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Cereser L, De Carli M, d’Angelo P, Zanelli E, Zuiani C, Girometti R. High-resolution computed tomography findings in humoral primary immunodeficiencies and correlation with pulmonary function tests. World J Radiol 2018; 10:172-183. [PMID: 30568751 PMCID: PMC6288673 DOI: 10.4329/wjr.v10.i11.172] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 07/16/2018] [Revised: 09/22/2018] [Accepted: 10/07/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To compare high-resolution computed tomography (HRCT) findings between humoral primary immunodeficiencies (hPIDs) subtypes; to correlate these findings to pulmonary function tests (PFTs).
METHODS We retrospectively identified 52 consecutive adult patients with hPIDs who underwent 64-row HRCT and PFTs at the time of diagnosis. On a per-patient basis, an experienced radiologist recorded airway abnormalities (bronchiectasis, airway wall thickening, mucus plugging, tree-in-bud, and air-trapping) and parenchymal-interstitial abnormalities (consolidations, ground-glass opacities, linear and/or irregular opacities, nodules, and bullae/cysts) found on HRCT. The chi-square test was performed to compare the prevalence of each abnormality among patients with different subtypes of hPIDs. Overall logistic regression analysis was performed to assess whether HRCT findings predicted obstructive and/or restrictive PFTs results (absent-to-mild vs moderate-to-severe).
RESULTS Thirty-eight of the 52 patients with hPIDs showed common variable immunodeficiency disorders (CVID), while the remaining 14 had CVID-like conditions (i.e., 11 had isolated IgG subclass deficiencies and 3 had selective IgA deficiencies). The prevalence of most HRCT abnormalities was not significantly different between CVID and CVID-like patients (P > 0.05), except for linear and/or irregular opacities (prevalence of 31.6% in the CVID group and 0 in the CVID-like group; P = 0.0427). Airway wall thickening was the most frequent HRCT abnormality found in both CVID and CVID-like patients (71% of cases in both groups). The presence of tree-in-bud abnormalities was an independent predictor of moderate-to-severe obstructive defects at PFTs (Odds Ratio, OR, of 18.75, P < 0.05), while the presence of linear and/or irregular opacities was an independent predictor of restrictive defects at PFTs (OR = 13.00; P < 0.05).
CONCLUSION CVID and CVID-like patients showed similar HRCT findings. Tree-in-bud and linear and/or irregular opacities predicted higher risks of, respectively, obstructive and restrictive defects at PFTs.
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Affiliation(s)
- Lorenzo Cereser
- Institute of Radiology, Department of Medicine, University of Udine, Azienda Sanitaria Universitaria Integrata di Udine, Udine 33100, Italy
| | - Marco De Carli
- Second Unit of Internal Medicine, Azienda Sanitaria Universitaria Integrata di Udine, Udine 33100, Italy
| | - Paola d’Angelo
- Institute of Radiology, Department of Medicine, University of Udine, Azienda Sanitaria Universitaria Integrata di Udine, Udine 33100, Italy
- Department of Imaging, Bambino Gesù Children's Hospital, IRCCS, Rome 00165, Italy
| | - Elisa Zanelli
- Institute of Radiology, Department of Medicine, University of Udine, Azienda Sanitaria Universitaria Integrata di Udine, Udine 33100, Italy
| | - Chiara Zuiani
- Institute of Radiology, Department of Medicine, University of Udine, Azienda Sanitaria Universitaria Integrata di Udine, Udine 33100, Italy
| | - Rossano Girometti
- Institute of Radiology, Department of Medicine, University of Udine, Azienda Sanitaria Universitaria Integrata di Udine, Udine 33100, Italy
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152
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Kavanagh RG, O’Grady J, Carey BW, O’Connor OJ, Maher MM. Review of the role of abdominal imaging in irritable bowel syndrome. World J Radiol 2018; 10:143-149. [PMID: 30568748 PMCID: PMC6288676 DOI: 10.4329/wjr.v10.i11.143] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 08/30/2018] [Accepted: 10/09/2018] [Indexed: 02/06/2023] Open
Abstract
The role of radiologic imaging in the investigation of irritable bowel syndrome (IBS) remains a subject of debate and there is some evidence, from recent studies of utilization of imaging in IBS, which focused on associated costs and radiation exposure, that imaging is being used relatively widely in these patients. This review aims to assess current best evidence to accurately define the role of radiologic imaging in IBS patients. Primary and secondary literature searches were performed. Evidence suggests that the lack of "red flag" or alarm features in IBS patients should reassure the clinician that the diagnosis of IBS is correct and United States and United Kingdom guidelines recommend no radiologic imaging for IBS patients if alarm features are not present. In patients presenting with IBS symptoms and alarm features, radiologic testing may be used to exclude an alternative diagnosis and the imaging modality should be chosen based on the most likely alternative diagnosis.
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Affiliation(s)
- Richard G Kavanagh
- Department of Radiology, Cork University Hospital, Cork T12 DC4A, Ireland
| | - John O’Grady
- Department of Gastroenterology, Cork University Hospital, Cork T12 DC4A, Ireland
- APC Microbiome Ireland, University College Cork, Cork T12 DC4A, Ireland
| | - Brian W Carey
- Department of Radiology, Cork University Hospital, Cork T12 DC4A, Ireland
| | - Owen J O’Connor
- Department of Radiology, Cork University Hospital, Cork T12 DC4A, Ireland
- APC Microbiome Ireland, University College Cork, Cork T12 DC4A, Ireland
| | - Michael M Maher
- Department of Radiology, Cork University Hospital, Cork T12 DC4A, Ireland
- APC Microbiome Ireland, University College Cork, Cork T12 DC4A, Ireland
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153
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Hagiwara S, Yang A, Takao S, Kaneko Y, Nozaki T, Yoshioka H. New scoring system in assessment of Hoffa’s fat pad synovitis: A comparative study with established scoring systems. World J Radiol 2018; 10:162-171. [PMID: 30568750 PMCID: PMC6288675 DOI: 10.4329/wjr.v10.i11.162] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/22/2018] [Accepted: 10/06/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the reliability of the established and new scoring methods for Hoffa’s fat pad synovitis using magnetic resonance imaging (MRI).
METHODS A total of 139 knees of 115 patients who underwent MRI of the knee with and without gadolinium contrast were enrolled in this study. Proton density (PD)-weighted, PD-weighted fat-suppressed (PD-FS), and postcontrast T1-weighted fat-suppressed (T1CE) images were used for evaluation. Using contrast and non-contrast images, our grading method for synovitis was performed to measure synovial thickness and signal intensity changes of the fat pad [Synovial membrane (SM) score], which was compared with the established methods, including MRI Osteoarthritis Knee Score (MOAKS), parapatellar synovitis score, Whole-Organ Magnetic Resonance Imaging Score (WORMS), and suprapatellar effusion diameter. Intraclass correlation coefficients (ICC) for intra and interobserver reproducibility and Spearman correlation coefficients (r) were calculated for the parapatellar synovitis score and each scoring method.
RESULTS All of the scores presented substantial to almost perfect intrareliability. Among three readers, effusion diameter had substantial to almost perfect interreliability (ICC = 0.68-0.81) and WORMS had substantial interreliability (ICC = 0.61-0.70). For two out of three readers, there was substantial interreliability for the thickness score in T1CE (ICC = 0.55-0.69), SM scores in T1CE (ICC = 0.56-0.78) and PD-FS (ICC = 0.51-0.79), and parapatellar synovitis score in T1CE (ICC = 0.53-0.72). The parapatellar synovitis score was significantly correlated with the thickness score in T1CE (r = 0.70) and the SM score in T1CE (r = 0.81) and PD-FS (r = 0.65).
CONCLUSION The newly proposed quantitative thickness score on T1CE and the semi-quantitative SM score on T1CE and PD-FS can be useful for Hoffa’s fat pad synovitis.
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Affiliation(s)
- Shigeo Hagiwara
- Department of Radiological Sciences, University of California Irvine Medical Center, Orange, CA 92868, United States
| | - Albert Yang
- Department of Radiological Sciences, University of California Irvine Medical Center, Orange, CA 92868, United States
| | - Shoichiro Takao
- Department of Radiological Sciences, University of California Irvine Medical Center, Orange, CA 92868, United States
| | - Yasuhito Kaneko
- Department of Radiological Sciences, University of California Irvine Medical Center, Orange, CA 92868, United States
| | - Taiki Nozaki
- Department of Radiological Sciences, University of California Irvine Medical Center, Orange, CA 92868, United States
| | - Hiroshi Yoshioka
- Department of Radiological Sciences, University of California Irvine Medical Center, Orange, CA 92868, United States
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154
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Kaufman AE, Pruzan AN, Hsu C, Ramachandran S, Jacobi A, Patel I, Schwocho L, Mercuri MF, Fayad ZA, Mani V. Reproducibility of thrombus volume quantification in multicenter computed tomography pulmonary angiography studies. World J Radiol 2018; 10:124-134. [PMID: 30386497 PMCID: PMC6205841 DOI: 10.4329/wjr.v10.i10.124] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/27/2018] [Accepted: 08/05/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate reproducibility of pulmonary embolism (PE) clot volume quantification using computed tomography pulmonary angiogram (CTPA) in a multicenter setting.
METHODS This study was performed using anonymized data in conformance with HIPAA and IRB Regulations (March 2015-November 2016). Anonymized CTPA data was acquired from 23 scanners from 18 imaging centers using each site’s standard PE protocol. Two independent analysts measured PE volumes using a semi-automated region-growing algorithm on an FDA-approved image analysis platform. Total thrombus volume (TTV) was calculated per patient as the primary endpoint. Secondary endpoints were individual thrombus volume (ITV), Qanadli score and modified Qanadli score per patient. Inter- and intra-observer reproducibility were assessed using intra-class correlation coefficient (ICC) and Bland-Altman analysis.
RESULTS Analyst 1 found 72 emboli in the 23 patients with a mean number of emboli of 3.13 per patient with a range of 0-11 emboli per patient. The clot volumes ranged from 0.0041 - 47.34 cm3 (mean +/- SD, 5.93 +/- 10.15cm3). On the second read, analyst 1 found the same number and distribution of emboli with a range of volumes for read 2 from 0.0041 – 45.52 cm3 (mean +/- SD, 5.42 +/- 9.53cm3). Analyst 2 found 73 emboli in the 23 patients with a mean number of emboli of 3.17 per patient with a range of 0-11 emboli per patient. The clot volumes ranged from 0.00459-46.29 cm3 (mean +/- SD, 5.91 +/- 10.06 cm3). Inter- and intra-observer variability measurements indicated excellent reproducibility of the semi-automated method for quantifying PE volume burden. ICC for all endpoints was greater than 0.95 for inter- and intra-observer analysis. Bland-Altman analysis indicated no significant biases.
CONCLUSION Semi-automated region growing algorithm for quantifying PE is reproducible using data from multiple scanners and is a suitable method for image analysis in multicenter clinical trials.
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Affiliation(s)
- Audrey E Kaufman
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
| | - Alison N Pruzan
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
| | - Ching Hsu
- Daiichi Sankyo Inc., Basking Ridge, NJ 07920, United States
| | - Sarayu Ramachandran
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
| | - Adam Jacobi
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
| | - Indravadan Patel
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Daiichi Sankyo Inc., Basking Ridge, NJ 07920, United States
| | - Lee Schwocho
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Daiichi Sankyo Inc., Basking Ridge, NJ 07920, United States
| | - Michele F Mercuri
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Daiichi Sankyo Inc., Basking Ridge, NJ 07920, United States
| | - Zahi A Fayad
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
| | - Venkatesh Mani
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
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155
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Richards CE, Dorman S, John P, Davies A, Evans S, Ninan T, Martin D, Kannoly S, Roberts-Davies G, Ramsey M, Obaid DR. Low-radiation and high image quality coronary computed tomography angiography in “real-world” unselected patients. World J Radiol 2018; 10:135-142. [PMID: 30386498 PMCID: PMC6205842 DOI: 10.4329/wjr.v10.i10.135] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [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: 04/28/2018] [Revised: 08/14/2018] [Accepted: 10/08/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To determine the radiation dose and image quality in coronary computed tomography angiography (CCTA) using state-of-the-art dose reduction methods in unselected “real world” patients.
