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Cerić Andelius I, Minarik D, Persson E, Mosén H, Valind K, Trägårdh E, Oddstig J. First clinical experience of a ring-configured cadmium zinc telluride camera: A comparative study versus conventional gamma camera systems. Clin Physiol Funct Imaging 2024; 44:79-88. [PMID: 37592454 DOI: 10.1111/cpf.12853] [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: 11/02/2022] [Revised: 05/08/2023] [Accepted: 08/17/2023] [Indexed: 08/19/2023]
Abstract
BACKGROUND A novel semiconductor cadmium zinc telluride (CZT) gamma camera system using a block sequential regularized expectation maximization (BSREM) reconstruction algorithm is now clinically available. Here we investigate how a multi-purpose ring-configurated CZT system can be safely applied in clinics and describe the initial optimization process. METHOD Seventy-six patients (bone-, cardiac- and lung scan) were scanned on a conventional gamma camera (planar and/or single-photon emission computed tomography [SPECT]/SPECT-CT) used in clinical routine and on the ring-configurated CZT camera Starguide (GE Healthcare). These data were used to validate and optimize the Starguide system for routine clinical use. RESULTS Comparable image quality for the Starguide system, to that of the conventional gamma camera, was achieved for bone scan (4 min/bed position [BP] using a relative difference prior [RDP] with gamma 2 and beta 0.4, along with 10 iterations and 10 subsets), cardiac scan (8 min [stress] and 3 min 20 s [rest] using median root prior [MRP] with beta 0.07 non attenuation corrected and 0.008 attenuation corrected and 50 interations and 10 subsets for both stress and rest) and lung scan (10 min [vent] and 5 min [perf] using RDP with gamma 0.5 and beta 0.03 [vent] and 0.02 [perf] and 20 interations and 10 subsets for both vent and perf). CONCLUSIONS It was possible to transition from a conventional gamma camera to the Starguide system as part of the clinical routine, with acceptable image quality. Images from the Starguide system were deemed to be at least as good as those from a conventional gamma camera.
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Affiliation(s)
| | - David Minarik
- Radiation Physics, Skåne University Hospital, Lund/Malmö, Sweden
- Department of Translational Medicine and Wallenberg Centre of Molecular Medicine, Lund University, Malmö, Sweden
| | - Eva Persson
- Department of Clinical Physiology and Nuclear Medicine, Skåne University Hospital, Lund/Malmö, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Henrik Mosén
- Department of Clinical Physiology and Nuclear Medicine, Skåne University Hospital, Lund/Malmö, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Kristian Valind
- Department of Translational Medicine and Wallenberg Centre of Molecular Medicine, Lund University, Malmö, Sweden
- Department of Clinical Physiology and Nuclear Medicine, Skåne University Hospital, Lund/Malmö, Sweden
| | - Elin Trägårdh
- Department of Translational Medicine and Wallenberg Centre of Molecular Medicine, Lund University, Malmö, Sweden
- Department of Clinical Physiology and Nuclear Medicine, Skåne University Hospital, Lund/Malmö, Sweden
| | - Jenny Oddstig
- Radiation Physics, Skåne University Hospital, Lund/Malmö, Sweden
- Department of Translational Medicine and Wallenberg Centre of Molecular Medicine, Lund University, Malmö, Sweden
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Moretti R, Meffe G, Annunziata S, Capotosti A. Innovations in imaging modalities: a comparative review of MRI, long-axial field-of-view PET, and full-ring CZT-SPECT in detecting bone metastases. Q J Nucl Med Mol Imaging 2023; 67:259-270. [PMID: 37870526 DOI: 10.23736/s1824-4785.23.03537-9] [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] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
The accurate diagnosis of bone metastasis, a condition in which cancer cells have spread to the bone, is essential for optimal patient care and outcome. This review provides a detailed overview of the current medical imaging techniques used to detect and diagnose this critical condition focusing on three cardinal imaging modalities: positron emission tomography (PET), single photon emission computed tomography (SPECT) and magnetic resonance imaging (MRI). Each of these techniques has unique advantages: PET/CT combines functional imaging with anatomical imaging, allowing precise localization of metabolic abnormalities; the SPECT/CT offers a wider range of radiopharmaceuticals for visualizing specific receptors and metabolic pathways; MRI stands out for its unparalleled ability to produce high-resolution images of bone marrow structures. However, as this paper shows, each modality has its own limitations. The comprehensive analysis does not stop at the technical aspects, but ventures into the wider implications of these techniques in a clinical setting. By understanding the synergies and shortcomings of these modalities, healthcare professionals can make diagnostic and therapeutic decisions. Furthermore, at a time when medical technology is evolving at a breakneck pace, this review casts a speculative eye towards future advances in the field of bone metastasis imaging, bridging the current state with future possibilities. Such insights are essential for both clinicians and researchers navigating the complex landscape of bone metastasis diagnosis.
