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AJR. American Journal of Roentgenology

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https://www.readbyqxmd.com/read/28199152/can-radiologists-predict-the-presence-of-ductal-carcinoma-in-situ-and-invasive-breast-cancer
#1
Shadi Aminololama-Shakeri, Chris I Flowers, Christine E McLaren, Dorota J Wisner, Jade de Guzman, Joan E Campbell, Lawrence W Bassett, Haydee Ojeda-Fournier, Karen Gerlach, Jonathan Hargreaves, Sarah L Elson, Hanna Retallack, Bonnie N Joe, Stephen A Feig, Colin J Wells
OBJECTIVE: We hypothesize that radiologists' estimated percentage likelihood assessments for the presence of ductal carcinoma in situ (DCIS) and invasive cancer may predict histologic outcomes. MATERIALS AND METHODS: Two hundred fifty cases categorized as BI-RADS category 4 or 5 at four University of California Medical Centers were retrospectively reviewed by 10 academic radiologists with a range of 1-39 years in practice. Readers assigned BI-RADS category (1, 2, 3, 4a, 4b, 4c, or 5), estimated percentage likelihood of DCIS or invasive cancer (0-100%), and confidence rating (1 = low, 5 = high) after reviewing screening and diagnostic mammograms and ultrasound images...
February 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28199139/feasibility-of-vacuum-assisted-breast-cone-beam-ct-guided-biopsy-and-comparison-with-prone-stereotactic-biopsy
#2
Susanne Wienbeck, Joachim Lotz, Uwe Fischer
OBJECTIVE: The feasibility of breast vacuum-assisted biopsy (VAB) guided by cone-beam CT (CBCT) was assessed. The initial clinical performance of CT-guided breast VAB was compared with that of established prone stereotactic VAB. MATERIALS AND METHODS: In this retrospective clinical trial, VABs were performed for women with mammographically suspicious breast lesions using a dedicated breast CBCT protocol. The technical success rate, total intervention time, and complications were documented and compared with examinations performed by prone stereotactic VAB...
February 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28199138/pediatric-neuroendocrine-carcinoid-tumors-review-of-diagnostic-imaging-findings-and-recent-advances
#3
Andrew J Degnan, Sameh S Tadros, Shannon Tocchio
OBJECTIVE: Although rare, pediatric neuroendocrine tumors including carcinoid tumor have increased in incidence over the past few decades. Despite increased recognition, survival rates have not significantly improved. Earlier detection of these tumors is necessary to improve clinical outcomes. This article discusses imaging approaches for detecting pediatric carcinoid tumors including anatomic imaging methods such as CT and MRI as well as functional imaging methods targeting the somatostatin receptor including (111)In-labeled octreotide and newer (68)Ga-based radiotracers that may hold promise in hybrid PET/CT or PET/MRI...
February 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28199136/updates-on-mri-evaluation-of-pediatric-large-airways
#4
Mark C Liszewski, Pierluigi Ciet, Kushaljit Singh Sodhi, Edward Y Lee
OBJECTIVE: The purposes of this article are to present a practical approach to imaging of common congenital and acquired diseases of the pediatric large airways with MRI and to describe the imaging findings. CONCLUSION: High-quality MRI of the airways is an increasingly feasible alternative to conventional radiography, fluoroscopy, and CT in the evaluation of many diseases of the pediatric large airways.
February 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28199132/comparison-of-long-term-results-of-percutaneous-treatment-techniques-for-hepatic-cystic-echinococcosis-types-2-and-3b
#5
Okan Akhan, Aysun E Salik, Turkmen Ciftci, Devrim Akinci, Filiz Islim, Burcu Akpinar
OBJECTIVE: The purpose of this study was to determine the long-term results of a modified catheterization technique for percutaneous treatment of hepatic cystic echinococcosis (CE) types 2 and 3b and to retrospectively compare the results of puncture, aspiration, injection, and reaspiration (PAIR); standard catheterization; and the modified catheterization technique. MATERIALS AND METHODS: Seventy-three patients (37 male, 36 female; 75 cysts) with CE types 2 and 3b who underwent percutaneous treatment from March 1991 to August 2008 were included...
February 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28199131/how-satisfied-are-patients-with-their-radiologists-assessment-using-a-national-patient-ratings-website
#6
Luke A Ginocchio, Richard Duszak, Andrew B Rosenkrantz
OBJECTIVE: The purpose of this study is to assess features of patient satisfaction scores for U.S. radiologists using a popular physician rating website. MATERIALS AND METHODS: Patient reviews were retrieved from the website RateMDs for all listed radiologists in all 297 U.S. cities with population 100,000 or greater. Reviews included rating scores of 1-5 (5 = highest) in four categories (staff, punctuality, knowledge, and helpfulness). Additional physician information was obtained from Medicare files...
February 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28199129/a-focal-defect-at-the-lateral-patellar-retinaculum-on-clinical-knee-mri-and-cadaveric-study-a-normal-variant-or-pathologic-lesion
#7
Ji Su Kim, Seong Jong Yun, Wook Jin, Gou Young Kim, So Young Park, Ji Seon Park, Kyung Nam Ryu
OBJECTIVE: The purpose of this study is to retrospectively investigate the frequency of a focal defect at the lateral patellar retinaculum on knee MRI and to determine the variables that are significantly associated with the defect. MATERIALS AND METHODS: Two radiologists independently reviewed 99 knee MR images for the presence of a focal defect at the lateral patellar retinaculum and categorized patients with concordant results into two groups: a group with the defect (≥ 3 mm; group 1) and a group without the defect (< 3 mm; group 2)...