METHODS In this single-centre study, consecutive patients in sinus rhythm underwent CCTA for suspected coronary artery disease (CAD) using a 320-row detector CT scanner. All patients underwent the standard CT acquisition protocol at our institute (Morriston Hospital) a combination of dose saving advances including prospective electrocardiogram-gating, automated tube current modulation, tube voltage reduction, heart rate reduction, and the most recent novel adaptive iterative dose reconstruction 3D (AIDR3D) algorithm. The cohort comprised real-world patients for routine CCTA who were not selected on age, body mass index, or heart rate. Subjective image quality was graded on a 4-point scale (4 = excellent, 1 = non-diagnostic).
RESULTS A total of 543 patients were included in the study with a mean body weight of 81 ± 18 kg and a pre-scan mean heart rate of 70 ± 11 beats per minute (bpm). When indicated, patients received rate-limiting medication with an oral beta-blocker followed by additional intravenous beta-blocker to achieve a heart rate below 65 bpm. The median effective radiation dose was 0.88 mSv (IQR, 0.6-1.4 mSv) derived from a Dose Length Product of 61.45 mGy.cm (IQR, 42.86-100.00 mGy.cm). This also includes what we believe to be the lowest ever-reported radiation dose for a routine clinical CCTA (0.18 mSv). The mean image quality (± SD) was 3.65 ± 0.61, with a subjective image quality score of 3 (“good”) or above for 93% of patient CCTAs.
CONCLUSION Combining a low-dose scan protocol and AIDR3D with a 320-detector row CT scanner can provide high quality images at exceptionally low radiation dose in unselected patients being investigated for CAD.
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Affiliation(s)
- Caryl Elizabeth Richards
- Swansea University Medical School, Swansea University, Grove Building, Singleton Park, Sketty, Swansea SA2 8PP, United Kingdom
| | - Stephen Dorman
- Department of Cardiology, Morriston Hospital, Heol Maes Eglwys, Morriston, Cwmrhydyceirw, Swansea SA6 6NL, United Kingdom
| | - Patricia John
- Department of Radiology, Morriston Hospital, Heol Maes Eglwys, Morriston, Cwmrhydyceirw, Swansea SA6 6NL, United Kingdom
| | - Anthony Davies
- Department of Radiology, Morriston Hospital, Heol Maes Eglwys, Morriston, Cwmrhydyceirw, Swansea SA6 6NL, United Kingdom
| | - Sharon Evans
- Department of Radiology, Morriston Hospital, Heol Maes Eglwys, Morriston, Cwmrhydyceirw, Swansea SA6 6NL, United Kingdom
| | - Tishi Ninan
- Department of Radiology, Morriston Hospital, Heol Maes Eglwys, Morriston, Cwmrhydyceirw, Swansea SA6 6NL, United Kingdom
| | - David Martin
- Department of Radiology, Singleton Hospital, Sketty Ln, Sketty, Swansea SA2 8QA, United Kingdom
| | - Sriranj Kannoly
- Department of Cardiology, Singleton Hospital, Sketty Ln, Sketty, Swansea SA2 8QA, United Kingdom
| | - Gail Roberts-Davies
- Department of Radiology, Singleton Hospital, Sketty Ln, Sketty, Swansea SA2 8QA, United Kingdom
| | - Mark Ramsey
- Department of Cardiology, Morriston Hospital, Heol Maes Eglwys, Morriston, Cwmrhydyceirw, Swansea SA6 6NL, United Kingdom
| | - Daniel Rhys Obaid
- Swansea University Medical School, Swansea University, Grove Building, Singleton Park, Sketty, Swansea SA2 8PP, United Kingdom
- Department of Cardiology, Morriston Hospital, Heol Maes Eglwys, Morriston, Cwmrhydyceirw, Swansea SA6 6NL, United Kingdom
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156
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Zuo HD, Zhang XM. Could intravoxel incoherent motion diffusion-weighted magnetic resonance imaging be feasible and beneficial to the evaluation of gastrointestinal tumors histopathology and the therapeutic response? World J Radiol 2018; 10:116-123. [PMID: 30386496 PMCID: PMC6205843 DOI: 10.4329/wjr.v10.i10.116] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/02/2018] [Accepted: 08/26/2018] [Indexed: 02/06/2023] Open
Abstract
Gastrointestinal tumors (GTs) are among the most common tumors of the digestive system and are among the leading causes of cancer death worldwide. Functional magnetic resonance imaging (MRI) is crucial for assessment of histopathological changes and therapeutic responses of GTs before and after chemotherapy and radiotherapy. A new functional MRI technique, intravoxel incoherent motion (IVIM), could reveal more detailed useful information regarding many diseases. Currently, IVIM is widely used for various tumors because the derived parameters (diffusion coefficient, D; pseudo-perfusion diffusion coefficient, D*; and perfusion fraction, f) are thought to be important surrogate imaging biomarkers for gaining insights into tissue physiology. They can simultaneously reflect the microenvironment, microcirculation in the capillary network (perfusion) and diffusion in tumor tissues without contrast agent intravenous administration. The sensitivity and specificity of these parameters used in the evaluation of GTs vary, the results of IVIM in GTs are discrepant and the variability of IVIM measurements in response to chemotherapy and/or radiotherapy in these studies remains a source of controversy. Therefore, there are questions as to whether IVIM diffusion-weighted MRI is feasible and helpful in the evaluation of GTs, and whether it is worthy of expanded use.
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Affiliation(s)
- Hou-Dong Zuo
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - Xiao-Ming Zhang
- Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
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157
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Ibrahim ESH, Runge M, Stojanovska J, Agarwal P, Ghadimi-Mahani M, Attili A, Chenevert T, den Harder C, Bogun F. Optimized cardiac magnetic resonance imaging inversion recovery sequence for metal artifact reduction and accurate myocardial scar assessment in patients with cardiac implantable electronic devices. World J Radiol 2018; 10:100-107. [PMID: 30310544 PMCID: PMC6177559 DOI: 10.4329/wjr.v10.i9.100] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 04/25/2018] [Revised: 07/12/2018] [Accepted: 07/16/2018] [Indexed: 02/06/2023] Open
Abstract
Late gadolinium enhancement (LGE) cardiovascular magnetic resonance (CMR) is the gold standard for imaging myocardial viability. An important application of LGE CMR is the assessment of the location and extent of the myocardial scar in patients with ventricular tachycardia (VT), which allows for more accurate identification of the ablation targets. However, a large percentage of patients with VT have cardiac implantable electronic devices (CIEDs), which is a relative contraindication for cardiac magnetic resonance imaging due to safety and image artifact concerns. Previous studies showed that these patients can be safely scanned on 1.5 T scanners provided that an adequate imaging protocol is adopted. Nevertheless, imaging patients with a CIED result in metal artifacts due to the strong frequency off-resonance effects near the device; therefore, the spins in the surrounding myocardium are not completely inverted, and thus give rise to hyperintensity artifacts. These artifacts obscure the myocardial scar tissue and limit the ability to study the correlation between the myocardial scar structure and the electro-anatomical map during catheter ablation. In this study, we developed a modified inversion recovery technique to alleviate the CIED-induced metal artifacts and improve the diagnostic image quality of LGE images in patients with CIEDs without increasing scan time or requiring additional hardware. The developed technique was tested in phantom experiments and in vivo scans, which showed its capability for suppressing the hyperintensity artifacts without compromising myocardium nulling in the resulting LGE images.
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Affiliation(s)
- El-Sayed H Ibrahim
- Department of Radiology, Medical College of Wisconsin, Milwaukee, WI 53226, United States
| | - Mason Runge
- Department of Radiology, University of Michigan, Ann Arbor, MI 48109, United States
| | - Jadranka Stojanovska
- Department of Radiology, University of Michigan, Ann Arbor, MI 48109, United States
| | - Prachi Agarwal
- Department of Radiology, University of Michigan, Ann Arbor, MI 48109, United States
| | | | - Anil Attili
- Department of Radiology, University of Michigan, Ann Arbor, MI 48109, United States
| | - Thomas Chenevert
- Department of Radiology, University of Michigan, Ann Arbor, MI 48109, United States
| | - Chiel den Harder
- Department of Medical Physics, Leiden University Medical Center, Leiden 2333ZA, The Netherlands
| | - Frank Bogun
- Department of Radiology, University of Michigan, Ann Arbor, MI 48109, United States
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158
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Han Y, Kwon JH, Park S. Korean single-center experience with femoral access closure using the ExoSeal device. World J Radiol 2018; 10:108-115. [PMID: 30310545 PMCID: PMC6177558 DOI: 10.4329/wjr.v10.i9.108] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 08/06/2018] [Accepted: 08/24/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To report 17-mo experience of femoral artery puncture site closure during angiographic procedures using ExoSeal vascular closure devices (VCDs).
METHODS Between November 2015 and April 2017, we performed 179 diagnostic and interventional angiographic procedures via a common femoral arterial access. The ExoSeal VCD was used at the puncture site to achieve hemostasis in 125 patients. We evaluated the technical and procedural success rates, the complications, and the factors affecting the hemostasis time of the ExoSeal VCDs.
RESULTS Technical and procedural successes were achieved in 176 cases (98.0%) and 128 cases (71.5%), respectively. Device failure occurred in 3 (1.7%) cases. In 1 case (0.6%) a small hematoma developed, but there were no major complications. Among the hemostasis-relevant variables, a history of drinking alcohol, low platelet (PLT) count, and high prothrombin time-international normalized ratio (commonly known as PT-INR) values were the statistically significant predictors of the need for longer manual compression (MC). There was no difference in the success rates between the repeat and single ExoSeal procedure groups, and repeated use of the ExoSeal did not affect hemostasis time.
CONCLUSION The ExoSeal VCD effectively achieves hemostasis, with few complications. Longer light MC may be needed with alcohol drinkers, low PLT count, and high PT-INR values.
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Affiliation(s)
- Yoonhee Han
- Department of Radiology, Dongguk University Ilsan Hospital, Goyang-si 10326, Gyeonggi-do, South Korea
| | - Jae Hyun Kwon
- Department of Radiology, Dongguk University Ilsan Hospital, Goyang-si 10326, Gyeonggi-do, South Korea
| | - Surin Park
- Department of Radiology, Dongguk University Ilsan Hospital, Goyang-si 10326, Gyeonggi-do, South Korea
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159
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Santiago FR, Muñoz PT, Pryest P, Martínez AM, Olleta NP. Role of imaging methods in diagnosis and treatment of Morton's neuroma. World J Radiol 2018; 10:91-99. [PMID: 30310543 PMCID: PMC6177560 DOI: 10.4329/wjr.v10.i9.91] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 04/26/2018] [Revised: 07/21/2018] [Accepted: 08/04/2018] [Indexed: 02/06/2023] Open
Abstract
Among the many causes of forefoot pain, Morton's neuroma (MN) is often suspected, particularly in women, due to its high incidence. However, there remain controversies about its relationship with symptomatology and which diagnostic and treatment choices to choose. This article mainly focuses on the role of the various imaging methods and their abilities to support an accurate diagnosis of MN, ruling out other causes of forefoot pain, and as a way of providing targeted imaging-guided therapy for patients with MN.
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Affiliation(s)
- Fernando Ruiz Santiago
- Radiology Department, Hospital of Neuro-Traumatology (Virgen de las Nieves), Granada 18014, Spain
| | - Pablo Tomás Muñoz
- Radiology Department, Hospital of Neuro-Traumatology (Virgen de las Nieves), Granada 18014, Spain
| | - Patel Pryest
- Radiology Department, North Tyneside General Hospital, North Shields NE29 8NH, United Kingdom
| | | | - Nicolás Prados Olleta
- Orthopaedic Department, Hospital of Neuro-Traumatology (Virgen de las Nieves), Granada 18014, Spain
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160
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Wang YT, Yan X, Pu H, Yin LL. In vivo evaluation of early renal damage in type 2 diabetic patients on 3.0 T MR diffusion tensor imaging. World J Radiol 2018; 10:83-90. [PMID: 30190800 PMCID: PMC6120998 DOI: 10.4329/wjr.v10.i8.83] [Citation(s) in RCA: 4] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/26/2018] [Accepted: 07/10/2018] [Indexed: 02/07/2023] Open
Abstract
AIM To investigate the utility of renal diffusion tensor imaging (DTI) to detect early renal damage in patients with type 2 diabetes.