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Affiliation(s)
- Roberto Moretti
- Department of Diagnostic Imaging, Radiation Oncology and Hematology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Guenda Meffe
- Department of Diagnostic Imaging, Radiation Oncology and Hematology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Salvatore Annunziata
- Department of Diagnostic Imaging, Radiation Oncology and Hematology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Amedeo Capotosti
- Department of Diagnostic Imaging, Radiation Oncology and Hematology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy -
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Motegi K, Miyaji N, Yamashita K, Koizumi M, Terauchi T. Comparison of skeletal segmentation by deep learning-based and atlas-based segmentation in prostate cancer patients. Ann Nucl Med 2022; 36:834-841. [PMID: 35773557 DOI: 10.1007/s12149-022-01763-3] [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: 03/28/2022] [Accepted: 06/09/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE We aimed to compare the deep learning-based (VSBONE BSI) and atlas-based (BONENAVI) segmentation accuracy that have been developed to measure the bone scan index based on skeletal segmentation. METHODS We retrospectively conducted bone scans for 383 patients with prostate cancer. These patients were divided into two groups: 208 patients were injected with 99mTc-hydroxymethylene diphosphonate processed by VSBONE BSI, and 175 patients were injected with 99mTc-methylene diphosphonate processed by BONENAVI. Three observers classified the skeletal segmentations as either a "Match" or "Mismatch" in the following regions: the skull, cervical vertebrae, thoracic vertebrae, lumbar vertebrae, pelvis, sacrum, humerus, rib, sternum, clavicle, scapula, and femur. Segmentation error was defined if two or more observers selected "Mismatch" in the same region. We calculated the segmentation error rate according to each administration group and evaluated the presence of hot spots suspected bone metastases in "Mismatch" regions. Multivariate logistic regression analysis was used to determine the association between segmentation error and variables like age, uptake time, total counts, extent of disease, and gamma cameras. RESULTS The regions of "Mismatch" were more common in the long tube bones for VSBONE BSI and in the pelvis and axial skeletons for BONENAVI. Segmentation error was observed in 49 cases (23.6%) with VSBONE BSI and 58 cases (33.1%) with BONENAVI. VSBONE BSI tended that "Mismatch" regions contained hot spots suspected of bone metastases in patients with multiple bone metastases and showed that patients with higher extent of disease (odds ratio = 8.34) were associated with segmentation error in multivariate logistic regression analysis. CONCLUSIONS VSBONE BSI has a potential to be higher segmentation accuracy compared with BONENAVI. However, the segmentation error in VSBONE BSI occurred dependent on bone metastases burden. We need to be careful when evaluating multiple bone metastases using VSBONE BSI.
