagnostic performance for differentiation of recurrence from radiation necrosis in patients with metastatic brain tumors using tumor volume-corrected 11C-methionine uptake. EJNMMI Res 2017; 7:45. [PMID: 28536967 PMCID: PMC5442037 DOI: 10.1186/s13550-017-0293-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 05/15/2017] [Indexed: 02/04/2023] Open
Abstract
Background Tumor to normal tissue ratio (T/N ratio) on 11C-methionine (11C-MET) positron emission tomography/computed tomography (PET/CT) is affected by variable factors. We investigated whether T/N ratio cutoff values corrected according to metabolic tumor volume (MTV) could improve the diagnostic performance of 11C-MET PET/CT for diagnosis of recurrence in patients with metastatic brain tumor. Forty-eight patients with metastatic brain tumors underwent 11C-MET PET/CT for differential diagnosis between recurrence and radiation necrosis after gamma knife radiosurgery (GKR). Both T/N ratio and MTV were estimated in each lesion on 11C-MET PET/CT. The lesions were classified into three groups based on MTV criteria (≤ 0.5 cm3; > 0.5, ≤ 4.0 cm3; and > 4.0 cm3). The optimal cutoff values of the T/N ratio from receiver operating characteristic (ROC) curve were determined in each group (MTV-corrected) as well as total lesions (non-corrected). Finally, diagnostic performance of 11C-MET PET/CT was compared with the MTV-corrected cutoff values. Results Among 77 lesions, 51 were diagnosed with recurrence. The mean T/N ratio was 2.25 (± 1.12) for recurrent lesions and 1.44 (± 0.22) for radiation necrosis (P < 0.001). T/N ratio of 1.61 (non-corrected) provided the best sensitivity, specificity, and diagnostic accuracy (70.6, 80.8, and 74.0%, respectively). Using the MTV criteria, optimal cutoff values of the T/N ratios in each group were 1.23 (MTV ≤ 0.5 cm3), 1.54 (0.5 cm3 < MTV ≤ 4.0 cm3), and 1.85 (MTV > 4.0 cm3). In small-sized lesions (MTV ≤ 0.5 cm3), MTV-corrected cutoff values (1.23) could maintain favorable diagnostic performance with sensitivity, specificity, and diagnostic accuracy (70.0, 80.0, and 73.3%, respectively), compared to non-corrected cutoff values. Conclusions MTV-corrected cutoff values of T/N ratio could maintain the diagnostic performance of 11C-MET PET/CT in small sized, metastatic brain tumors. We expect our results to contribute to reproducible and standardized interpretation of 11C-MET PET/CT.
Collapse
Affiliation(s)
- Tae-Young Jung
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - In-Young Kim
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Sa-Hoe Lim
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Dong-Yeon Kim
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Shin Jung
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Kyung-Sub Moon
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Woo-Youl Jang
- Department of Neurosurgery, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-eup, Hwasun-gun, Jeonnam, 58128, Republic of Korea.
| |
Collapse
|
37
|
Cho SG, Kim J, Song HC. Radiation Safety in Nuclear Medicine Procedures. Nucl Med Mol Imaging 2017; 51:11-16. [PMID: 28250853 PMCID: PMC5313457 DOI: 10.1007/s13139-016-0406-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 02/01/2016] [Accepted: 02/05/2016] [Indexed: 10/22/2022] Open
Abstract
Since the nuclear disaster at the Fukushima Daiichi Nuclear Power Plant in 2011, radiation safety has become an important issue in nuclear medicine. Many structured guidelines or recommendations of various academic societies or international campaigns demonstrate important issues of radiation safety in nuclear medicine procedures. There are ongoing efforts to fulfill the basic principles of radiation protection in daily nuclear medicine practice. This article reviews important principles of radiation protection in nuclear medicine procedures. Useful references, important issues, future perspectives of the optimization of nuclear medicine procedures, and diagnostic reference level are also discussed.