METHODS Twenty-six diabetic patients (12 with microalbuminuria (MAU), and 14 with normoalbuminuria) and fourteen healthy volunteers were prospectively included in this study. Renal DTI on 3.0 T MR was performed, and estimated glomerular filtration rate (eGFR) was recorded for each subject. Mean cortical and medullary fractional anisotropy (FA) values were calculated by placing multiple representative regions of interest. Mean FA values were statistically compared among groups. Correlations between FA values and eGFR were evaluated.
RESULTS Both cortical and medullary FA were significantly reduced in diabetic patients compared to healthy controls (0.403 ± 0.064 vs 0.463 ± 0.047, P = 0.004, and 0.556 ± 0.084 vs 0.645 ± 0.076, P = 0.002, respectively). Cortical FA was significantly lower in diabetic patients with NAU than healthy controls (0.412 ± 0.068 vs 0.463 ± 0.047, P = 0.02). Medullary FA in diabetic patients with NAU and healthy controls were similar (0.582 ± 0.096 vs 0.645 ± 0.076, P = 0.06). Both cortical FA and medullary FA correlated with eGFR (r = 0.382, P = 0.015 and r = 0.552, P = 0.000, respectively).
CONCLUSION FA of renal parenchyma on DTI might serve as a more sensitive biomarker of early diabetic nephropathy than MAU.
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Affiliation(s)
- Yu-Ting Wang
- Department of Radiology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan Province, China
| | - Xiong Yan
- Department of Radiology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan Province, China
| | - Hong Pu
- Department of Radiology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan Province, China
| | - Long-Lin Yin
- Department of Radiology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan Province, China
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161
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Spanu F, Saba L. Obesity and pericallosal lipoma in X-linked emery-dreifuss muscular dystrophy: A case report - Does Emerin play a role in adipocyte differentiation? World J Radiol 2018; 10:78-82. [PMID: 30079154 PMCID: PMC6068725 DOI: 10.4329/wjr.v10.i7.78] [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: 04/24/2018] [Revised: 06/11/2018] [Accepted: 06/28/2018] [Indexed: 02/06/2023] Open
Abstract
Emery dreifuss muscular dystrophy (EDMD) is a rare genetic syndrome consisting of tendon retractions, progressive muscle atrophy and cardiac involvement. We report a case of an obese patient affected by the familial X-linked form in which a pericallosal lipoma was found during investigation for a suspected acute vasculopathy. To date, EDMD has never been associated with cerebral lipomas and the X-linked form was never considered to be involved in lipodystrophic syndromes or non-muscular conditions. Our case confirms the variable expressivity of the disease and suggests a possible role of Emerin in the intranuclear regulation of signals for adipocyte cell differentiation.
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Affiliation(s)
- Fabio Spanu
- Department of Radiology, Azienda Ospedaliero Universitaria, Cagliari 09045, Italy
| | - Luca Saba
- Department of Radiology, Azienda Ospedaliero Universitaria, Cagliari 09045, Italy
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162
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Abstract
AIM To evaluate radiological imaging findings of patients who had been found to have pineal cyst (PC) in brain magnetic resonance imaging (MRI).
METHODS A total of 9546 patients who had brain MRI examination in March 2010-January 2018 period were studied. Fifty-six patients (44 female and 12 male) found to have PC were evaluated. Eighteen of the patients had had follow-up examinations of 2-94 mo (mean 30.50 ± 28.83). PC dimensions and volume, radiological imaging features (signal intensities, contours, internal septation-loculation and contrast-enhancement features) and natural history in cases who had been followed-up were evaluated by two radiologists.
RESULTS Of 9546 patients, 5555 were female (58.2%) and 3991 male (41.8%). Age range was 1-99 (mean 43.18 ± 20.94). PC frequency was calculated to be 0.58%. Forty-four of the 56 patients (78.57%) with PC were female and 12 male (21.43%), and their age range was 5-61 (mean 31.26 ± 12.73). Thirty-five of the PCs were typical (62.50%) and 21 (37.50%) were atypical. No significant difference was found between initial and final imaging sizes of PCs which were monitored by follow-up examinations (P > 0.05).
CONCLUSION PCs are cysts which do not show clear size and natural changes and are more frequently observed in females and in adult ages. Most of them are isointense with cerebrospinal fluid on T1 and T2A weighted images, hyperintense compared to cerebrospinal fluid on fluid-attenuated inversion recovery; sequence and smoothly contoured. Their typical forms have peripheral rim and multilocular ones may have septal contrast-enhancement.
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Affiliation(s)
- Erkan Gokce
- Department of Radiology, Gaziosmanpaşa University, School of Medicine, Tokat 60100, Turkey
| | - Murat Beyhan
- Department of Radiology, Tokat State Hospital, Tokat 60100, Turkey
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163
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Tsuchiya N, Beek EJRV, Ohno Y, Hatabu H, Kauczor HU, Swift A, Vogel-Claussen J, Biederer J, Wild J, Wielpütz MO, Schiebler ML. Magnetic resonance angiography for the primary diagnosis of pulmonary embolism: A review from the international workshop for pulmonary functional imaging. World J Radiol 2018; 10:52-64. [PMID: 29988845 PMCID: PMC6033703 DOI: 10.4329/wjr.v10.i6.52] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 04/25/2018] [Accepted: 05/30/2018] [Indexed: 02/06/2023] Open
Abstract
Pulmonary contrast enhanced magnetic resonance angiography (CE-MRA) is useful for the primary diagnosis of pulmonary embolism (PE). Many sites have chosen not to use CE-MRA as a first line of diagnostic tool for PE because of the speed and higher efficacy of computerized tomographic angiography (CTA). In this review, we discuss the strengths and weaknesses of CE-MRA and the appropriate imaging scenarios for the primary diagnosis of PE derived from our unique multi-institutional experience in this area. The optimal patient for this test has a low to intermediate suspicion for PE based on clinical decision rules. Patients in extremis are not candidates for this test. Younger women (< 35 years of age) and patients with iodinated contrast allergies are best served by using this modality We discuss the history of the use of this test, recent technical innovations, artifacts, direct and indirect findings for PE, ancillary findings, and the effectiveness (patient outcomes) of CE-MRA for the exclusion of PE. Current outcomes data shows that CE-MRA and NM V/Q scans are effective alternative tests to CTA for the primary diagnosis of PE.
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Affiliation(s)
- Nanae Tsuchiya
- Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Okinawa 903-0215, Japan
- Department of Radiology, University of Wisconsin-Madison, Madison, WI 53792, United States
| | - Edwin JR van Beek
- Edinburgh Imaging, Queen’s Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Yoshiharu Ohno
- Division of Functional and Diagnostic Imaging Research, Department of Radiology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Hiroto Hatabu
- Department of Radiology, Brigham and Women’s Hospital, Boston, MA 02115, United States
| | - Hans-Ulrich Kauczor
- Department of Diagnostic and Interventional Radiology, University Hospital of Heidelberg, Heidelberg 69120, Germany
| | - Andrew Swift
- Department of Radiology, Royal Hallamshire Hospital, University of Sheffield, Sheffield S10 2JF, United Kingdom
| | - Jens Vogel-Claussen
- Department of Radiology, Carl-Neuberg Strasse 1, Hannover-Gr-Buchholz 30625, Germany
| | - Jürgen Biederer
- Radiology Darmstadt, Gross-Gerau County Hospital, Gross-Gerau 64521, Germany
| | - James Wild
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield S10 2JF, United Kingdom
| | - Mark O Wielpütz
- Department of Diagnostic and Interventional Radiology, University Hospital of Heidelberg, Heidelberg 69120, Germany
| | - Mark L Schiebler
- Department of Radiology, University of Wisconsin-Madison, Madison, WI 53792, United States
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164
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Fischetti A, Zawaideh JP, Orlandi D, Belfiore S, SIlvestri E. Traumatic peroneal split lesion with retinaculum avulsion: Diagnosis and post-operative multymodality imaging. World J Radiol 2018; 10:46-51. [PMID: 29876022 PMCID: PMC5985235 DOI: 10.4329/wjr.v10.i5.46] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 04/23/2018] [Accepted: 05/23/2018] [Indexed: 02/06/2023] Open
Abstract
Tears of peroneus brevis tendon represent a cause of underdiagnosed lateral ankle pain and instability. The typical clinical presentation is retro-malleolar pain, in some cases associated with palpable swelling around the fibular malleolus, pain during activities and difficulty in walking. We present a case of peroneus brevis split lesion with superior peroneal retinaculum avulsion in a young athlete who referred to the emergency ward of our hospital for left ankle pain after an inversion injury. An early diagnosis allowed treating the injury and promptly resuming sport activity, after rehabilitation training. Surgical reconstruction key-points and post-surgical follow-up were also discussed. A late diagnosis would have caused a symptomatology worsening and an increased recovery time.
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Affiliation(s)
- Aldo Fischetti
- Department of Health Sciences (DISSAL), Radiology Section, University of Genoa, Genoa 16100, Italy
| | - Jeries P Zawaideh
- Department of Health Sciences (DISSAL), Radiology Section, University of Genoa, Genoa 16100, Italy
| | - Davide Orlandi
- Radiology Department, Ospedale Evangelico Internazionale, Genova 16122, Italy
| | - Stefano Belfiore
- Orthopedic and Trauma Department, Ospedale Evangelico Internazionale, Genova 16122, Italy
| | - Enzo SIlvestri
- Radiology Department, Ospedale Evangelico Internazionale, Genova 16122, Italy
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165
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Halefoglu AM, Yousem DM. Susceptibility weighted imaging: Clinical applications and future directions. World J Radiol 2018; 10:30-45. [PMID: 29849962 PMCID: PMC5971274 DOI: 10.4329/wjr.v10.i4.30] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [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: 03/17/2018] [Revised: 04/08/2018] [Accepted: 04/20/2018] [Indexed: 02/06/2023] Open
Abstract
Susceptibility weighted imaging (SWI) is a recently developed magnetic resonance imaging (MRI) technique that is increasingly being used to narrow the differential diagnosis of many neurologic disorders. It exploits the magnetic susceptibility differences of various compounds including deoxygenated blood, blood products, iron and calcium, thus enabling a new source of contrast in MR. In this review, we illustrate its basic clinical applications in neuroimaging. SWI is based on a fully velocity-compensated, high-resolution, three dimensional gradient-echo sequence using magnitude and phase images either separately or in combination with each other, in order to characterize brain tissue. SWI is particularly useful in the setting of trauma and acute neurologic presentations suggestive of stroke, but can also characterize occult low-flow vascular malformations, cerebral microbleeds, intracranial calcifications, neurodegenerative diseases and brain tumors. Furthermore, advanced MRI post-processing technique with quantitative susceptibility mapping, enables detailed anatomical differentiation based on quantification of brain iron from SWI raw data.
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Affiliation(s)
- Ahmet Mesrur Halefoglu
- Department of Radiology, Sisli Hamidiye Etfal Training and Research Hospital, University of Health Sciences, Istanbul 34371, Turkey
| | - David Mark Yousem
- Division of Neuroradiology, Department of Radiology, Johns Hopkins Medical Institution, Baltimore, MI 21287, United States
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166
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Kaufman AE, Pruzan AN, Hsu C, Ramachandran S, Jacobi A, Fayad ZA, Mani V. Effect of varying computed tomography acquisition and reconstruction parameters on semi-automated clot volume quantification. World J Radiol 2018; 10:24-29. [PMID: 29599936 PMCID: PMC5872394 DOI: 10.4329/wjr.v10.i3.24] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/14/2018] [Accepted: 03/20/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To examine effects of computed tomography (CT) image acquisition/reconstruction parameters on clot volume quantification in vitro for research method validation purposes.
METHODS This study was performed in conformance with HIPAA and IRB Regulations (March 2015-November 2016). A ten blood clot phantom was designed and scanned on a dual-energy CT scanner (SOMATOM Force, Siemens Healthcare GmBH, Erlangen, Germany) with varying pitch, iterative reconstruction, energy level and slice thickness. A range of clot and tube sizes were used in an attempt to replicate in vivo emboli found within central and segmental branches of the pulmonary arteries in patients with pulmonary emboli. Clot volume was the measured parameter and was analyzed by a single image analyst using a semi-automated region growing algorithm implemented in the FDA-approved Siemens syngo.via image analysis platform. Mixed model analysis was performed on the data.