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Affiliation(s)
- Kazuki Motegi
- Department of Nuclear Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Noriaki Miyaji
- Department of Nuclear Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan.
| | - Kosuke Yamashita
- Department of Nuclear Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan.,Graduate School of Health Sciences, Kumamoto University, 2-39-1, Kuroge, Chuo-ku, Kumamoto City, Kumamoto, 860-0862, Japan
| | - Mitsuru Koizumi
- Department of Nuclear Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan
| | - Takashi Terauchi
- Department of Nuclear Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-8-31, Ariake, Koto-ku, Tokyo, 135-8550, Japan
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Lee JW, Chang SH, Jang SJ, Park HJ, Lee SM, Jung KJ. Clinical utility of quantitative analysis of bone scintigraphy in detecting clinically active joint and high disease activity in patients with rheumatoid arthritis. BMC Med Imaging 2021; 21:177. [PMID: 34814863 PMCID: PMC8611961 DOI: 10.1186/s12880-021-00712-2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 11/19/2021] [Indexed: 11/23/2022] Open
Abstract
Background The purpose of this study was to investigate the efficiency of quantitative parameters of bone scintigraphy in detecting clinically active joint and high disease activity in patients with rheumatoid arthritis. Methods We retrospectively enrolled 65 patients with rheumatoid arthritis who underwent bone scintigraphy for diagnostic work-up. Quantitative analysis of bone scintigraphy images was conducted using an in-house software, and joint uptake ratio of 28 joints was measured for the calculation of the disease activity score of 28 joints using erythrocyte sedimentation rate (DAS28-ESR). The relationship between joint uptake ratio and clinical findings and the efficiency of joint uptake ratio in detecting clinically active joint and high disease activity were assessed. Results Clinically active joint (tender and/or swollen joints) showed significantly higher joint uptake ratio than did other non-affected joints (p < 0.05). The sensitivity, specificity, positive predictive value, and negative predictive value (NPV) of joint uptake ratio for identifying clinically active joint were 78.7%, 52.0%, 32.9%, and 89.1%, respectively, and those of the summed joint uptake ratio for detecting high disease activity were 92.9%, 66.8%, 43.3%, and 97.1%, respectively; the joint uptake ratio showed high detection ability, especially for active joints of the elbow, wrist, and metacarpo-phalangeal joint areas. The summed joint uptake ratio of 28 joints showed a significantly strong positive correlation with DAS28-ESR (p < 0.001; correlation coefficient, 0.725). Conclusion Quantitative parameters of bone scintigraphy showed high sensitivity and NPV for detecting clinically active joint and high disease activity in patients with rheumatoid arthritis.
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Affiliation(s)
- Jeong Won Lee
- Department of Nuclear Medicine, Catholic Kwandong University College of Medicine, International St. Mary's Hospital, 25 Simgok-ro 100-gil, Seo-gu, Incheon, 22711, Korea
| | - Sung Hae Chang
- Division of Rheumatology, Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, 31 Suncheonhyang 6-gil, Dongnam-gu, Cheonan, 31151, Chuncheongnam-do, Korea
| | - Su Jin Jang
- Department of Nuclear Medicine, CHA Bundang Medical Center, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, 13496, Gyeonggi-do, Korea
| | - Hee Jin Park
- Division of Rheumatology, Department of Internal Medicine, Catholic Kwandong University College of Medicine, International St. Mary's Hospital, 25 Simgok-ro 100-gil, Seo-gu, Incheon, 22711, Korea
| | - Sang Mi Lee
- Department of Nuclear Medicine, Soonchunhyang University Cheonan Hospital, 31 Suncheonhyang 6-gil, Dongnam-gu, Cheonan, 31151, Chungcheongnam-do, Korea.
| | - Ki Jin Jung
- Department of Orthopedic Surgery, Soonchunhyang University Cheonan Hospital, 31 Suncheonhyang 6-gil, Dongnam-gu, Cheonan, 31151, Chungcheongnam-do, Korea.