Collapse
Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Medical Radiation Safety Research Center, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, 501-757 Gwang-ju, Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Medical Radiation Safety Research Center, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, 501-757 Gwang-ju, Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Medical Radiation Safety Research Center, Chonnam National University Hospital, 42 Jebong-ro, Dong-gu, 501-757 Gwang-ju, Korea
| |
Collapse
|
38
|
Kim J, Cho SG, Kang SR, Kwon SY, Cho DH, Cho JS, Song HC. Preparation for radioactive iodine therapy is not a risk factor for the development of hyponatremia in thyroid cancer patients. Medicine (Baltimore) 2017; 96:e6004. [PMID: 28151897 PMCID: PMC5293460 DOI: 10.1097/md.0000000000006004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The aim of this study was to evaluate whether the preparation for radioactive iodine (RAI) therapy by thyroid hormone withdrawal (THW) or a low-iodine diet (LID) can be risk factors for the development of hyponatremia in patients with differentiated thyroid cancer after thyroidectomy.We retrospectively reviewed the medical records and laboratory findings of 326 patients who underwent preparation for RAI therapy after thyroidectomy from 2012 to 2014. Demographic and clinical variables including the method of thyrotropin stimulation and duration of LID were assessed. Serum sodium was measured twice, before operation and before RAI therapy.Hyponatremia was detected in only 3 patients (0.9%) before operation, but in 15 patients (4.6%) before RAI therapy. None of the patients had severe hyponatremia after preparation for RAI therapy. Pre-RAI therapy serum sodium was correlated with the method of thyrotropin stimulation (TWH vs recombinant human thyroid stimulating hormone, P = 0.014) and duration of LID (r = -0.131, P = 0.018); however, the preparation of RAI therapy, THW and LID, did not affect the development of hyponatremia in logistic regression analysis. Preoperative serum sodium was a significant risk factor for hyponatremia during preparation for RAI therapy.Preparation for RAI therapy by THW or LID is not a risk factor for the development of hyponatremia in patients with thyroid cancer. The development of hyponatremia was neither frequent nor severe during preparation for RAI therapy. Physicians should not be greatly concerned about rare life-threatening hyponatremia during preparation for RAI therapy.
Collapse
Affiliation(s)
- Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital
| | - Dong-Hyeok Cho
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chonnam National University Hospital
| | - Jin-Seong Cho
- Department of Surgery, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital
| |
Collapse
|
39
|
Kim J, Cho SG, Song M, Kang SR, Kwon SY, Choi KH, Choi SM, Kim BC, Song HC. Usefulness of 3-dimensional stereotactic surface projection FDG PET images for the diagnosis of dementia. Medicine (Baltimore) 2016; 95:e5622. [PMID: 27930593 PMCID: PMC5266065 DOI: 10.1097/md.0000000000005622] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
To compare diagnostic performance and confidence of a standard visual reading and combined 3-dimensional stereotactic surface projection (3D-SSP) results to discriminate between Alzheimer disease (AD)/mild cognitive impairment (MCI), dementia with Lewy bodies (DLB), and frontotemporal dementia (FTD).[F]fluorodeoxyglucose (FDG) PET brain images were obtained from 120 patients (64 AD/MCI, 38 DLB, and 18 FTD) who were clinically confirmed over 2 years follow-up. Three nuclear medicine physicians performed the diagnosis and rated diagnostic confidence twice; once by standard visual methods, and once by adding of 3D-SSP. Diagnostic performance and confidence were compared between the 2 methods.3D-SSP showed higher sensitivity, specificity, accuracy, positive, and negative predictive values to discriminate different types of dementia compared with the visual method alone, except for AD/MCI specificity and FTD sensitivity. Correction of misdiagnosis after adding 3D-SSP images was greatest for AD/MCI (56%), followed by DLB (13%) and FTD (11%). Diagnostic confidence also increased in DLB (visual: 3.2; 3D-SSP: 4.1; P < 0.001), followed by AD/MCI (visual: 3.1; 3D-SSP: 3.8; P = 0.002) and FTD (visual: 3.5; 3D-SSP: 4.2; P = 0.022). Overall, 154/360 (43%) cases had a corrected misdiagnosis or improved diagnostic confidence for the correct diagnosis.The addition of 3D-SSP images to visual analysis helped to discriminate different types of dementia in FDG PET scans, by correcting misdiagnoses and enhancing diagnostic confidence in the correct diagnosis. Improvement of diagnostic accuracy and confidence by 3D-SSP images might help to determine the cause of dementia and appropriate treatment.