RESULTS On the acquisition side, the continuous factor of energy showed no statistically significant effect on absolute clot volume quantification (P = 0.9898). On the other hand, when considering the fixed factor of pitch, there were statistically significant differences in clot volume quantification (P < 0.0001). On the reconstruction side, with the continuous factor of reconstruction slice thickness no statistically significant effect on absolute clot volume quantification was demonstrated (P = 0.4500). Also on the reconstruction side, with the fixed factor of using iterative reconstructions there was also no statistically significant effect on absolute clot volume quantification (P = 0.3011). In addition, there was excellent R2 correlation between the scale-measured mass of the clots both with respect to the CT measured volumes and with respect to volumes measure by the water displacement method.
CONCLUSION Aside from varying pitch, changing CT acquisition parameters and using iterative reconstructions had no significant impact on clot volume quantification with a semi-automated region growing algorithm.
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Affiliation(s)
- Audrey E Kaufman
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
| | - Alison N Pruzan
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
| | - Ching Hsu
- Daiichi Sankyo Inc., Basking Ridge, NJ 07920, United States
| | - Sarayu Ramachandran
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
| | - Adam Jacobi
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
| | - Zahi A Fayad
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
| | - Venkatesh Mani
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, Hess Center for Science and Medicine, New York, NY 10029, United States
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167
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Campos-Correia D, Cruz J, Matos AP, Figueiredo F, Ramalho M. Magnetic resonance imaging ancillary features used in Liver Imaging Reporting and Data System: An illustrative review. World J Radiol 2018; 10:9-23. [PMID: 29507710 PMCID: PMC5829459 DOI: 10.4329/wjr.v10.i2.9] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 02/07/2018] [Accepted: 02/25/2018] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) usually develops in the setting of chronic liver disease. In the adequate clinical context, both multiphasic contrast-enhanced CT and magnetic resonance imaging are non-invasive modalities that allow accurate diagnosis and staging of HCC, although the latter demonstrates greater sensitivity and specificity. Imaging criteria for HCC diagnosis rely on hemodynamic features such as hyperenhancement in the arterial phase and washout in the portal or equilibrium phase. However, imaging performance drops considerably for small (< 20 mm) nodules because their tendency to exhibit atypical enhancement patterns. In order to improve accuracy in the diagnosis and staging of HCC, particularly in cases of atypical nodules, ancillary features, i.e., imaging characteristics that modify the likelihood of HCC, have been described and incorporated into clinical reports, especially in Liver Imaging Reporting and Data System. In this paper, ancillary imaging features will be reviewed and illustrated.
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Affiliation(s)
- David Campos-Correia
- Department of Radiology, Centro Hospitalar de Lisboa Ocidental, Lisbon 1349-019, Portugal
| | - João Cruz
- Department of Radiology, Hospital Garcia de Orta, Almada 2805-267, Portugal
| | - António P Matos
- Department of Radiology, Hospital Garcia de Orta, Almada 2805-267, Portugal
| | - Filipa Figueiredo
- Department of Radiology, Hospital Garcia de Orta, Almada 2805-267, Portugal
| | - Miguel Ramalho
- Department of Radiology, Hospital Garcia de Orta, Almada 2805-267, Portugal
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168
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Jensen-Kondering U, Böhm R. Correction to “Asymmetrically hypointense veins on T2*w imaging and susceptibility-weighted imaging in ischemic stroke” [ World J Radiol 2013; 5(4): 156-165]. World J Radiol 2018; 10:7-8. [PMID: 29403580 PMCID: PMC5789379 DOI: 10.4329/wjr.v10.i1.7] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 12/25/2017] [Accepted: 01/26/2018] [Indexed: 02/06/2023] Open
Affiliation(s)
- Ulf Jensen-Kondering
- Institute of Neuroradiology, University of Schleswig-Holstein, Campus Kiel, Kiel 24105, Germany
| | - Ruwen Böhm
- Institute of Experimental and Clinical Pharmacology, University of Schleswig-Holstein, Campus Kiel, Kiel 24105, Germany
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169
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Delko T, Mattiello D, Koestler T, Zingg U, Potthast S. Computed tomography as primary postoperative follow-up after laparoscopic Roux-en-Y gastric bypass. World J Radiol 2018; 10:1-6. [PMID: 29403579 PMCID: PMC5789378 DOI: 10.4329/wjr.v10.i1.1] [Citation(s) in RCA: 4] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/05/2018] [Accepted: 01/26/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate upper abdominal computed tomography (CT) scan as primary follow-up after laparoscopic Roux-en-Y gastric bypass (LRYGB).
METHODS This prospective study was approved by the Ethical Committee of the State of Zurich, and informed consent was obtained from all patients. Sixty-one patients who underwent LRYGB received upper abdominal CT on postoperative day 1, with the following scan parameters: 0.6 mm collimation, 1.2 mm pitch, CareKV with reference 120 mAs and 120 kV, and 0.5 s rotation time. Diluted water-soluble radiographic contrast-medium (50 mL) was administered to achieve gastric pouch distension without movement of the patient. 3D images were evaluated to assess postoperative complications and the radiation dose received was analysed.
RESULTS From the 70 patients initially enrolled in the study, 9 were excluded from analysis upon the intraoperative decision to perform a sleeve gastrectomy and not a LRYGB. In all of the 61 patients who were included in the analysis, CT was feasible and there were no instances of aspiration or vomiting. In 7 patients, two upper abdominal scans were necessary as the pouch was not distended by contrast medium in the first acquisition. Radiologically, no leak and no relevant stenosis were found on the first postoperative day. These early postoperative CT findings were consistent with the findings at clinical follow-up 6 wk postoperatively, with no leaks, stenosis or obstructions being diagnosed. The average total dose length product in CT was 536.6 mGycm resulting in an average effective dose of 7.8 mSv. The most common surgical complication, superficial surgical site infections (n = 4), always occurred at the upper left trocar site, where the circular stapler had been introduced.
CONCLUSION Early LRYGB postoperative multislice spiral CT scan is feasible, with low morbidity, and provides more accurate anatomical information than standard upper gastrointestinal contrast study.
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Affiliation(s)
- Tarik Delko
- Department of Surgery, University Hospital Basel, Basel 4031, Switzerland
| | - Diana Mattiello
- Department of Surgery, Limmattal Hospital, Schlieren 8952, Switzerland
| | - Thomas Koestler
- Department of Surgery, Limmattal Hospital, Schlieren 8952, Switzerland
| | - Urs Zingg
- Department of Surgery, Limmattal Hospital, Schlieren 8952, Switzerland
| | - Silke Potthast
- Department of Radiology, Limmattal Hospital, Schlieren 8952, Switzerland
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170
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Mahajan A, Santhoshkumar GV, Kawthalkar AS, Vaish R, Sable N, Arya S, Desai S. Case of victims of modern imaging technology: Increased information noise concealing the diagnosis. World J Radiol 2017; 9:454-458. [PMID: 29354211 PMCID: PMC5746649 DOI: 10.4329/wjr.v9.i12.454] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 09/13/2017] [Revised: 11/02/2017] [Accepted: 11/28/2017] [Indexed: 02/06/2023] Open
Abstract
We present a case of tubercular arthritis who underwent numerous unnecessary investigations what is known as “victims of modern imaging technology” or VOMIT. Today there is an exponential rise in the volume of the medical imaging, part of which is contributed by unnecessary and unjustified indications. We discuss about the untoward effects of the uninhibited and careless use of modern imaging modalities and possible ways to avoid. Skeletal manifestation of the tuberculosis is still common in the endemic countries like India. Although the final diagnosis of the skeletal tuberculosis like tubercular arthritis is made by bacteriological and histological studies, few demographic, clinical and radiological features might help making early diagnosis.
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Affiliation(s)
- Abhishek Mahajan
- Department of Radiodiagnosis and Imaging, Tata Memorial Hospital, Mumbai 400012, India
| | - G V Santhoshkumar
- Department of Radiodiagnosis and Imaging, Tata Memorial Hospital, Mumbai 400012, India
| | | | - Richa Vaish
- Department of Radiodiagnosis and Imaging, Tata Memorial Hospital, Mumbai 400012, India
| | - Nilesh Sable
- Department of Radiodiagnosis and Imaging, Tata Memorial Hospital, Mumbai 400012, India
| | - Supreeta Arya
- Department of Radiodiagnosis and Imaging, Tata Memorial Hospital, Mumbai 400012, India
| | - Subhash Desai
- Department of Radiodiagnosis and Imaging, Tata Memorial Hospital, Mumbai 400012, India
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171
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Nosher JL, Patel A, Jagpal S, Gribbin C, Gendel V. Endovascular treatment of pulmonary embolism: Selective review of available techniques. World J Radiol 2017; 9:426-437. [PMID: 29354208 PMCID: PMC5746646 DOI: 10.4329/wjr.v9.i12.426] [Citation(s) in RCA: 18] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/11/2017] [Accepted: 09/04/2017] [Indexed: 02/06/2023] Open
Abstract
Acute pulmonary embolism (PE) is the third most common cause of death in hospitalized patients. The development of sophisticated diagnostic and therapeutic modalities for PE, including endovascular therapy, affords a certain level of complexity to the treatment of patients with this important clinical entity. Furthermore, the lack of level I evidence for the safety and effectiveness of catheter directed therapy brings controversy to a promising treatment approach. In this review paper, we discuss the pathophysiology and clinical presentation of PE, review the medical and surgical treatment of the condition, and describe in detail the tools that are available for the endovascular therapy of PE, including mechanical thrombectomy, suction thrombectomy, and fibrinolytic therapy. We also review the literature available to date on these methods, and describe the function of the Pulmonary Embolism Response Team.
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Affiliation(s)
- John L Nosher
- Division of Interventional Radiology, Department of Radiology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08901, United States
| | - Arjun Patel
- Division of Interventional Radiology, Department of Radiology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08901, United States
| | - Sugeet Jagpal
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08901, United States
| | - Christopher Gribbin
- Division of Interventional Radiology, Department of Radiology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08901, United States
| | - Vyacheslav Gendel
- Division of Interventional Radiology, Department of Radiology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ 08901, United States
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172
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Gavito-Higuera J, Khatri R, Qureshi IA, Maud A, Rodriguez GJ. Aggressive blood pressure treatment of hypertensive intracerebral hemorrhage may lead to global cerebral hypoperfusion: Case report and imaging perspective. World J Radiol 2017; 9:448-453. [PMID: 29354210 PMCID: PMC5746648 DOI: 10.4329/wjr.v9.i12.448] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 08/22/2017] [Accepted: 11/30/2017] [Indexed: 02/06/2023] Open
Abstract
Hypoperfusion injury related to blood pressure decrease in acute hypertensive intracerebral hemorrhage continues to be a controversial topic. Aggressive treatment is provided with the intent to stop the ongoing bleeding. However, there may be additional factors, including autoregulation and increased intracranial pressure, that may limit this approach. We present here a case of acute hypertensive intracerebral hemorrhage, in which aggressive blood pressure management to levels within the normal range led to global cerebral ischemia within multiple border zones. Global cerebral ischemia may be of concern in the management of hypertensive hemorrhage in the presence of premorbid poorly controlled blood pressure and increased intracranial pressure.