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Cuvilliers C, Palard-Novello X, Pontoizeau C, Meneret P, Devillers A, Le Jeune F, Girard A. The Added Value of Bloodpool SPECT/CT in Painful Non-Operated Foot and Ankle Undiagnosed With Standard Three-Phase Bone Scintigraphy. Front Med (Lausanne) 2021; 8:634419. [PMID: 33763434 PMCID: PMC7982933 DOI: 10.3389/fmed.2021.634419] [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: 11/27/2020] [Accepted: 01/28/2021] [Indexed: 11/21/2022] Open
Abstract
Purpose: To evaluate the interest of adding a bloodpool SPECT/CT to standard three-phase bone scintigraphy (BS) for etiological diagnosis of subacute and chronic lower extremity pains. Methods: We prospectively included patients addressed for pain of lower extremities lasting for at least 6 weeks, without previous surgery. They underwent a standard three-phase BS including late phase SPECT/CT, modified with an additional bloodpool SPECT/CT acquisition. Two independent physicians interpreted the images provided by both protocols. Diagnostic conclusion, diagnostic confidence, and interrater agreements were compared. Results: One hundred and eighteen lower extremities from 113 patients were analyzed (71 men, median age of 53 years). Adding bloodpool SPECT/CT to standard three-phase BS changed diagnostic conclusions in 24.6% (29/118) of lower extremities. The modified protocol revealed at least one diagnostic conclusion explaining the pain in 89% of extremities, rather than 83.1% with the standard protocol (p = 0.02). Tendinopathies were diagnosed in 12.7% of lower extremities, rather than 4.2% with standard BS (p = 0.002). Adding bloodpool SPECT/CT substantially increased overall confidence of each reader (p < 0.001). Inter-reader agreement was not significantly impacted. Conclusion: Adding bloodpool SPECT/CT to standard three-phase BS impacted diagnostic conclusion in a quarter of the patients with painful lower extremities, notably by revealing significantly more tendonitis.
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Affiliation(s)
- Cécile Cuvilliers
- Nuclear Medicine Department, Centre Eugène Marquis, Rennes, France.,University of Rennes 1, Rennes, France
| | - Xavier Palard-Novello
- Nuclear Medicine Department, Centre Eugène Marquis, Rennes, France.,University of Rennes 1, Rennes, France
| | | | - Pierre Meneret
- Nuclear Medicine Department, Centre Eugène Marquis, Rennes, France.,University of Rennes 1, Rennes, France
| | - Anne Devillers
- Nuclear Medicine Department, Centre Eugène Marquis, Rennes, France
| | - Florence Le Jeune
- Nuclear Medicine Department, Centre Eugène Marquis, Rennes, France.,University of Rennes 1, Rennes, France
| | - Antoine Girard
- Nuclear Medicine Department, Centre Eugène Marquis, Rennes, France.,University of Rennes 1, Rennes, France
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Bordonne M, Chawki MB, Marie PY, Zaragori T, Roch V, Grignon R, Imbert L, Verger A. High-quality brain perfusion SPECT images may be achieved with a high-speed recording using 360° CZT camera. EJNMMI Phys 2020; 7:65. [PMID: 33146804 PMCID: PMC7642149 DOI: 10.1186/s40658-020-00334-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 04/24/2020] [Accepted: 10/19/2020] [Indexed: 12/11/2022] Open
Abstract
Objective The aim of this study was to compare brain perfusion SPECT obtained from a 360° CZT and a conventional Anger camera. Methods The 360° CZT camera utilizing a brain configuration, with 12 detectors surrounding the head, was compared to a 2-head Anger camera for count sensitivity and image quality on 30-min SPECT recordings from a brain phantom and from 99mTc-HMPAO brain perfusion in 2 groups of 21 patients investigated with the CZT and Anger cameras, respectively. Image reconstruction was adjusted according to image contrast for each camera. Results The CZT camera provided more than 2-fold increase in count sensitivity, as compared with the Anger camera, as well as (1) lower sharpness indexes, giving evidence of higher spatial resolution, for both peripheral/central brain structures, with respective median values of 5.2%/3.7% versus 2.4%/1.9% for CZT and Anger camera respectively in patients (p < 0.01), and 8.0%/6.9% versus 6.2%/3.7% on phantom; and (2) higher gray/white matter contrast on peripheral/central structures, with respective ratio median values of 1.56/1.35 versus 1.11/1.20 for CZT and Anger camera respectively in patients (p < 0.05), and 2.57/2.17 versus 1.40/1.12 on phantom; and (3) no change in noise level. Image quality, scored visually by experienced physicians, was also significantly higher on CZT than on the Anger camera (+ 80%, p < 0.01), and all these results were unchanged on the CZT images obtained with only a 15 min recording time. Conclusion The 360° CZT camera provides brain perfusion images of much higher quality than a conventional Anger camera, even with high-speed recordings, thus demonstrating the potential for repositioning brain perfusion SPECT to the forefront of brain imaging. Supplementary Information The online version contains supplementary material available at 10.1186/s40658-020-00334-7.
