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AJR. American Journal of Roentgenology

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https://www.readbyqxmd.com/read/30540213/comparison-of-t2-weighted-imaging-dwi-and-dynamic-contrast-enhanced-mri-for-calculation-of-prostate-cancer-index-lesion-volume-correlation-with-whole-mount-pathology
#1
Chongpeng Sun, Aritrick Chatterjee, Ambereen Yousuf, Tatjana Antic, Scott Eggener, Gregory S Karczmar, Aytekin Oto
OBJECTIVE: The objective of our study was to investigate the comparative effectiveness of different MRI sequences for the estimation of index lesion volume in patients with prostate cancer (PCa) compared with ground truth volume measured on whole-mount pathology. MATERIALS AND METHODS: Patients with PCa underwent multiparametric MRI (mpMRI) on a 3-T MRI scanner before radical prostatectomy. Forty PCa index lesions were identified and outlined on histology by a pathologist...
December 12, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30540212/comparison-of-mri-activity-scoring-systems-and-features-for-the-terminal-ileum-in-patients-with-crohn-disease
#2
Carl A J Puylaert, Charlotte J Tutein Nolthenius, Jeroen A W Tielbeek, Jesica C Makanyanga, Manuel Rodriguez-Justo, Lodewijk A A Brosens, C Yung Nio, Douglas A Pendsé, Cyriel Y Ponsioen, Frans M Vos, Stuart A Taylor, Jaap Stoker
OBJECTIVE: The purpose of this study was to evaluate four previously validated MRI activity scoring systems for diagnosis and grading of Crohn disease (CD) in the terminal ileum against an endoscopic and histopathologic reference standard. SUBJECTS AND METHODS: Ethics approval and written informed consent were obtained. Subjects with known or suspected CD were prospectively recruited between December 2011 and August 2014. Each patient underwent MRI and ileocolonoscopy with terminal ileum biopsies...
December 12, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30540211/does-ipsilateral-dependent-positioning-during-percutaneous-lung-biopsy-decrease-the-risk-of-pneumothorax
#3
Thomas Leger, Naim Jerjir, Jules Gregory, Souhail Bennani, Gael Freche, Marie-Pierre Revel, Guillaume Chassagnon
OBJECTIVE: The purpose of this study is to determine whether placing patients in an ipsilateral-dependent position during percutaneous CT-guided transthoracic biopsy reduces the pneumothorax rate. MATERIALS AND METHODS: Between July 2013 and August 2017, a total of 516 patients (317 men and 199 women; mean age, 66.4 years) underwent core needle biopsies performed using 17- and 18-gauge needles. The overall pneumothorax rate and the rate of pneumothorax requiring drainage catheter insertion were compared between group A (patients placed in an ipsilateral-dependent position) and group B (patients placed in a position other than the ipsilateral-dependent position), with use of a chi-square test or Fisher exact test, as appropriate...
December 12, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30540210/the-doctor-patient-relationship-with-artificial-intelligence
#4
Shadi Aminololama-Shakeri, Javier E López
OBJECTIVE: The doctor-patient relationship has been evolving from benevolent paternalism to a more patient-centered relationship in the modern era. Although artificial intelligence (AI) has the potential to improve nearly every aspect of health care, many physicians are skeptical about integrating AI into their current medical practice. The purpose of this article is to explore what AI means for the doctor-patient relationship and for breast imaging radiologists. CONCLUSION: The promise of AI is its potential to release physicians from tasks that are better performed by automation...
December 12, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30540209/prediction-of-lymph-node-maximum-standardized-uptake-value-in-patients-with-cancer-using-a-3d-convolutional-neural-network-a-proof-of-concept-study
#5
Hiram Shaish, Simukayi Mutasa, Jasnit Makkar, Peter Chang, Lawrence Schwartz, Firas Ahmed
OBJECTIVE: The purpose of this study is to determine whether a convolutional neural network (CNN) can predict the maximum standardized uptake value (SUVmax ) of lymph nodes in patients with cancer using the unenhanced CT images from a PET/CT examination, thus providing a proof of concept for potentially using deep learning to diagnose nodal involvement. MATERIALS AND METHODS: Consecutive initial staging PET/CT scans obtained in 2017 for patients with pathologically proven malignancy were collected...