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Affiliation(s)
- Jose Gavito-Higuera
- Department of Neurology, Paul L. Foster School of Medicine, Texas Tech University of Health Sciences Center, El Paso, TX 79905, United States
| | - Rakesh Khatri
- Department of Neurology, Paul L. Foster School of Medicine, Texas Tech University of Health Sciences Center, El Paso, TX 79905, United States
| | - Ihtesham A Qureshi
- Department of Neurology, Paul L. Foster School of Medicine, Texas Tech University of Health Sciences Center, El Paso, TX 79905, United States
| | - Alberto Maud
- Department of Neurology, Paul L. Foster School of Medicine, Texas Tech University of Health Sciences Center, El Paso, TX 79905, United States
| | - Gustavo J Rodriguez
- Department of Neurology, Paul L. Foster School of Medicine, Texas Tech University of Health Sciences Center, El Paso, TX 79905, United States
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Chia E, Babawale SN. Imaging features of intrathoracic complications of lung transplantation: What the radiologists need to know. World J Radiol 2017; 9:438-447. [PMID: 29354209 PMCID: PMC5746647 DOI: 10.4329/wjr.v9.i12.438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 07/02/2017] [Revised: 08/21/2017] [Accepted: 11/08/2017] [Indexed: 02/06/2023] Open
Abstract
Lung transplantation has been a method for treating end stage lung disease for decades. Despite improvements in the preoperative assessment of recipients and donors as well as improved surgical techniques, lung transplant recipients are still at a high risk of developing post-operative complications which tend to impact negatively the patients’ outcome if not recognised early. The recognised complications post lung transplantation can be broadly categorised into acute and chronic complications. Recognising the radiological features of these complications has a significant positive impact on patients’ survival post transplantation. This manuscript provides a comprehensive review of the radiological features of post lung transplantations complications over a time continuum.
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Affiliation(s)
- Elisa Chia
- Department of Radiology, Royal Perth Hospital, Wellington Street Campus, Perth, WA 6001, Australia
| | - Simeon Niyi Babawale
- Department of Radiology, Royal Perth Hospital, Wellington Street Campus, Perth, WA 6001, Australia
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174
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Mazaheri Y, Akin O, Hricak H. Dynamic contrast-enhanced magnetic resonance imaging of prostate cancer: A review of current methods and applications. World J Radiol 2017; 9:416-425. [PMID: 29354207 PMCID: PMC5746645 DOI: 10.4329/wjr.v9.i12.416] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 05/17/2017] [Revised: 08/03/2017] [Accepted: 10/17/2017] [Indexed: 02/06/2023] Open
Abstract
In many areas of oncology, dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) has proven to be a clinically useful, non-invasive functional imaging technique to quantify tumor vasculature and tumor perfusion characteristics. Tumor angiogenesis is an essential process for tumor growth, proliferation, and metastasis. Malignant lesions demonstrate rapid extravasation of contrast from the intravascular space to the capillary bed due to leaky capillaries associated with tumor neovascularity. DCE-MRI has the potential to provide information regarding blood flow, areas of hypoperfusion, and variations in endothelial permeability and microvessel density to aid treatment selection, enable frequent monitoring during treatment and assess response to targeted therapy following treatment. This review will discuss the current status of DCE-MRI in cancer imaging, with a focus on its use in imaging prostate malignancies as well as weaknesses that limit its widespread clinical use. The latest techniques for quantification of DCE-MRI parameters will be reviewed and compared.
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Affiliation(s)
- Yousef Mazaheri
- Department of Medical Physics and Radiology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, United States
| | - Oguz Akin
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, United States
| | - Hedvig Hricak
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, United States
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175
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Turan HG, Özdemir M, Acu R, Küçükay F, Özdemir FAE, Hekimoğlu B, Yıldırım UM. Comparison of seldinger and trocar techniques in the percutaneous treatment of hydatid cysts. World J Radiol 2017; 9:405-412. [PMID: 29225737 PMCID: PMC5714805 DOI: 10.4329/wjr.v9.i11.405] [Citation(s) in RCA: 6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 05/09/2017] [Accepted: 06/13/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To comparatively evaluate Seldinger and Trocar techniques in the percutaneous treatment of hydatid disease.
METHODS Trocar and Seldinger techniques were used for 49 and 56 cysts, respectively, among 106 hydatid cysts in 88 patients. The number of males and females were 22 and 66, respectively with a mean age of 44.9 years (range, 15-87). Follow-up studies included cyst diameter, cyst contents, and morphological changes in the cyst wall, local recurrence, and secondary invasion, using ultrasound, computerized tomography and chest X-rays.
RESULTS The positive criteria of healing were a decrease in cyst diameter, progressive solidification of the cyst contents, and disappearance of the cyst. Local recurrence was defined as an increase in the cyst diameter and contents, and appearance of daughter cysts in the primary cavity, while secondary dissemination was defined as the appearance of new cysts outside the treated cyst. Mean duration of follow-up was 19.23 mo (range, 18-26 mo). Follow-up results demonstrated that no significant differences were present between the Trocar and Seldinger techniques in the percentage of decrease in the cyst volume, rate of early complications, local recurrence and secondary dissemination (P = 0.384, 0.069, 0.215 and 0.533, respectively).
CONCLUSION There are no differences between the Seldinger and Trocar techniques that gain entry to the cyst cavity in terms of the efficacy of the treatment and the rates of early and late complications.
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Affiliation(s)
| | - Mustafa Özdemir
- Department of Interventional Radiology, Türkiye Yüksek İhtisas Hospital, Ankara 06230, Turkey
| | - Ruşen Acu
- Department of Radiology, Batman Bölge Hospital, Batman 72070, Turkey
| | - Fahrettin Küçükay
- Department of Interventional Radiology, Eskişehir Osman Gazi University, Eskişehir 26030, Turkey
| | - Fatma Ayça Edis Özdemir
- Department of Interventional Radiology, Türkiye Yüksek İhtisas Hospital, Ankara 06230, Turkey
| | - Baki Hekimoğlu
- Department of Interventional Radiology, Dışkapı Education And Research Hospital, Ankara 06110, Turkey
| | - Utku Mahir Yıldırım
- Department of Interventional Radiology, İzmir University Hospital, Ankara 35575, Turkey
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176
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Riddel N, Thoufeeq MH. Naso-jejunal tube insertion - interface between radiology and endoscopy. World J Radiol 2017; 9:413-415. [PMID: 29225738 PMCID: PMC5714806 DOI: 10.4329/wjr.v9.i11.413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 07/15/2017] [Accepted: 08/02/2017] [Indexed: 02/06/2023] Open
Abstract
A survey was performed to identify the practice associated with endoscopic placement of naso-jejunal (NJ) tubes. We had a total of 236 responses, of which 228 responded to the frequency of requesting X-ray after placing NJ tubes. The responses suggested that there was a strong variation in the practice. The practice was independent on clinicians’ area of interest, hospital setting or experience in endoscopy. Currently there are no accepted guidelines on this. Hence, we advise hospitals to have robust local guidelines until there is internationally agreed consensus.
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Affiliation(s)
- Naomi Riddel
- Peterborough Hospitals NHS Trust, Peterborough PE3 9GZ, United Kingdom
| | - Mo Hameed Thoufeeq
- Department of Endoscopy, Sheffield Teaching Hospitals, Sheffield S5 7AU, United Kingdom
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177
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Mormina E, Petracca M, Bommarito G, Piaggio N, Cocozza S, Inglese M. Cerebellum and neurodegenerative diseases: Beyond conventional magnetic resonance imaging. World J Radiol 2017; 9:371-388. [PMID: 29104740 PMCID: PMC5661166 DOI: 10.4329/wjr.v9.i10.371] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 01/27/2017] [Revised: 07/18/2017] [Accepted: 08/02/2017] [Indexed: 02/06/2023] Open
Abstract
The cerebellum plays a key role in movement control and in cognition and cerebellar involvement is described in several neurodegenerative diseases. While conventional magnetic resonance imaging (MRI) is widely used for brain and cerebellar morphologic evaluation, advanced MRI techniques allow the investigation of cerebellar microstructural and functional characteristics. Volumetry, voxel-based morphometry, diffusion MRI based fiber tractography, resting state and task related functional MRI, perfusion, and proton MR spectroscopy are among the most common techniques applied to the study of cerebellum. In the present review, after providing a brief description of each technique’s advantages and limitations, we focus on their application to the study of cerebellar injury in major neurodegenerative diseases, such as multiple sclerosis, Parkinson’s and Alzheimer’s disease and hereditary ataxia. A brief introduction to the pathological substrate of cerebellar involvement is provided for each disease, followed by the review of MRI studies exploring structural and functional cerebellar abnormalities and by a discussion of the clinical relevance of MRI measures of cerebellar damage in terms of both clinical status and cognitive performance.
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Affiliation(s)
- Enricomaria Mormina
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Neuroradiology Unit, Department of Biomedical Sciences and Morphological and Functional Images, University of Messina, 98100 Messina, Italy
| | - Maria Petracca
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Department of Neuroscience, Reproductive Sciences and Odontostomatology, University of Naples Federico II, 80138 Naples, Italy
| | - Giulia Bommarito
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, 16132 Genoa, Italy
| | - Niccolò Piaggio
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, 16132 Genoa, Italy
- Department of Neuroradiology, San Martino Hospital, 16132 Genoa, Italy
| | - Sirio Cocozza
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Department of Advanced Biomedical Sciences, University of Naples Federico II, 80138 Naples, Italy
| | - Matilde Inglese
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, United States
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, 16132 Genoa, Italy
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178
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Aggarwal A, Jana M, Kumar V, Srivastava DN, Garg K. MR neurography in intraosseous median nerve entrapment. World J Radiol 2017; 9:400-404. [PMID: 29104742 PMCID: PMC5661168 DOI: 10.4329/wjr.v9.i10.400] [Citation(s) in RCA: 6] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 05/08/2017] [Accepted: 07/10/2017] [Indexed: 02/07/2023] Open
Abstract
Intraosseous entrapment of the median nerve is an uncommon complication of elbow dislocation and fractures. The condition is seen to occur in adolescent age group with a remote history of trauma. We report two rare cases of type 2 intraosseous median nerve entrapment. Though the diagnosis of median neuropathy is made with clinical tests and neurophysiological studies, however exact site of entrapment and presurgical mapping of nerve is done accurately with MR neurography. Imaging thus plays a pivotal role in management of this condition.
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Affiliation(s)
- Ankita Aggarwal
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Manisha Jana
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Vijay Kumar
- Department of Orthopedics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Deep Narayan Srivastava
- Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Kanwaljeet Garg
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi 110029, India
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179
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Zarzour JG, Galgano S, McConathy J, Thomas JV, Rais-Bahrami S. Lymph node imaging in initial staging of prostate cancer: An overview and update. World J Radiol 2017; 9:389-399. [PMID: 29104741 PMCID: PMC5661167 DOI: 10.4329/wjr.v9.i10.389] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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: 02/09/2017] [Revised: 05/26/2017] [Accepted: 07/17/2017] [Indexed: 02/06/2023] Open
Abstract
Accurate nodal staging at the time of diagnosis of prostate cancer is crucial in determining a treatment plan for the patient. Pelvic lymph node dissection is the most reliable method, but is less than perfect and has increased morbidity. Cross sectional imaging with computed tomography (CT) and magnetic resonance imaging (MRI) are non-invasive tools that rely on morphologic characteristics such as shape and size of the lymph nodes. However, lymph nodes harboring metastatic disease may be normal sized and non-metastatic lymph nodes may be enlarged due to reactive hyperplasia. The optimal strategy for preoperative staging remains a topic of ongoing research. Advanced imaging techniques to assess lymph nodes in the setting of prostate cancer utilizing novel MRI contrast agents as well as positron emission tomography (PET) tracers have been developed and continue to be studied. Magnetic resonance lymphography utilizing ultra-small super paramagnetic iron oxide has shown promising results in detection of metastatic lymph nodes. Combining MRL with diffusion-weighted imaging may also improve accuracy. Considerable efforts are being made to develop effective PET radiotracers that are performed using hybrid-imaging systems that combine PET with CT or MRI. PET tracers that will be reviewed in this article include [18F]fluoro-D-glucose, sodium [18F]fluoride, [18F]choline, [11C]choline, prostate specific membrane antigen binding ligands, [11C]acetate, [18F]fluciclovine, gastrin releasing peptide receptor ligands, and androgen binding receptors. This article will review these advanced imaging modalities and ability to detect prostate cancer metastasis to lymph nodes. While more research is needed, these novel techniques to image lymph nodes in the setting of prostate cancer show a promising future in improving initial lymph node staging.