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Affiliation(s)
- Manon Bordonne
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France.,Médecine Nucléaire, CHRU-Nancy Brabois, Allée du Morvan, 54500 Vandoeuvre-lès-, Nancy, France
| | - Mohammad B Chawki
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France
| | - Pierre-Yves Marie
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France.,Université de Lorraine, INSERM, UMR-1116 DCAC, F-54000, Nancy, France
| | | | - Véronique Roch
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France
| | - Rachel Grignon
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France
| | - Laetitia Imbert
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France. .,Médecine Nucléaire, CHRU-Nancy Brabois, Allée du Morvan, 54500 Vandoeuvre-lès-, Nancy, France. .,Université de Lorraine, INSERM U1254, IADI, F-54000, Nancy, France.
| | - Antoine Verger
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France.,Université de Lorraine, INSERM U1254, IADI, F-54000, Nancy, France
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Melki S, Chawki MB, Marie PY, Imbert L, Verger A. Augmented planar bone scintigraphy obtained from a whole-body SPECT recording of less than 20 min with a high-sensitivity 360° CZT camera. Eur J Nucl Med Mol Imaging 2019; 47:1329-1331. [PMID: 31606830 DOI: 10.1007/s00259-019-04525-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 09/04/2019] [Indexed: 11/26/2022]
Affiliation(s)
| | | | - Pierre-Yves Marie
- Nuclear Medicine Department, CHRU-Nancy, Nancy, France
- Nancyclotep Imaging Platform, CHRU-Nancy, Nancy, France
| | - Laetitia Imbert
- Nuclear Medicine Department, CHRU-Nancy, Nancy, France.
- Nancyclotep Imaging Platform, CHRU-Nancy, Nancy, France.
- INSERM U1254, IADI, Lorraine University, Nancy, France.
| | - Antoine Verger
- Nuclear Medicine Department, CHRU-Nancy, Nancy, France
- Nancyclotep Imaging Platform, CHRU-Nancy, Nancy, France
- INSERM U1254, IADI, Lorraine University, Nancy, France
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Salvatori M, Rizzo A, Rovera G, Indovina L, Schillaci O. Radiation dose in nuclear medicine: the hybrid imaging. Radiol Med 2019; 124:768-776. [PMID: 30771217 DOI: 10.1007/s11547-019-00989-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 11/26/2018] [Accepted: 01/14/2019] [Indexed: 01/10/2023]
Abstract
Hybrid imaging procedures such as single-photon emission computed tomography/computed tomography (SPECT/CT) and positron emission tomography/computed tomography (PET/CT) showed a rapid diffusion in recent years because of their high sensitivity, specificity, and accuracy, due to a more accurate localization and definition of scintigraphic findings. However, hybrid systems inevitably lead to an increase in patient radiation exposure because of the added CT component. Effective doses due to the radiopharmaceuticals can be estimated by multiplying the administered activities by the effective dose coefficients, while for the CT component the dose-length product can be multiplied by a conversion coefficient k. However, the effective dose value is subject to a high degree of uncertainty and must be interpreted as a broad, generic estimate of biologic risk. Although the effective dose can be used to estimate and compare the risk of radiation exposure across multiple imaging techniques, clinicians should be aware that it represents a generic evaluation of the risk derived from a given procedure to a generic model of the human body. It cannot be applied to a single individual and should not be used for epidemiologic studies or the estimation of population risks due to the inherent uncertainties and oversimplifications involved. Practical ways to reduce radiation dose to patients eligible for hybrid imaging involve adjustments to both the planning phase and throughout the execution of the study. These methods include individual justification of radiation exposure, radiopharmaceutical choice, adherence to diagnostic reference levels (DLR), patient hydration and bladder voiding, adoption of new technical devices (sensitive detectors or collimators) with new reconstruction algorithms, and implementation of appropriate CT protocols and exposure parameters.