Collapse
Affiliation(s)
| | | | | | | | | | - Kang-Ho Choi
- Department of Neurology, Chonnam National University Hospital, Donggu, Gwangju, Republic of Korea
| | - Seong-Min Choi
- Department of Neurology, Chonnam National University Hospital, Donggu, Gwangju, Republic of Korea
| | - Byeong-Chae Kim
- Department of Neurology, Chonnam National University Hospital, Donggu, Gwangju, Republic of Korea
| | | |
Collapse
|
40
|
Cho SG, Park KS, Kim J, Kang SR, Song HC, Kim JH, Cho JY, Hong YJ, Jabin Z, Park HJ, Jeong GC, Kwon SY, Paeng JC, Kim HS, Min JJ, Garcia EV, Bom HHS. Coronary flow reserve and relative flow reserve measured by N-13 ammonia PET for characterization of coronary artery disease. Ann Nucl Med 2016; 31:144-152. [DOI: 10.1007/s12149-016-1138-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Accepted: 11/07/2016] [Indexed: 11/28/2022]
|
41
|
Park HJ, Kwon SY, Cho SG, Kim J, Song HC, Kim SS, Yoon YH, Park JG. Giant Cell Tumor with Secondary Aneurysmal Bone Cyst Shows Heterogeneous Metabolic Pattern on 18F-FDG PET/CT: A Case Report. Nucl Med Mol Imaging 2016; 50:348-352. [PMID: 27994691 DOI: 10.1007/s13139-016-0423-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 04/24/2016] [Accepted: 05/19/2016] [Indexed: 11/24/2022] Open
Abstract
Giant cell tumor (GCT) is a generally benign bone tumor accounting for approximately 5 % of all primary bone neoplasms. Cystic components in GCTs that indicate secondary aneurysmal bone cysts (ABCs) are reported in 14 % of GCTs. Although both of them have been described separately in previous reports that may show considerable fluorodeoxyglucose (FDG) uptake despite their benign nature, the findings of GCT with secondary ABC on 18F-FDG positron emission tomography/computed tomography (PET/CT) have not been well-known. We report a case of GCT with secondary ABC in a 26-year-old woman. 18F-FDG PET/CT revealed a heterogeneous hypermetabolic lesion in the left proximal femur with the maximum standardized uptake value of 4.7. The solid components of the tumor showed higher FDG uptake than the cystic components. These observations suggest that the ABC components in GCTs show heterogeneous metabolic patterns on 18F-FDG PET/CT.
Collapse
Affiliation(s)
- Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Huasun-Gun, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Huasun-Gun, Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Sung Sun Kim
- Department of Pathology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Yeon Hong Yoon
- Department of Radiology, Chonnam National University Hwasun Hospital, Huasun-Gun, Republic of Korea
| | - Jin Gyoon Park
- Department of Radiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| |
Collapse
|
42
|
Choe YM, Park KM, Jeon YS, Cho SG, Hong KC, Shin WY, Song JH. Abscess of Native Kidney Caused by Carbapenem-Resistant Acinetobacter baumannii (CRAB) in Renal Transplantation: A Case Report. Transplant Proc 2016; 48:949-50. [PMID: 27234776 DOI: 10.1016/j.transproceed.2015.09.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 09/03/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND Abscess of native kidney is a rare postoperative event after renal transplantation. This report describes a case of back pain, fever and pyuria caused by carbapenem-resistant Acinetobacter baumannii (CRAB) in a patient who underwent renal-transplantation. CASE REPORT A 40-year-old man, presenting with hypertension and renal failure, underwent renal transplantation 1 month previously. He developed sudden intense back pain and fever (39°C). There was normal blood flow in graft kidney but there were the swelling and cyst of right native kidney. We aspirated the pus in native kidney and performed the native nephrectomy. The carbapenem-resistant Acinetobacter baumannii (CRAB) was isolated as in pus and native kidney. We performed the tigecyline monotherapy during 3 weeks. He recovered without complication after treatment. CONCLUSIONS To our knowledge, no report in the literature to date describes abscess in native kidney secondary to CRAB in a renal transplant. Infections caused by CRAB have become critical for immunosuppressed patients. The presence of complication greater risk, by an organism whose pathogenicity and virulence are not yet elucidated should determine an aggressive empirical antimicrobial therapy.