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Affiliation(s)
- Jessica G Zarzour
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35249, United States
| | - Sam Galgano
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35249, United States
| | - Jonathan McConathy
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35249, United States
| | - John V Thomas
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35249, United States
| | - Soroush Rais-Bahrami
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL 35249, United States
- Department of Urology, University of Alabama at Birmingham, Birmingham, AL 35249, United States
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180
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Chetan MR, Barrett T, Gallagher FA. Clinical significance of prostate 18F-labelled fluorodeoxyglucose uptake on positron emission tomography/computed tomography: A five-year review. World J Radiol 2017; 9:350-358. [PMID: 29098068 PMCID: PMC5658630 DOI: 10.4329/wjr.v9.i9.350] [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] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 02/20/2017] [Accepted: 03/21/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To determine the significance and need for investigation of incidental prostatic uptake in men undergoing 18F-labelled fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) for other indications. METHODS Hospital databases were searched over a 5-year period for patients undergoing both PET/CT and prostate magnetic resonance imaging (MRI). For the initial analysis, the prostate was divided into six sectors and suspicious or malignant sectors were identified using MRI and histopathology reports respectively. Maximum and mean 18F-FDG standardised uptake values were measured in each sector by an investigator blinded to the MRI and histopathology findings. Two age-matched controls were selected per case. Results were analysed using a paired t-test and one-way ANOVA. For the second analysis, PET/CT reports were searched for prostatic uptake reported incidentally and these patients were followed up. RESULTS Over a 5-year period, 15 patients underwent both PET/CT and MRI and had biopsy-proven prostate cancer. Malignant prostatic sectors had a trend to higher 18F-FDG uptake than benign sectors, however this was neither clinically nor statistically significant (3.13 ± 0.58 vs 2.86 ± 0.68, P > 0.05). 18F-FDG uptake showed no correlation with the presence or histopathological grade of tumour. 18F-FDG uptake in cases with prostate cancer was comparable to that from age-matched controls. Forty-six (1.6%) of 2846 PET/CTs over a 5-year period reported incidental prostatic uptake. Of these, 18 (0.6%) were investigated by PSA, 9 (0.3%) were referred to urology, with 3 (0.1%) undergoing MRI and/or biopsy. No cases of prostate cancer were diagnosed in patients with incidental 18F-FDG uptake in our institute over a 5-year period. CONCLUSION 18F-FDG uptake overlaps significantly between malignant and benign prostatic conditions. Subsequent patient management was not affected by the reporting of incidental focal prostatic uptake in this cohort.
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Affiliation(s)
- Madhurima R Chetan
- School of Clinical Medicine, University of Cambridge, Cambridge CB2 0SP, United Kingdom
| | - Tristan Barrett
- Department of Radiology, Addenbrooke’s Hospital and University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Ferdia A Gallagher
- Department of Radiology, Addenbrooke’s Hospital and University of Cambridge, Cambridge CB2 0QQ, United Kingdom
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181
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Engin G, Eraslan S, Kayserili H, Kapran Y, Akman H, Akyuz A, Aykan NF. Imatinib response of gastrointestinal stromal tumor patients with germline mutation on KIT exon 13: A family report. World J Radiol 2017; 9:365-370. [PMID: 29098070 PMCID: PMC5658632 DOI: 10.4329/wjr.v9.i9.365] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 06/24/2017] [Accepted: 08/02/2017] [Indexed: 02/06/2023] Open
Abstract
Familial gastrointestinal stromal tumor (GIST) is a rare autosomal dominant disorder associated with mutations in the KIT gene in the majority of cases. Although, exon 11 appears to be the hot spot region for approximately 95% of germline mutations, pathogenic variations have also been identified in exon 8, 13 and 17. Exon 13 germline mutations are extremely rare amongst familial GISTs and seven families with a germline mutation have been reported to date. Moreover, the role of imatinib mesylate in this rare familiar settings is not completely known so far. We describe here clinical, imaging, pathological and genetic findings of a family with four affected members; grandmother, his son and two grand-sons having a germline gain-of-function mutation of KIT in exon 13 and discuss the imatinib mesylate treatment surveillance outcomes towards disease management.
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Affiliation(s)
- Gulgun Engin
- Oncology Institute, Istanbul University, 34390 Capa, Istanbul, Turkey
| | - Serpil Eraslan
- Medical Genetics Department, Koç University, School of Medicine (KUSoM), 34010 Topkapı, Istanbul, Turkey
| | - Hülya Kayserili
- Medical Genetics Department, Koç University, School of Medicine (KUSoM), 34010 Topkapı, Istanbul, Turkey
| | - Yersu Kapran
- Pathology Department, Koç University, School of Medicine (KUSoM), 34010 Topkapı, Istanbul, Turkey
| | - Haluk Akman
- International Hospital, Yesilkoy, 34662 Bakirkoy, Istanbul, Turkey
| | - Ali Akyuz
- Acıbadem University, Acıbadem International Hospital, 34149 Bakirkoy, Istanbul, Turkey
| | - Nuri Faruk Aykan
- Istinye University, Liv Hospital, 34510 Esenyurt, Istanbul, Turkey
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182
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Nouh MR, El-Shazly MA. Radiographic and magnetic resonances contrast agents: Essentials and tips for safe practices. World J Radiol 2017; 9:339-349. [PMID: 29098067 PMCID: PMC5658629 DOI: 10.4329/wjr.v9.i9.339] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 06/14/2017] [Accepted: 06/20/2017] [Indexed: 02/06/2023] Open
Abstract
With extended and continued expansion of medical imaging utilization in modern medical practice over last decade, radiologists as well as other faculty staff dealing with radiographic and magnetic resonances contrast media (CM) have to be well oriented with their potential hypersensitivity reactions and recognize high-risk groups liable to develop it and enable early recognition. Radiologists and other medical staff involved in administration and dealing with CM have to be ready to implement prompt, practical and effective management plan to deal with these scenarios should they emerge. Strategies to prevent potential contrast-induced acute and delayed renal injuries have to be routinely exercised. Paying attention to the pregnant and nursing women, pediatrics, diabetics, as well as other fragile populations is of utmost importance for patient safety during contrast administrations. Radiologists should play a pivotal role in orienting patients about necessity to use CM for their imaging studies, in case it is needed, and assure them about its safety. Moreover, they have to be oriented with the medico-legal issues related to use of CM. These will pay as improved patient safety as well as safe daily working environmentat different levels of radiology practices.
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Affiliation(s)
- Mohamed R Nouh
- Department of Radiology and Clinical Imaging, Faculty of Medicine, Alexandria University, Alexandria 21563, Egypt
| | - Mohamed A El-Shazly
- Department of Radiology and Clinical Imaging, Faculty of Medicine, Al-Azhar University, Cairo 11651, Egypt
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183
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Loesaus J, Wobbe I, Stahlberg E, Barkhausen J, Goltz JP. Reliability of the pronator quadratus fat pad sign to predict the severity of distal radius fractures. World J Radiol 2017; 9:359-364. [PMID: 29098069 PMCID: PMC5658631 DOI: 10.4329/wjr.v9.i9.359] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 01/19/2017] [Revised: 06/26/2017] [Accepted: 07/17/2017] [Indexed: 02/07/2023] Open
Abstract
AIM To evaluate the reliability of pronator quadratus fat pad sign to detect distal radius fracture and to predict its severity.
METHODS Retrospectively we identified 89 consecutive patients (41 female, mean age 49 ± 18 years) who had X-ray (CR) and computed tomography (CT) within 24 h following distal forearm trauma. Thickness of pronator quadratus fat pad complex (PQC) was measured using lateral views (CR) and sagittal reconstructions (CT). Pearson’s test was used to determine the correlation of the PQC thickness in CR and CT. A positive pronator quadratus sign (PQS) was defined as a PQC > 8.0 mm (female) or > 9.0 mm (male). Frykman classification was utilized to assess the severity of fractures.
RESULTS Forty-four/89 patients (49%) had a distal radius fracture (Frykman I n = 3, II n = 0, III n = 10, IV n = 5, V n = 2, VI n = 2, VII n = 9, VIII n = 13). Mean thickness of the PQC thickness can reliably be measured on X-ray views and was 7.5 ± 2.8 mm in lateral views (CR), respectively 9.4 ± 3.0 mm in sagittal reconstructions (CT), resulting in a significant correlation coefficient of 0.795. A positive PQS at CR was present in 21/44 patients (48%) with distal radius fracture and in 2/45 patients (4%) without distal radius fracture, resulting in a specificity of 96% and a sensitivity of 48% for the detection of distal radius fractures. There was no correlation between thickness of the PQC and severity of distal radius fractures.
CONCLUSION A positive PQS shows high specificity but low sensitivity for detection of distal radius fractures. The PQC thickness cannot predict the severity of distal radius fractures.
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Affiliation(s)
- Julia Loesaus
- Department for Radiology, Neuroradiology and Nuclear Medicine, University Hospital of Schleswig-Holstein, 23538 Lübeck, Germany
| | - Isabel Wobbe
- Department for Radiology, Neuroradiology and Nuclear Medicine, University Hospital of Schleswig-Holstein, 23538 Lübeck, Germany
| | - Erik Stahlberg
- Department for Radiology, Neuroradiology and Nuclear Medicine, University Hospital of Schleswig-Holstein, 23538 Lübeck, Germany
| | - Joerg Barkhausen
- Department for Radiology, Neuroradiology and Nuclear Medicine, University Hospital of Schleswig-Holstein, 23538 Lübeck, Germany
| | - Jan Peter Goltz
- Department for Radiology, Neuroradiology and Nuclear Medicine, University Hospital of Schleswig-Holstein, 23538 Lübeck, Germany
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184
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Mahajan A, Rao VRK, Anantaram G, Polnaya AM, Desai S, Desai P, Vadapalli R, Panigrahi M. Clinical-radiological-pathological correlation of cavernous sinus hemangioma: Incremental value of diffusion-weighted imaging. World J Radiol 2017; 9:330-338. [PMID: 28932362 PMCID: PMC5583528 DOI: 10.4329/wjr.v9.i8.330] [Citation(s) in RCA: 7] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/18/2017] [Accepted: 05/24/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To elucidate the clinical, magnetic resonance imaging (MRI), pathological features of these lesions and asses the incremental value of diffusion-weighted imaging (DWI) in diagnosing them.
METHODS Fifteen consecutive patients (11 females and 4 males; mean age 40.93 years; age range 13-63 years) with cavernous sinus hemangiomas (CSH) who underwent examination between November 2008 and May 2016 were included for the analysis. MRI, clinical and surgical findings of each patient was retrospectively reviewed. DWI were also analysed and mean-apparent diffusion coefficient (ADC) value was calculated. Eleven patients underwent surgical removal of the lesion and 2 patients had biopsy only. Diagnosis of CSH was confirmed histologically in 13 patients.
RESULTS Eleven patients (73%) presented with headaches and 10 (66%) had cranial nerve involvement. Extra cavernous sinus extension was noted in 14 (94%). Surgery was performed in 13 (87%) and post-operative radiation was given to 4 (28%) patients. Thirteen patients remained asymptomatic on follow up. Three conspicuous imaging features were highly suggestive of the diagnosis: Lack of diffusion restriction (100%), homogeneous hyperintensity on T2 weighted image sequences (93.3%) and intense post-contrast enhancement (100%). The mean ADC was 1.82 × 10-3 ± 0.2186 cm2/s.
CONCLUSION T1-weighted hypointensity with homogeneous hyperintensity on T2-weighted sequences, intense enhancement and absence of hemosiderin within the lesion on GRE sequence favour the diagnosis. Facilitated diffusion on DWI differentiates CSH from other solid cavernous sinus lesions and significantly improves the diagnostic accuracy, a critical factor for planning surgery.
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Affiliation(s)
- Abhishek Mahajan
- Department of Radiodiagnosis, Tata Memorial Centre, Mumbai 400012, India
| | - Vedula Rajni Kanth Rao
- Department of Radiology, Krishna Institute of Medical Sciences, Secunderabad 500003, India
| | - Gudipati Anantaram
- Department of Radiology, Krishna Institute of Medical Sciences, Secunderabad 500003, India
| | - Ashwin M Polnaya
- Department of Radiodiagnosis, Tata Memorial Centre, Mumbai 400012, India
| | - Sandeep Desai
- Department of Radiodiagnosis Clumax Imaging, Bangalore 560011, India
| | - Paresh Desai
- Department of Radiology, Apollo Victor Hospital, Goa 403601, India
| | - Rammohan Vadapalli
- Department of Radiology, Vijaya Diagnostics, Hyderabad, Secunderabad 500003, India
| | - Manas Panigrahi
- Department of Neurosurgery, Krishna Institute of Medical Sciences, Secunderabad 500003, India
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Ramani SK, Rastogi A, Mahajan A, Nair N, Shet T, Thakur MH. Imaging of the treated breast post breast conservation surgery/oncoplasty: Pictorial review. World J Radiol 2017; 9:321-329. [PMID: 28932361 PMCID: PMC5583527 DOI: 10.4329/wjr.v9.i8.321] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 01/20/2017] [Revised: 05/01/2017] [Accepted: 05/15/2017] [Indexed: 02/06/2023] Open
Abstract
Mammographic appearance of the normal breast is altered in the post-operative setting. It is essential to be aware of the normal findings as well as to identify features of recurrent disease with particular emphasis on radiological-pathological concordance. Digital breast tomosynthesis and volumetric breast density add incremental value in this clinical setting. We present a pictorial review of various cases to illustrate normal post-operative findings as well as mammographic features suspicious for recurrent disease.