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Affiliation(s)
- Massimo Salvatori
- Dipartimento Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Istituto di Medicina Nucleare, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Università Cattolica del Sacro Cuore, Largo Agostino Gemelli 8, Rome, 00168, Italy.
| | - Alessio Rizzo
- Dipartimento Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Istituto di Medicina Nucleare, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Università Cattolica del Sacro Cuore, Largo Agostino Gemelli 8, Rome, 00168, Italy
| | - Guido Rovera
- Dipartimento Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Istituto di Medicina Nucleare, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Università Cattolica del Sacro Cuore, Largo Agostino Gemelli 8, Rome, 00168, Italy
| | - Luca Indovina
- Dipartimento Diagnostica per Immagini, Radioterapia Oncologica ed Ematologia, Fondazione Policlinico Universitario Agostino Gemelli - IRCCS, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Orazio Schillaci
- Dipartimento di Biomedicina e Prevenzione, Università di Roma Tor Vergata, Rome, Italy.,IRCSS Neuromed, Pozzilli, Italy
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Gregoire B, Pina-jomir G, Bani-sadr A, Moreau-triby C, Janier M, Scheiber C. Four-Minute Bone SPECT Using Large-Field Cadmium-Zinc-Telluride Camera. Clin Nucl Med 2018; 43:389-95. [DOI: 10.1097/rlu.0000000000002062] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Miyazaki Y, Kato Y, Imoto A, Fukuchi K. Imaging of the thyroid and parathyroid using a cardiac cadmium zinc telluride camera: Phantom studies. J Nucl Med Technol 2017; 46:jnmt.117.199042. [PMID: 29127244 DOI: 10.2967/jnmt.117.199042] [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: 07/10/2017] [Accepted: 09/23/2017] [Indexed: 11/16/2022] Open
Abstract
Purpose: Cadmium zinc telluride (CZT) detectors have recently been introduced to the field of clinical nuclear cardiology. However, the feasibility of using them for organs other than the heart remains unclear. The aim of this study was to evaluate the potential of a cardiac CZT camera to acquire thyroid and parathyroid images. We used custom-made phantoms and the currently available standard protocols for CZT, instead of a sodium-iodine scintillation (NaI) camera. Materials and Methods: Thyroid phantoms with or without parathyroid adenomas were made from agar using radiopharmaceuticals (99mTc or 123I) and imaged using CZT and NaI cameras. Using the CZT camera data, we prepared maximum intensity projection (MIP) images and planar equivalent (PE) images. Image counts were compared to those from the NaI camera, and the radioactivity of the phantoms was measured. For parathyroid imaging, three different protocols with the NaI camera were tested using MIP images. Results: For thyroid imaging, MIP could provide images as clear as those obtained from the NaI camera. The radioactivity and image counts correlated better for the PE images than the MIP images, especially for 123I images. We succeeded in obtaining clear parathyroid adenoma images from MIP images using all three protocols. Conclusion: A cardiac CZT camera can effectively perform qualitative and quantitative assessments of the thyroid and parathyroid organs.
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