Collapse
Affiliation(s)
- Y-M Choe
- Department of Surgery, Inha University Hospital, Incheon, Korea
| | - K-M Park
- Department of Surgery, Inha University Hospital, Incheon, Korea.
| | - Y S Jeon
- Department of Radiology, Inha University Hospital, Incheon, Korea
| | - S G Cho
- Department of Radiology, Inha University Hospital, Incheon, Korea
| | - K C Hong
- Department of Surgery, Inha University Hospital, Incheon, Korea
| | - W Y Shin
- Department of Surgery, Inha University Hospital, Incheon, Korea
| | - J H Song
- Department of Nephrology, Inha University Hospital, Incheon, Korea
| |
Collapse
|
43
|
Jeong GC, Song M, Park HJ, Min JJ, Bom HS, Cho SG, Park KS, Kang SR, Kim J, Song HC, Kwon SY. Iodine Uptake Patterns on Post-ablation Whole Body Scans are Related to Elevated Serum Thyroglobulin Levels After Radioactive Iodine Therapy in Patients with Papillary Thyroid Carcinoma. Nucl Med Mol Imaging 2016; 50:329-336. [PMID: 27994688 DOI: 10.1007/s13139-016-0421-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/27/2016] [Accepted: 05/03/2016] [Indexed: 11/25/2022] Open
Abstract
PURPOSE Serum thyroglobulin (Tg) level is frequently elevated shortly after radioactive iodine (RAI) ablation therapy. The authors studied the relationship between the elevation of serum Tg after RAI therapy and iodine uptake pattern on post-ablation whole body scans (RxWBSs) in patients with papillary thyroid carcinoma (PTC). MATERIALS AND METHODS The study subjects were patients with PTC that had undergone first RAI therapy with thyroid hormone withdrawal after total thyroidectomy. Patients with a high level of serum anti-Tg antibody (TgAb, ≥ 60 U/mL), possible regional or distant metastasis as determined by pre-ablation or post-ablation studies, and negative iodine uptake of the anterior neck on RxWBS were excluded. Serum Tg was checked twice, that is, 7 days after (post-ablation Tg) and on the day of RAI therapy (pre-ablation Tg). Ratio of pre-ablation Tg to post-ablation Tg (Tg ratio) was used to assess changes in serum Tg levels after RAI therapy. Patients were classified into two groups according to the presence of midline uptake above the thyroidectomy bed on RxWBS (negative (group 1) or positive (group 2) midline uptake). Variables were subjected to analysis to identify differences between the two groups. RESULTS Two hundred and fifty patients were enrolled in this study; 101 in group 1 and 149 in group 2. Based on univariate analysis, post-ablation Tg (8.12 ± 11.05 vs. 34.12 ± 54.31; P < 0.001) and Tg ratio (7.81 ± 8.98 vs. 20.01 ± 19.84; P < 0.001) were significantly higher in group 2. On the other hand, gender, tumor (T) stage, lymph node (N) stage, size, multiplicity or bilaterality of primary tumor, dose of 131I, serum TgAb and thyroid-stimulating hormone (TSH) level (before or after RAI therapy) were not significantly different in the two groups. Variables with P values of < 0.25 by univariate analysis were subjected to multivariate analysis, which showed post-ablation Tg (OR 1.060, 95 % CI = 1.028-1.092; P < 0.001) and Tg ratio (OR 1.059, 95 % CI = 1.028-1.092; P = 0.001) were significantly higher in group 2. CONCLUSION Serum Tg level after RAI therapy was significantly higher in patients with midline uptake on RxWBS, compared with patients without midline uptake on RxWBS. Further investigations are needed to reveal the correlation between serum Tg elevation and clinical outcome according to the presence of midline uptake.