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Affiliation(s)
- Subhash K Ramani
- Department of Radiodiagnosis, JJ Hospital, Mumbai 400008, India
- Department of Radiodiagnosis and Imaging, Tata Memorial Centre, Mumbai 400012, India
| | - Ashita Rastogi
- Department of Radiodiagnosis and Imaging, Tata Memorial Centre, Mumbai 400012, India
| | - Abhishek Mahajan
- Department of Radiodiagnosis and Imaging, Tata Memorial Centre, Mumbai 400012, India
| | - Nita Nair
- Department of Surgical Oncology, Tata Memorial Centre, Mumbai 400012, India
| | - Tanuja Shet
- Department of Pathology, Tata Memorial Centre, Mumbai 400012, India
| | - Meenakshi H Thakur
- Department of Radiodiagnosis and Imaging, Tata Memorial Centre, Mumbai 400012, India
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Mazzei MA, Guerrini S, Gentili F, Galzerano G, Setacci F, Benevento D, Mazzei FG, Volterrani L, Setacci C. Incidental extravascular findings in computed tomographic angiography for planning or monitoring endovascular aortic aneurysm repair: Smoker patients, increased lung cancer prevalence? World J Radiol 2017; 9:304-311. [PMID: 28794826 PMCID: PMC5529319 DOI: 10.4329/wjr.v9.i7.304] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 04/16/2017] [Accepted: 05/31/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To validate the feasibility of high resolution computed tomography (HRCT) of the lung prior to computed tomography angiography (CTA) in assessing incidental thoracic findings during endovascular aortic aneurysm repair (EVAR) planning or follow-up.
METHODS We conducted a retrospective study among 181 patients (143 men, mean age 71 years, range 50-94) referred to our centre for CTA EVAR planning or follow-up. HRCT and CTA were performed before or after 1 or 12 mo respectively to EVAR in all patients. All HRCT examinations were reviewed by two radiologists with 15 and 8 years’ experience in thoracic imaging. The results were compared with histology, bronchoscopy or follow-up HRCT in 12, 8 and 82 nodules respectively.
RESULTS There were a total of 102 suspected nodules in 92 HRCT examinations, with a mean of 1.79 nodules per patient and an average diameter of 9.2 mm (range 4-56 mm). Eighty-nine out of 181 HRCTs resulted negative for the presence of suspected nodules with a mean smoking history of 10 pack-years (p-y, range 5-18 p-y). Eighty-two out of 102 (76.4%) of the nodules met criteria for computed tomography follow-up, to exclude the malignant evolution. Of the remaining 20 nodules, 10 out of 20 (50%) nodules, suspected for malignancy, underwent biopsy and then surgical intervention that confirmed the neoplastic nature: 4 (20%) adenocarcinomas, 4 (20%) squamous cell carcinomas, 1 (5%) small cell lung cancer and 1 (5%) breast cancer metastasis); 8 out of 20 (40%) underwent bronchoscopy (8 pneumonia) and 2 out of 20 (10%) underwent biopsy with the diagnosis of sarcoidosis.
CONCLUSION HRCT in EVAR planning and follow-up allows to correctly identify patients requiring additional treatments, especially in case of lung cancer.
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187
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De Gregorio MA, Guirola JA, Lahuerta C, Serrano C, Figueredo AL, Kuo WT. Interventional radiology treatment for pulmonary embolism. World J Radiol 2017; 9:295-303. [PMID: 28794825 PMCID: PMC5529318 DOI: 10.4329/wjr.v9.i7.295] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/13/2017] [Accepted: 05/19/2017] [Indexed: 02/06/2023] Open
Abstract
Venous thromboembolism (VTE) is an illness that has a potentially life-threatening condition that affects a large percentage of the global population. VTE with pulmonary embolism (PE) is the third leading cause of death after myocardial infarction and stroke. In the first three months after an acute PE, there is an estimated 15% mortality among submassive PE, and 68% mortality in massive PE. Current guidelines suggest fibrinolytic therapy regarding the clinical severity, however some studies suggest a more aggressive treatment approach. This review will summarize the available endovascular treatments and the different techniques with its indications and outcomes.
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Vinh-Hung V, Everaert H, Farid K, Djassemi N, Baudin-Veronique J, Bougas S, Michailovich Y, Joachim-Contaret C, Cécilia-Joseph E, Verschraegen C, Nguyen NP. Preoperative [18]fluorodeoxyglucose-positron emission tomography/computed tomography in early stage breast cancer: Rates of distant metastases. World J Radiol 2017; 9:312-320. [PMID: 28794827 PMCID: PMC5529320 DOI: 10.4329/wjr.v9.i7.312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/20/2017] [Accepted: 06/19/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate rates of distant metastases (DM) detected with [18]fluorodeoxyglucose-positron emission tomography/computed tomography (18FDG-PET/CT) in early stage invasive breast cancer. METHODS We searched the English language literature databases of PubMed, EMBASE, ISI Web of Knowledge, Web of Science and Google Scholar, for publications on DM detected in patients who had 18FDG-PET/CT scans as part of the staging for early stages of breast cancer (stage I and II), prior to or immediately following surgery. Reports published between 2011 and 2017 were considered. The systematic review was conducted according to the PRISMA guidelines. RESULTS Among the 18 total studies included in the analysis, the risk of DM ranged from 0% to 8.3% and 0% to 12.9% for stage I and II invasive breast cancer, respectively. Among the patients with clinical stage II, the rate of occult metastases diagnosed by 18FDG-PET/CT was 7.2% (range, 0%-19.6%) for stage IIA and 15.8% (range, 0%-40.8%) for stage IIB. In young patients (< 40-year-old), 18FDG-PET/CT demonstrated a higher prevalence of DM at the time of diagnosis for those with aggressive histology (i.e., triple-negative receptors and poorly differentiated grade). CONCLUSION Young patients with poorly differentiated tumors and stage IIB triple-negative breast cancer may benefit from 18FDG-PET/CT at initial staging to detect occult DM prior to surgery.
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189
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Camastra GS, Sbarbati S, Danti M, Cacciotti L, Semeraro R, Della Sala SW, Ansalone G. Cardiac magnetic resonance in patients with acute cardiac injury and unobstructed coronary arteries. World J Radiol 2017; 9:280-286. [PMID: 28717414 PMCID: PMC5491655 DOI: 10.4329/wjr.v9.i6.280] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 04/29/2017] [Accepted: 05/19/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To define the role of cardiac magnetic resonance (CMR) by analyzing a particular group of patients with suspected acute coronary syndrome (ACS) and normal coronary angiogram.
METHODS From January 2009 to December 2015, we examined 220 patients with clinical suspicion of ACS, Troponin elevation [the threshold used to define a positive Troponin T test (TnT) was 0.1 ng/mL] and no significant coronary disease at angiography (the patients were considered to have significant angiographic disease only a 50% stenosis was detected in any of their coronary arteries). The role of CMR with the late gadolinium enhancement was evaluated.
RESULTS CMR was performed to 190 patients (86%) of this group which reveals: Myocarditis in 90 patients (47%); apical ballooning (Tako-Tsubo syndrome) in 32 patients (17%); myocardial infarction (MI) in 40 patients (21%) and no clear diagnosis identified by CMR in 28 patients (15%). A comparison with previous studies was also made. Clinical and echocardiographic follow-ups were performed at 12 ± 2 mo and no major adverse cardiac events were revealed.
CONCLUSION There is a group of patients with clinical suspicion of ACS displaying normal coronary angiograms. CMR was demonstrated to be a valuable tool in the differential diagnosis evaluation of myocarditis, apical ballooning and MI.
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190
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Mahajan A, Deshpande SS, Thakur MH. Diffusion magnetic resonance imaging: A molecular imaging tool caught between hope, hype and the real world of “personalized oncology”. World J Radiol 2017; 9:253-268. [PMID: 28717412 PMCID: PMC5491653 DOI: 10.4329/wjr.v9.i6.253] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 03/08/2017] [Accepted: 04/19/2017] [Indexed: 02/06/2023] Open
Abstract
“Personalized oncology” is a multi-disciplinary science, which requires inputs from various streams for optimal patient management. Humongous progress in the treatment modalities available and the increasing need to provide functional information in addition to the morphological data; has led to leaping progress in the field of imaging. Magnetic resonance imaging has undergone tremendous progress with various newer MR techniques providing vital functional information and is becoming the cornerstone of “radiomics/radiogenomics”. Diffusion-weighted imaging is one such technique which capitalizes on the tendency of water protons to diffuse randomly in a given system. This technique has revolutionized oncological imaging, by giving vital qualitative and quantitative information regarding tumor biology which helps in detection, characterization and post treatment surveillance of the lesions and challenging the notion that “one size fits all”. It has been applied at various sites with different clinical experience. We hereby present a brief review of this novel functional imaging tool, with its application in “personalized oncology”.
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191
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Kay FU, Kandathil A, Batra K, Saboo SS, Abbara S, Rajiah P. Revisions to the Tumor, Node, Metastasis staging of lung cancer (8 th edition): Rationale, radiologic findings and clinical implications. World J Radiol 2017; 9:269-279. [PMID: 28717413 PMCID: PMC5491654 DOI: 10.4329/wjr.v9.i6.269] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/21/2017] [Accepted: 04/19/2017] [Indexed: 02/06/2023] Open
Abstract
The Tumor, Node, Metastasis (TNM) staging system, adopted by the Union for International Cancer Control (UICC) and the American Joint Committee on Cancer (AJCC), has been recently revised, with the new 8th edition of the staging manual being published in January 2017. This edition has few but important evidence-based changes to the TNM staging system used for lung cancer. Radiologists should be aware of the updated classification system to accurately provide staging information to oncologists and oncosurgeons. In this article, we discuss the rationale, illustrate the changes with relevance to Radiology, and review the clinical implications of the 8th edition of the UICC/AJCC TNM staging system with regards to lung cancer.
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192
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van Veenendaal TM, IJff DM, Aldenkamp AP, Lazeron RHC, Hofman PAM, de Louw AJA, Backes WH, Jansen JFA. Chronic antiepileptic drug use and functional network efficiency: A functional magnetic resonance imaging study. World J Radiol 2017; 9:287-294. [PMID: 28717415 PMCID: PMC5491656 DOI: 10.4329/wjr.v9.i6.287] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 02/24/2017] [Accepted: 03/24/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To increase our insight in the neuronal mechanisms underlying cognitive side-effects of antiepileptic drug (AED) treatment.
METHODS The relation between functional magnetic resonance-acquired brain network measures, AED use, and cognitive function was investigated. Three groups of patients with epilepsy with a different risk profile for developing cognitive side effects were included: A “low risk” category (lamotrigine or levetiracetam, n = 16), an “intermediate risk” category (carbamazepine, oxcarbazepine, phenytoin, or valproate, n = 34) and a “high risk” category (topiramate, n = 5). Brain connectivity was assessed using resting state functional magnetic resonance imaging and graph theoretical network analysis. The Computerized Visual Searching Task was used to measure central information processing speed, a common cognitive side effect of AED treatment.
RESULTS Central information processing speed was lower in patients taking AEDs from the intermediate and high risk categories, compared with patients from the low risk category. The effect of risk category on global efficiency was significant (P < 0.05, ANCOVA), with a significantly higher global efficiency for patient from the low category compared with the high risk category (P < 0.05, post-hoc test). Risk category had no significant effect on the clustering coefficient (ANCOVA, P > 0.2). Also no significant associations between information processing speed and global efficiency or the clustering coefficient (linear regression analysis, P > 0.15) were observed.