December 12, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30540208/journal-club-performance-of-screening-breast-mri-after-negative-full-field-digital-mammography-versus-after-negative-digital-breast-tomosynthesis-in-women-at-higher-than-average-risk-for-breast-cancer
#6
Ashley A Roark, Pragya A Dang, Bethany L Niell, Elkan F Halpern, Constance D Lehman
OBJECTIVE: The objective of our study was to compare the supplemental cancer yield and performance of breast MRI in women at higher-than-average risk for breast cancer after negative 2D full-field digital mammography (FFDM) or negative digital breast tomosynthesis (DBT). MATERIALS AND METHODS: Retrospective review identified 4418 screening breast MRI examinations: 2291 were performed from January 2010 through January 2012 of patients with a negative FFDM examination in the 12 months before MRI (FFDM group), and 2127 were performed from January 2013 through January 2015 of patients with a negative DBT examination in the 12 months before MRI (DBT group)...
December 12, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30512996/abbreviated-biparametric-versus-standard-multiparametric-mri-for-diagnosis-of-prostate-cancer-a-systematic-review-and-meta-analysis
#7
Zhen Kang, Xiangde Min, Jeffrey Weinreb, Qiubai Li, Zhaoyan Feng, Liang Wang
OBJECTIVE: The objective of our study was to evaluate the diagnostic accuracy of abbreviated biparametric MRI (bpMRI) versus standard multiparametric MRI (mpMRI) for prostate cancer (PCa) using guided biopsy or prostatectomy histopathology results as the reference standard. MATERIALS AND METHODS: A comprehensive literature search of PubMed, Web of Science, and Cochrane Library databases was performed by two researchers independently and the relevant references were assessed...
December 4, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30512995/repeat-ct-performed-within-one-month-of-ct-conducted-in-the-emergency-department-for-abdominal-pain-a-secondary-analysis-of-data-from-a-prospective-multicenter-study
#8
Leslie K Lee, Andrew T Reisner, William D Binder, Atif Zaheer, Martin L Gunn, Ken F Linnau, Chad M Miller, Maurice S Herring, Angela C Tramontano, Avinash Kambadakone, Onofrio A Catalano, Mukesh Harisinghani, Elkan F Halpern, Karen Donelan, G Scott Gazelle, Pari V Pandharipande
OBJECTIVE: The purpose of this study is to determine both the frequency of repeat CT performed within 1 month after a patient visits the emergency department (ED) and undergoes CT evaluation for abdominal pain and the frequency of worsened or new CT-based diagnoses. SUBJECTS AND METHODS: Secondary analysis was performed on data collected during a prospective multicenter study. The parent study included patients who underwent CT in the ED for abdominal pain between 2012 and 2014, and these patients constituted the study group of the present analysis...
December 4, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30512994/the-lateral-c1-c2-puncture-indications-technique-and-potential-complications
#9
Steven P Daniels, Andrew D Schweitzer, Ritwik Baidya, George Krol, Robert Schneider, Eric Lis, J Levi Chazen
OBJECTIVE: Lateral C1-C2 puncture can be used for CSF collection, contrast agent injection for myelography, and access for cordotomy. The objective of this article is to describe the indications, technique, and potential complications of this procedure. CONCLUSION: Radiologists performing lumbar puncture or myelography should be comfortable gaining access to the subarachnoid space via the lateral C1-C2 approach when indicated. Familiarity with the technique and its potential complications is essential for a safe and efficient procedure...
December 4, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30512993/on-the-need-for-a-taxonomy-for-interventional-radiology-initiating-dialogue-for-the-future
#10
Erik N K Cressman
OBJECTIVE: Interventional radiology (IR) needs comprehensive structure. The reactive structure of the past is strategically unwise for long-term growth of IR. CONCLUSION: IR needs a structured approach to move forward most effectively. A preliminary taxonomic scaffold is put forth and critically analyzed to illustrate new areas of research for the field, to identify new opportunities for growth, and to serve as a starting point for future discussion.