Collapse
Affiliation(s)
- Geum-Cheol Jeong
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Minchul Song
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| | - Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, South Korea 519-763
| |
Collapse
|
44
|
Park KS, Song HC, Cho SG, Kang SR, Kim J, Jun HM, Song M, Jeong GC, Park HJ, Kwon SY, Min JJ, Bom HHS. Open-Mouth Bone Scintigraphy Is Better than Closed-Mouth Bone Scintigraphy in the Diagnosis of Temporomandibular Osteoarthritis. Nucl Med Mol Imaging 2016; 50:213-8. [PMID: 27540425 DOI: 10.1007/s13139-016-0407-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 01/25/2016] [Accepted: 02/11/2016] [Indexed: 01/24/2023] Open
Abstract
PURPOSE Closed-mouth bone scintigraphy (CM scan) and closed-mouth single-photon emission computed tomography (CM SPECT) are used for conventional evaluation of osteoarthritis of the temporomandibular joint (TMJ). However, the adequacy of open-mouth bone scintigraphy (OM scan) has not yet been evaluated. Therefore, the purpose of this study was to compare the diagnostic performance of CM scan, CM SPECT, and OM scan. METHODS Thirty-six patients with suspicion of an abnormality of the TMJ and who underwent a (99m)Tc-HDP CM scan, CM SPECT, and an OM scan were enrolled. The scans were assessed visually for the presence of positive focal uptake in the TMJ. Osteoarthritis was defined as arthralgia plus crepitus or radiologic signs of arthrosis. RESULTS Of 72 TMJs, 21 (29.2 %) were diagnosed with osteoarthritis. The sensitivity, specificity, positive predictive value, negative predictive value and accuracy were 90.5 %, 49.0 %, 42.2 %, 92.6 % and 61.1 % for the CM scan, 81.0 %, 58.8 %, 44.7 %, 88.2 % and 65.3 % for CM SPECT, and 81.0 %, 82.4 %, 65.4 %, 91.3 % and 81.9 % for the OM scan, respectively. The accuracy of the OM scan was higher than that of CM SPECT and the CM scans (p = 0.004 and p < 0.001, respectively). CONCLUSIONS The OM scan was more accurate than the conventional CM scan and even CM SPECT for diagnosing TMJ osteoarthritis.
Collapse
Affiliation(s)
- Ki Seong Park
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Haeng Man Jun
- Department of Nuclear Medicine, Chonnam National University Hospital, 42 Jebong-ro, Donggu Gwangju, 61469 Korea
| | - Minchul Song
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Geum-Cheol Jeong
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| | - Henry Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-gun, Korea
| |
Collapse
|
45
|
Yeom M, Sur BJ, Park J, Cho SG, Lee B, Kim ST, Kim KS, Lee H, Hahm DH. Oral administration of Lactobacillus casei variety rhamnosus partially alleviates TMA-induced atopic dermatitis in mice through improving intestinal microbiota. J Appl Microbiol 2015; 119:560-70. [PMID: 25968453 DOI: 10.1111/jam.12844] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 04/23/2015] [Accepted: 05/08/2015] [Indexed: 01/19/2023]
Abstract
AIMS The purpose of this study was to investigate the effect of Lactobacillus casei variety rhamnosus (LCR35) on Atopic dermatitis (AD)-like symptoms in mice. METHODS AND RESULTS AD-like skin lesions in BALB/C mice were induced by sensitization and subsequent repeated challenges with trimellitic anhydride (TMA) for 10 days. LCR35 was orally administered to the mice once daily throughout the study. In the TMA-induced AD model, orally administered LCR35 suppressed significantly irritant-related scratching behaviour and skin dehydration as well as apparent severity of AD. LCR35 also significantly decreased serum levels of IgE and IL-4, but not IFN-γ, implying the restoration of TMA-induced disruption of Th1/Th2 balance. Quantitative real-time PCR targeting hypervariable regions of 16S rDNA gene of faecal microbiota indicated that the LCR35 treatment increased the population of Bifidobacterium, Lactobacilli, Enterococcus and Bacteroides fragilis group, but decreased those of Clostridium coccoides group. CONCLUSIONS LCR35 has the ability to suppress the development of AD in mice, possibly through the modulation of Th1/Th2 balance and gut microbiota. SIGNIFICANCE AND IMPACT OF THE STUDY LCR35 has a strong potential as a probiotic for preventing AD.
Collapse
Affiliation(s)
- M Yeom
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - B J Sur
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - J Park
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - S G Cho
- Department of Science in Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - B Lee
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - S T Kim
- Division of Meridian and Structural Medicine, School of Korean Medicine, Pusan National University, Yangsan, Korea
| | - K S Kim
- Department of Family Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - H Lee
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Korea.,Department of Science in Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Korea
| | - D H Hahm
- Acupuncture and Meridian Science Research Center, College of Korean Medicine, Kyung Hee University, Seoul, Korea.,Department of Science in Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Korea
| |
Collapse
|
46
|
Kim JH, Bom HHS, Jeong MH, Cho SG, Cho JY, Park KH, Sim DS, Hong YJ, Ahn Y, Cho JG, Park JC. Successful 13N-ammonia positron emission tomography-guided percutaneous coronary intervention in a patient with single coronary artery ostium suffering acute myocardial infarction. Int J Cardiol 2014; 174:e81-3. [PMID: 24801081 DOI: 10.1016/j.ijcard.2014.03.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 03/09/2014] [Indexed: 10/25/2022]
Affiliation(s)
- Ju Han Kim
- The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Republic of Korea
| | - Henry Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Myung Ho Jeong
- The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Republic of Korea.