CONCLUSION Only the four patients taking topiramate show aberrant network measures, suggesting that alterations in functional brain network organization may be only subtle and measureable in patients with more severe cognitive side effects.
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193
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Panwar J, Mathew A, Thomas BP. Cystic lesions of peripheral nerves: Are we missing the diagnosis of the intraneural ganglion cyst? World J Radiol 2017; 9:230-244. [PMID: 28634514 PMCID: PMC5441458 DOI: 10.4329/wjr.v9.i5.230] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 01/17/2017] [Accepted: 03/16/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To highlight the salient magnetic resonance imaging (MRI) features of the intraneural ganglion cyst (INGC) of various peripheral nerves for their precise diagnosis and to differentiate them from other intra and extra-neural cystic lesions. METHODS A retrospective analysis of the magnetic resonance (MR) images of a cohort of 245 patients presenting with nerve palsy involving different peripheral nerves was done. MR images were analyzed for the presence of a nerve lesion, and if found, it was further characterized as solid or cystic. The serial axial, coronal and sagittal MR images of the lesions diagnosed as INGC were studied for their pattern and the anatomical extent along the course of the affected nerve and its branches. Its relation to identifiable anatomical landmarks, intra-articular communication and presence of denervation changes in the muscles supplied by involved nerve was also studied. RESULTS A total of 45 cystic lesions in the intra or extraneural locations of the nerves were identified from the 245 MR scans done for patients presenting with nerve palsy. Out of these 45 cystic lesions, 13 were diagnosed to have INGC of a peripheral nerve on MRI. The other cystic lesions included extraneural ganglion cyst, paralabral cyst impinging upon the suprascapular nerve, cystic schwannoma and nerve abscesses related to Hansen's disease involving various peripheral nerves. Thirteen lesions of INGC were identified in 12 patients. Seven of these affected the common peroneal nerve with one patient having a bilateral involvement. Two lesions each were noted in the tibial and suprascapular nerves, and one each in the obturator and proximal sciatic nerve. An intra-articular connection along the articular branch was demonstrated in 12 out of 13 lesions. Varying stages of denervation atrophy of the supplied muscles of the affected nerves were seen in 7 cases. Out of these 13 lesions in 12 patients, 6 underwent surgery. CONCLUSION INGC is an important cause of reversible mono-neuropathy if diagnosed early and surgically treated. Its classic MRI pattern differentiates it from other lesions of the peripheral nerve and aid in its therapeutic planning. In each case, the joint connection has to be identified preoperatively, and the same should be excised during surgery to prevent further cyst recurrence.
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194
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Henninger B, Kremser C. Diffusion weighted imaging for the detection and evaluation of cholesteatoma. World J Radiol 2017; 9:217-222. [PMID: 28634512 PMCID: PMC5441457 DOI: 10.4329/wjr.v9.i5.217] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 02/23/2017] [Accepted: 03/13/2017] [Indexed: 02/06/2023] Open
Abstract
Cholesteatoma is a collection of keratinous debris and stratified squamous epithelium. It is trapped in the middle ear and can lead to bony erosion. The disease is treated surgically often followed by a second-look procedure to check for residual tissue or recurrence. Cholesteatoma has specific signal-intensity characteristics on magnetic resonance imaging with very high signal intensity on diffusion weighted imaging (DWI). Various DWI techniques exist: Echo-planar imaging (EPI)-based and non-EPI-based techniques as well as new approaches like multi-shot EPI DWI. This article summarizes all techniques, discusses the significance in detecting cholesteatoma and mentions actual studies. Further recommendations for daily clinical practise are provided.
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195
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Splettstößer A, Khan MF, Zimmermann B, Vogl TJ, Ackermann H, Middendorp M, Maataoui A. Correlation of lumbar lateral recess stenosis in magnetic resonance imaging and clinical symptoms. World J Radiol 2017; 9:223-229. [PMID: 28634513 PMCID: PMC5441455 DOI: 10.4329/wjr.v9.i5.223] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/11/2017] [Accepted: 03/17/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To assess the correlation of lateral recess stenosis (LRS) of lumbar segments L4/5 and L5/S1 and the Oswestry Disability Index (ODI).
METHODS Nine hundred and twenty-seven patients with history of low back pain were included in this uncontrolled study. On magnetic resonance images (MRI) the lateral recesses (LR) at lumbar levels L4/5 and L5/S1 were evaluated and each nerve root was classified into a 4-point grading scale (Grade 0-3) as normal, not deviated, deviated or compressed. Patient symptoms and disability were assessed using ODI. The Spearman’s rank correlation coefficient was used for statistical analysis (P < 0.05).
RESULTS Approximately half of the LR revealed stenosis (grade 1-3; 52% at level L4/5 and 42% at level L5/S1) with 2.2% and 1.9% respectively reveal a nerve root compression. The ODI score ranged from 0%-91.11% with an arithmetic mean of 34.06% ± 16.89%. We observed a very weak statistically significant positive correlation between ODI and LRS at lumbar levels L4/5 and L5/S1, each bilaterally (L4/5 left: rho < 0.105, P < 0.01; L4/5 right: rho < 0.111, P < 0.01; L5/S1 left: rho 0.128, P < 0.01; L5/S1 right: rho < 0.157, P < 0.001).
CONCLUSION Although MRI is the standard imaging tool for diagnosing lumbar spinal stenosis, this study showed only a weak correlation of LRS on MRI and clinical findings. This can be attributed to a number of reasons outlined in this study, underlining that imaging findings alone are not sufficient to establish a reliable diagnosis for patients with LRS.
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Greco G, Cascella T, Facciorusso A, Nani R, Lanocita R, Morosi C, Vaiani M, Calareso G, Greco FG, Ragnanese A, Bongini MA, Marchianò AV, Mazzaferro V, Spreafico C. Transarterial chemoembolization using 40 µm drug eluting beads for hepatocellular carcinoma. World J Radiol 2017; 9:245-252. [PMID: 28634515 PMCID: PMC5441456 DOI: 10.4329/wjr.v9.i5.245] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 02/20/2017] [Accepted: 03/13/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To assess the safety and efficacy of transarterial chemoembolization (TACE) of hepatocellular carcinoma (HCC) using a new generation of 40 μm drug eluting beads in patients not eligible for curative treatment.
METHODS Drug eluting bead TACE (DEB-TACE) using a new generation of microspheres (embozene tandem, 40 μm) preloaded with 100 mg of doxorubicin was performed on 48 early or intermediate HCC patients with compensated cirrhosis. Response to therapy was assessed with Response Evaluation Criteria in Solid Tumors (RECIST) and modified RECIST (mRECIST) guidelines applied to computed tomography or magnetic resonance imaging. Eleven out of the 48 treated patients treated progressed on to receive liver orthotopic transplantation (OLT). This allowed for histological analysis on the treated explanted nodules.
RESULTS DEB-TACE with 40 μm showed a good safety profile without major complications or 30-d mortality. The objective response rate of treated tumors was 72.6% and 26.7% according to mRECIST and RECIST respectively. Histological examination in 11 patients assigned to OLT showed a necrosis degree > 90% in 78.6% of cases. The overall time to progression was 13 mo (11-21).
CONCLUSION DEB-TACE with 40 μm particles is an effective treatment for the treatment of HCC in early-intermediate patients (Barcelona Clinic Liver Cancer stage A/B) with a good safety profile and good results in term of objective response rate and necrosis.
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197
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Kumar J, Afsal M, Garg A. Imaging spectrum of spinal dysraphism on magnetic resonance: A pictorial review. World J Radiol 2017; 9:178-190. [PMID: 28529681 PMCID: PMC5415887 DOI: 10.4329/wjr.v9.i4.178] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 02/15/2017] [Accepted: 03/02/2017] [Indexed: 02/06/2023] Open
Abstract
Congenital malformations of spine and spinal cord are collectively termed as spinal dysraphism. It includes a heterogeneous group of anomalies which result from faulty closure of midline structures during development. Magnetic resonance imaging (MRI) is now considered the imaging modality of choice for diagnosing these conditions. The purpose of this article is to review the normal development of spinal cord and spine and reviewing the MRI features of spinal dysraphism. Although imaging of spinal dysraphism is complicated, a systematic approach and correlation between neuro-radiological, clinical and developmental data helps in making the correct diagnosis.
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198
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Singh A, Kumar A, Kumar P, Kumar S, Gamanagatti S. “Beyond saving lives”: Current perspectives of interventional radiology in trauma. World J Radiol 2017; 9:155-177. [PMID: 28529680 PMCID: PMC5415886 DOI: 10.4329/wjr.v9.i4.155] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 12/08/2016] [Accepted: 01/18/2017] [Indexed: 02/06/2023] Open
Abstract
Interventional radiology (IR) has become an integral part in the management of traumatic injuries. There is an ever-increasing role of IR in traumatic injuries of solid abdominal organs, pelvic and peripheral arteries to control active bleeding by therapeutic embolization or vascular reconstruction using stent grafts. Traditionally, these endovascular treatments have been offered to hemodynamically stable patients. However, in recent times endovascular approach has become preferable to surgery even in hemodynamically unstable patients with injury of surgically difficult-to-access sites. With shifting trends towards non operative management coupled with availability of the current state-of-the-art equipments, hardware and technical expertise, IR has gained an impeccable role in trauma management. However, due to lack of awareness and widespread acceptance, IR continues to remain an ocean of unexplored potentialities.
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199
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Szklaruk J, Luersen G, Ma J, Wei W, Underwood M. Gd-EOB-DTPA based magnetic resonance imaging for predicting liver response to portal vein embolization. World J Radiol 2017; 9:199-205. [PMID: 28529683 PMCID: PMC5415889 DOI: 10.4329/wjr.v9.i4.199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 01/11/2017] [Accepted: 03/02/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the correlation between degree of kinetic growth (kGR) of the liver following portal vein embolization (PVE) liver and the enhancement of the during the hepatobiliary phase of contrast administration and to evaluate if the enhancement can be used to predict response to PVE prior to the procedure.
METHODS Seventeen patients were consented for the prospective study. All patients had an MR of the abdomen with Gd-EOB-DTPA. Fourteen patients underwent PVE. The correlation between the kGR of the liver and the degree of enhancement was evaluated with linear regression (strong assumptions) and Spearman’s correlation test (rank based, no assumptions). The correlation was examined for the whole liver, segments I, VIII, VII, VI, V, IV, right liver and left liver.
RESULTS There was no correlation between the degree of enhancement during the hepatobiliary phase and kGR for any segment, lobe of the liver or whole liver (P = 0.19 to 0.91 by Spearman’s correlation test).
CONCLUSION The relative enhancement of the liver during the hepatobiliary phase with Gd-EOB-DTPA cannot be used to predict the liver response to PVE.
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200
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Twomey M, Fleming H, Moloney F, Murphy KP, Crush L, O’Neill SB, Flanagan O, James K, Bogue C, O’Connor OJ, Maher MM. C-reactive protein and radiographic findings of lower respiratory tract infection in infants. World J Radiol 2017; 9:206-211. [PMID: 28529684 PMCID: PMC5415890 DOI: 10.4329/wjr.v9.i4.206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/08/2016] [Accepted: 10/18/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the association between C-reactive protein (CRP) and radiological evidence of lower respiratory tract infection (LRTI) in infants.
METHODS All patients aged less than 4 years who presented with suspected lower respiratory tract infection, who received a peri-presentation chest radiograph and CRP blood measurement over an 18-mo period were included in the study. Age, gender, source of referral, CRP, white cell count, neutrophil count along with the patients’ symptoms and radiologist’s report were recorded.
RESULTS Three hundred and eleven patients met the inclusion criteria. Abnormal chest radiographs were more common in patients with elevated CRP levels (P < 0.01). Radiologic signs of LRTI were identified in 73.7% of chest radiographs when a patient had a CRP level between 50-99 mg/L. CRP levels were a better predictor of positive chest radiograph findings for those aged greater than I year compared to those 1 year or less.
CONCLUSION CRP may be used in patients with suspected LRTI diagnosis to select those who are likely to have positive findings on chest radiograph, thus reducing unnecessary chest radiographs.
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