December 4, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30512992/whole-body-mri-comparison-of-its-capability-for-tnm-staging-of-malignant-pleural-mesothelioma-with-that-of-coregistered-pet-mri-integrated-fdg-pet-ct-and-conventional-imaging
#11
Yoshiharu Ohno, Masao Yui, Kota Aoyagi, Yuji Kishida, Shinichiro Seki, Hisanobu Koyama, Takeshi Yoshikawa
OBJECTIVE: The purpose of this study was to compare the diagnostic accuracy of whole-body MRI, coregistered FDG PET/MRI, integrated FDG PET/CT, and conventional imaging examination including bone scintigraphy, contrast-enhanced brain MRI, and CT for malignant pleural mesothelioma (MPM) staging according to the new International Association for the Study of Lung Cancer (IASLC) system. SUBJECTS AND METHODS: The study subjects were 23 consecutively registered patients with MPM (15 men, eight women; mean age, 68 years for both sexes) who had prospectively undergone whole-body FDG PET/CT, whole-body MRI, conventional radiologic examination, surgical or conventional treatments, pathologic examination, and follow-up conventional imaging examinations between January 2011 and December 2017...
December 4, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30476460/virtual-monochromatic-dual-energy-aortoiliac-ct-angiography-with-reduced-iodine-dose-a-prospective-randomized-study
#12
Manuel Patino, Anushri Parakh, Grace C Lo, Mukta Agrawal, Avinash R Kambadakone, George R Oliveira, Dushyant V Sahani
OBJECTIVE: The purpose of this study was to assess the feasibility of performing abdominopelvic aortoiliac CT angiography (CTA) with 16.0 g of iodine contrast medium acquired with low-energy (40 and 50 keV) virtual monochromatic (VMC) images with rapid-kilovoltage-switching dual-energy CT. SUBJECTS AND METHODS: A total of 52 adults with abdominal aortoiliac aneurysm and prior 120-kVp single-energy CTA (SECTA) with 33 g iodine (standard dose) underwent follow-up dual-energy CTA (DECTA) with a 52% reduced iodine dose...
November 26, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30476459/management-of-palpable-pediatric-breast-masses-with-ultrasound-characteristics-of-fibroadenoma-a-more-conservative-approach
#13
Lena Omar, Miranda K Gleason, Cory M Pfeifer, Pooja Sharma, Jeannie K Kwon
OBJECTIVE: The purpose of this study is to describe our experience with pathologically proven breast masses at a tertiary care pediatric institution, review published management strategies, and propose new management recommendations for the pediatric population. MATERIALS AND METHODS: All pediatric breast ultrasound examinations performed at a dedicated pediatric facility over a 4-year period were reviewed. Maximum measurements of solid masses with features of a fibroadenoma were recorded...
November 26, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30476458/do-deauville-scores-improve-the-clinical-utility-of-end-of-therapy-fdg-pet-scans-for-pediatric-hodgkin-lymphoma
#14
Laura K Sedig, Jason J Bailey, Ka Kit Wong, Richard K J Brown, Mark S Kaminski, Raymond J Hutchinson
OBJECTIVE: The purpose of this study was to evaluate the clinical utility of Deauville scores in interpretation of end-of-chemotherapy FDG PET scans. CONCLUSION: Deauville scores improve the clinical utility of end-of-chemotherapy PET, as evidenced by an increase in positive predictive value to 72.7% from 44.4% on the basis of report alone. The negative predictive value remains greater than 95%.
November 26, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30476457/mr-arthrogram-features-that-can-be-used-to-distinguish-between-true-inferior-glenohumeral-ligament-complex-tears-and-iatrogenic-extravasation
#15
Wilbur Wang, Brady K Huang, Matthew Sharp, Lidi Wan, Niloofar Shojaeiadib, Jiang Du, Eric Y Chang
OBJECTIVE: The purpose of this study is to identify features seen at shoulder MR arthrography that distinguish between iatrogenic contrast material extravasation and inferior glenohumeral ligament (IGHL) complex tears. MATERIALS AND METHODS: MR arthrograms (n = 1740) were screened for extravasation through the IGHL complex. Cases were defined on the basis of surgical findings or definitive lack of extravasation in a fully distended joint immediately after contrast agent injection...