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Jae Yeong Cho
- The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Republic of Korea
| | - Keun-Ho Park
- The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Republic of Korea
| | - Doo Sun Sim
- The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Republic of Korea
| | - Young Joon Hong
- The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Republic of Korea
| | - Youngkeun Ahn
- The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Republic of Korea
| | - Jeong Gwan Cho
- The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Republic of Korea
| | - Jong Chun Park
- The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Republic of Korea
| |
Collapse
|
47
|
Park HJ, Jeong GC, Kwon SY, Min JJ, Bom HS, Park KS, Cho SG, Kang SR, Kim J, Song HC, Chong A, Yoo SW. Stimulated Serum Thyroglobulin Level at the Time of First Dose of Radioactive Iodine Therapy Is the Most Predictive Factor for Therapeutic Failure in Patients With Papillary Thyroid Carcinoma. Nucl Med Mol Imaging 2014; 48:255-61. [PMID: 26396629 DOI: 10.1007/s13139-014-0282-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Revised: 05/19/2014] [Accepted: 05/22/2014] [Indexed: 11/30/2022] Open
Abstract
PURPOSE To investigate the clinical importance of serum thyroglobulin (Tg) levels just before high-dose I-131 ablation therapy (preablation Tg) for predicting therapeutic failure in patients with papillary thyroid carcinoma (PTC). METHODS Patients with PTC (n = 132) undergoing total thyroidectomy followed by the first high-dose I-131 ablation therapy (HI-Rx) were included in this retrospective review. Just before HI-Rx, preablation Tg, anti-Tg antibody, and TSH were measured. The patients were followed up for a mean period of 7 months (range 6-23 months) by I-123 whole-body scans (f/u IWBS) and stimulated Tg (f/u Tg). Therapeutic failure was defined by positive f/u IWBS or f/u Tg >2 ng/ml. We classified patients into three groups according to the value of preablation Tg (group 1, <1 ng/ml; group 2, ≥1 and <10 ng/ml; group 3, ≥10 ng/ml) and compared clinical variables to therapeutic response. RESULTS Therapeutic failure was noted in 39 patients (29.5 %). On univariate analysis, T stage, tumor size, and preablation Tg were the statistically significant factors that could predict therapeutic failure. After multivariate analysis, preablation Tg was the only independent predictor of therapeutic failure (P < 0.001). The therapeutic failure rate was significantly increased as the preablation Tg level increased (11.3 %, 33.3 %, and 87.5 % in groups 1, 2, and 3, respectively; P < 0.001). Individuals with preablation Tg levels ≥10 ng/ml had 25.5 times greater chance of therapeutic failure than those with levels <10 ng/ml (95 % CI = 5.43-119.60; P < 0.001). CONCLUSIONS A high preablation Tg level is the most significant predictor of therapeutic failure at the time of first HI-Rx in patients with PTC.
Collapse
Affiliation(s)
- Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Geum-Cheol Jeong
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun Jeonnam, Korea 519-763
| | - Ki Seong Park
- Chonnam National University Hospital, Gwangju, Korea
| | - Sang-Geon Cho
- Chonnam National University Hospital, Gwangju, Korea
| | | | - Jahae Kim
- Chonnam National University Hospital, Gwangju, Korea
| | - Ho-Chun Song
- Chonnam National University Hospital, Gwangju, Korea
| | - Ari Chong
- Chosun University Hospital, Gwangju, Korea
| | - Su Woong Yoo
- Gwangju Institute of Science and Technology, Gwangju, Korea
| |
Collapse
|
48
|
Kim HS, Cho SG, Kim JH, Kwon SY, Lee BI, Bom HS. Effect of Post-Reconstruction Gaussian Filtering on Image Quality and Myocardial Blood Flow Measurement with N-13 Ammonia PET. Asia Ocean J Nucl Med Biol 2014; 2:104-10. [PMID: 27408866 PMCID: PMC4937694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES In order to evaluate the effect of post-reconstruction Gaussian filtering on image quality and myocardial blood flow (MBF) measurement by dynamic N-13 ammonia positron emission tomography (PET), we compared various reconstruction and filtering methods with image characteristics. METHODS Dynamic PET images of three patients with coronary artery disease (male-female ratio of 2:1; age: 57, 53, and 76 years) were reconstructed, using filtered back projection (FBP) and ordered subset expectation maximization (OSEM) methods. OSEM reconstruction consisted of OSEM_2I, OSEM_4I, and OSEM_6I with 2, 4, and 6 iterations, respectively. The images, reconstructed and filtered by Gaussian filters of 5, 10, and 15 mm, were obtained, as well as non-filtered images. Visual analysis of image quality (IQ) was performed using a 3-grade scoring system by 2 independent readers, blinded to the reconstruction and filtering methods of stress images. Then, signal-to-noise ratio (SNR) was calculated by noise and contrast recovery (CR). Stress and rest MBF and coronary flow reserve (CFR) were obtained for each method. IQ scores, stress and rest MBF, and CFR were compared between the methods, using Chi-square and Kruskal-Wallis tests. RESULTS In the visual analysis, IQ was significantly higher by 10 mm Gaussian filtering, compared to other sizes of filter (P<0.001 for both readers). However, no significant difference of IQ was found between FBP and various numbers of iteration in OSEM (P=0.923 and 0.855 for readers 1 and 2, respectively). SNR was significantly higher in 10 mm Gaussian filter. There was a significant difference in stress and rest MBF between several vascular territories. However CFR was not significantly different according to various filtering methods. CONCLUSION Post-reconstruction Gaussian filtering with a filter size of 10 mm significantly enhances the IQ of N-13 ammonia PET-CT, without changing the results of CFR calculation.
Collapse
Affiliation(s)
- Hyeon Sik Kim
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-Gun, Jeollanamdo, South Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Hwasun-Gun, Jeollanamdo, South Korea
| | - Ju Han Kim
- Department of Cardiology, Chonnam National University Hospital, Hwasun-Gun, Jeollanamdo, South Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-Gun, Jeollanamdo, South Korea
| | - Byeong-il Lee
- Korea Photonics Technology Institute, Gwangju City, South Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Hwasun-Gun, Jeollanamdo, South Korea,Corresponding author: Henry Hee-Seung Bom, Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro, Hwasun-Gun, Jeollanamdo, 519-809, Republic of Korea. Tel: 82-61-379-7270; Fax: 82-61-379-7281; E-mail:
| |
Collapse
|
49
|
Kang SR, Song HC, Byun BH, Oh JR, Kim HS, Hong SP, Kwon SY, Chong A, Kim J, Cho SG, Park HJ, Kim YC, Ahn SJ, Min JJ, Bom HS. Intratumoral Metabolic Heterogeneity for Prediction of Disease Progression After Concurrent Chemoradiotherapy in Patients with Inoperable Stage III Non-Small-Cell Lung Cancer. Nucl Med Mol Imaging 2013; 48:16-25. [PMID: 24900134 DOI: 10.1007/s13139-013-0231-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 08/01/2013] [Accepted: 08/16/2013] [Indexed: 12/31/2022] Open
Abstract
PURPOSE We evaluated the value of variable (18)F-FDG PET/CT parameters for the prediction of disease progression after concurrent chemoradiotherapy (CCRT) in patients with inoperable stage III non-small-cell lung cancer (NSCLC). METHODS One hundred sixteen pretreatment FDG PET/CT scans of inoperable stage III NSCLC were retrospectively reviewed (stage IIIA: 51; stage IIIB: 65). The volume of interest was automatically drawn for each primary lung tumor, and PET parameters were assessed as follows: maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV) using the boundaries presenting SUV intensity exceeding 3.0, and the area under the curve of the cumulative SUV-volume histograms (AUC-CSH), which is known to reflect the tumor heterogeneity. Progression-free survival (PFS), locoregional recurrence-free survival (LRFS), and distant metastasis-free survival (DMFS) were compared with each PET and clinical parameters by univariate and multivariate survival analysis. RESULTS In the ROC analysis, the optimal cutoff values of SUVmax, MTV (cm(3)), and AUC-CSH for prediction of PFS were determined as 21.5, 27.7, and 4,800, respectively. In univariate analysis, PFS was statistically significantly reduced in those with AUC-CSH < 4,800 (p = 0.004). In multivariate analysis, AUC-CSH and SUVmax were statistically significant independent prognostic factors (HR 3.35, 95 % CI 1.79-6.28, p < 0.001; HR 0.25, 95 % CI 0.09-0.70, p = 0.008, respectively). Multivariate analysis showed that AUC-CSH was the most significant independent prognostic factor for LRFS and DMFS (HR 3.27, 95 % CI 1.54-6.94, p = 0.002; HR 2.79, 95 % CI 1.42-5.50, p = 0.003). CONCLUSIONS Intratumoral metabolic heterogeneity of primary lung tumor in (18)F-FDG PET/CT can predict disease progression after CCRT in inoperable stage III NSCLC.