November 26, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30476456/effect-of-ct-reconstruction-algorithm-on-the-diagnostic-performance-of-radiomics-models-a-task-based-approach-for-pulmonary-subsolid-nodules
#16
Hyungjin Kim, Chang Min Park, Jeonghwan Gwak, Eui Jin Hwang, Seon Young Lee, Julip Jung, Helen Hong, Jin Mo Goo
OBJECTIVE: We investigated whether the diagnostic performance of machine learning-based radiomics models for the discrimination of invasive pulmonary adenocarcinomas (IPAs) among subsolid nodules (SSNs) was affected by the proportion of images reconstructed with filtered back projection (FBP) and model-based iterative reconstruction (MBIR) in datasets used for feature extraction. MATERIALS AND METHODS: This retrospective study included 60 patients (23 men and 37 women; mean age, 61...
November 26, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30476455/the-american-board-of-radiology-b-leonard-holman-research-pathway-to-initial-certification-opportunities-lost-for-diagnostic-radiology
#17
Paul E Wallner, Kaled M Alektiar, Lane F Donnelly, John A Kaufman
OBJECTIVE: In 1998, the American Board of Radiology introduced the B. Leonard Holman Research Pathway (HRP) to initial certification for trainees in diagnostic radiology (DR) and radiation oncology (RO) motivated to pursue research-oriented careers in academic DR and RO. CONCLUSION: The HRP Committee anticipated that there would be a relatively even distribution between DR and RO participants, but with 18 years of experience that has not been the case. This article focuses on the HRP and DR...
November 26, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30476454/patient-photographs-privacy-versus-protection
#18
Srini Tridandapani, Pamela Bhatti, Carson Wick
OBJECTIVE: Technologies to obtain point-of-care photographs along with medical imaging studies are now available. We discuss the protections that photographs can provide in radiology and the potential privacy and legal issues that can arise with their incorporation. CONCLUSION: Point-of-care photographs that are simultaneously obtained with medical imaging studies can provide biometric identification that enables detection of wrong-patient errors. Photographs also provide image-related clinical context...
November 26, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30476453/utility-of-attenuation-coefficient-measurement-using-an-ultrasound-guided-attenuation-parameter-for-evaluation-of-hepatic-steatosis-comparison-with-mri-determined-proton-density-fat-fraction
#19
Toshifumi Tada, Takashi Kumada, Hidenori Toyoda, Natsuko Kobayashi, Yasuhiro Sone, Takuma Oguri, Naohisa Kamiyama
OBJECTIVE: Recently, a new method was developed to diagnose hepatic steatosis by measuring attenuation coefficients that are based on the ultrasound-guided attenuation parameter (UGAP). We investigated the diagnostic ability of these coefficients to detect steatosis that was identified using the proton density fat fraction (PDFF) on MRI in patients with chronic liver disease. MATERIALS AND METHODS: A total of 126 patients with chronic liver disease (non-hepatitis B, non-hepatitis C) were analyzed...
November 26, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30476452/refining-convolutional-neural-network-detection-of-small-bowel-obstruction-in-conventional-radiography
#20
Phillip M Cheng, Khoa N Tran, Gilbert Whang, Tapas K Tejura
OBJECTIVE: The purpose of this study was to evaluate improvement of convolutional neural network detection of high-grade small-bowel obstruction on conventional radiographs with increased training set size. MATERIALS AND METHODS: A set of 2210 abdominal radiographs from one institution (image set 1) had been previously classified into obstructive and nonobstructive categories by consensus judgments of three abdominal radiologists. The images were used to fine-tune an initial convolutional neural network classifier (stage 1)...
November 26, 2018: AJR. American Journal of Roentgenology
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