Collapse
Affiliation(s)
- Sae-Ryung Kang
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, 501-757 Republic of Korea
| | - Ho-Chun Song
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, 501-757 Republic of Korea ; Department of Nuclear Medicine, Chonnam National University Medical School and Hospital, 42, Jebong-no, Donggu, Gwangju, 501-757 Republic of Korea
| | - Byung Hyun Byun
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Gwangju, Republic of Korea
| | - Jong-Ryool Oh
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, 501-757 Republic of Korea
| | - Hyeon-Sik Kim
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Gwangju, Republic of Korea
| | - Sun-Pyo Hong
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Gwangju, Republic of Korea
| | - Seong Young Kwon
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Gwangju, Republic of Korea
| | - Ari Chong
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, 501-757 Republic of Korea
| | - Jahae Kim
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, 501-757 Republic of Korea
| | - Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, 501-757 Republic of Korea
| | - Hee Jeong Park
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Gwangju, Republic of Korea
| | - Young-Chul Kim
- Department of Internal Medicine, Chonnam National University Hwasun Hospital, Gwangju, Republic of Korea
| | - Sung-Ja Ahn
- Department of Radiation Oncology, Chonnam National University Hwasun Hospital, Gwangju, Republic of Korea
| | - Jung-Joon Min
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, Gwangju, Republic of Korea
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, 501-757 Republic of Korea
| |
Collapse
|
50
|
Kim HS, Cho SG, Kim JH, Bom HS. Indirect Radionuclide Coronary Angiography to Evaluate Gradients of Myocardial Blood Flow and Flow Reserve Through Coronary Stenosis Using N-13 Ammonia PET/CT. Chonnam Med J 2013; 49:69-74. [PMID: 24010069 PMCID: PMC3759685 DOI: 10.4068/cmj.2013.49.2.69] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 04/15/2013] [Accepted: 04/16/2013] [Indexed: 12/16/2022] Open
Abstract
Although quantitative evaluation of myocardial blood flow (MBF) and myocardial flow reserve (MFR) has been perceived as an attractive advantage of positron emission tomography (PET) over other cardiac imaging technologies, application of the information to specific coronary lesions is a difficult task for nuclear cardiologists. We hypothesized that changes in MBF and MFR over a coronary lesion could be identified by use of a hybrid technology of CT coronary angiography (CTCA) and N-13 ammonia PET. To evaluate this hypothesis, we measured the gradient of MBF and MFR through coronary stenosis in seven patients (M:F=3:4, median age 56 years) with coronary artery disease who underwent N-13 ammonia PET, CTCA, and interventional coronary angiography. Two patients had proximal left anterior descending (LAD) coronary artery disease and five patients had mid to distal LAD disease. Mean global stress and rest MBF were 2.62±0.58 and 1.03±0.19 ml/min/g, respectively. Mean global MFR was 2.6±0.73. Regional stress and rest MBF in the LAD territory were 2.36±0.75 and 0.96±0.21 ml/min/g, respectively. Regional MFR in the LAD territory was 2.55±0.83 ml/min/g. Stress MBF changed dramatically according to the location of coronary stenosis. It dropped acutely in proximal lesions, whereas it diminished gradually in mid to distal lesions. In conclusion, by use of a hybrid technology of CTCA and PET, it was feasible to make a direct correlation of coronary lesions with the gradient of MFR and CFR through coronary stenosis, which indicated the severity of the coronary lesion. We named this technique indirect radionuclide coronary angiography.
Collapse
Affiliation(s)
- Hyun-Sik Kim
- Department of Nuclear Medicine, Chonnam National University Medical School, Gwangju, Korea
| | | | | | | |
Collapse
|