February 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28199127/development-of-rad-score-a-tool-to-assess-the-procedural-competence-of-diagnostic-radiology-residents
#8
Inga Isupov, Matthew D F McInnes, Stan J Hamstra, Geoffrey Doherty, Ashish Gupta, Susan Peddle, Zaid Jibri, Kawan Rakhra, Rebecca M Hibbert
OBJECTIVE: The purpose of this study is to develop a tool to assess the procedural competence of radiology trainees, with sources of evidence gathered from five categories to support the construct validity of tool: content, response process, internal structure, relations to other variables, and consequences. SUBJECTS AND METHODS: A pilot form for assessing procedural competence among radiology residents, known as the RAD-Score tool, was developed by evaluating published literature and using a modified Delphi procedure involving a group of local content experts...
February 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177700/ct-guided-biopsy-of-entirely-endophytic-small-renal-masses-diagnostic-rates-and-complications-using-standard-dose-and-reduced-dose-ct-protocols
#9
Mi-Hyun Kim
OBJECTIVE: The objective of this study was to compare diagnostic rates and complications using standard-dose and reduced-dose CT protocols for CT-guided biopsies of entirely endophytic small renal masses. MATERIALS AND METHODS: A total of 73 patients with 74 tumors underwent CT-guided biopsy of entirely endophytic small renal masses (≤ 4 cm). Diagnostic rates, histologic findings, radiation doses, complication rates, and procedure duration were assessed by retrospective review of charts and images and were compared for the standard-dose and reduced-dose groups...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177655/iterative-image-reconstruction-improves-the-accuracy-of-automated-plaque-burden-assessment-in-coronary-ct-angiography-a-comparison-with-intravascular-ultrasound
#10
Stefan B Puchner, Maros Ferencik, Akiko Maehara, Paul Stolzmann, Shixin Ma, Synho Do, Hans-Ulrich Kauczor, Gary S Mintz, Udo Hoffmann, Christopher L Schlett
OBJECTIVE: The purpose of this study was to determine whether use of iterative image reconstruction algorithms improves the accuracy of coronary CT angiography (CCTA) compared with intravascular ultrasound (IVUS) in semiautomated plaque burden assessment. MATERIALS AND METHODS: CCTA and IVUS images of seven coronary arteries were acquired ex vivo. CT images were reconstructed with filtered back projection (FBP) and adaptive statistical (ASIR) and model-based (MBIR) iterative reconstruction algorithms...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177653/prognostic-value-of-stress-dynamic-myocardial-perfusion-ct-in-a-multicenter-population-with-known-or-suspected-coronary-artery-disease
#11
Felix G Meinel, Francesca Pugliese, U Joseph Schoepf, Ullrich Ebersberger, Julian L Wichmann, Gladys G Lo, Yeon Hyeon Choe, Yining Wang, Sabrina Segreto, Fabian Bamberg, Carlo N De Cecco
OBJECTIVE: The purpose of this study was to determine the prognostic value of myocardial perfusion CT for major adverse cardiac events (MACE). MATERIALS AND METHODS: Data from six centers in Asia, Europe, and North America on 144 patients with known or suspected coronary artery disease who had undergone coronary CT angiography (CCTA) and dynamic myocardial perfusion CT with a dual-source CT system were analyzed. CCTA studies were acquired at rest. Dynamic myocardial perfusion CT was performed under vasodilator stress...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177652/irreversible-electroporation-defining-the-mri-appearance-of-the-ablation-zone-with-histopathologic-correlation-in-a-porcine-liver-model
#12
Ely R Felker, Isabel Dregely, Dong Jin Chung, Kyunghyun Sung, Ferdnand C Osuagwu, Charles Lassman, James Sayre, Holden Wu, David S Lu
OBJECTIVE: The purpose of this study is to evaluate the MRI appearance of the irreversible electroporation zone in porcine liver, with histopathologic correlation. MATERIALS AND METHODS: Nine irreversible electroporation ablations were percutaneously created in two Yorkshire pigs. Irreversible electroporation was performed with a bipolar 16-gauge electrode with 3-cm exposure tip and fixed 8-mm interpolar distance. Gadoxetate disodium-enhanced 3-T MRI was performed 50 hours after irreversible electroporation...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177651/medicolegal-malpractice-and-ethical-issues-in-radiologyrule-68
#13
Leonard Berlin
No abstract text is available yet for this article.
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177650/ct-angiography-of-suspected-peripheral-artery-disease-comparison-of-contrast-enhancement-in-the-lower-extremities-of-patients-undergoing-and-those-not-undergoing-hemodialysis
#14
Takanori Masuda, Yoshinori Funama, Takeshi Nakaura, Naoyuki Imada, Tomoyasu Sato, Tomokazu Okimoto, Kazuo Awai
OBJECTIVE: The objective of our study was to compare contrast enhancement on CT angiography (CTA) images of the lower extremity in patients with suspected peripheral artery disease who did not undergo hemodialysis (HD) and patients who were scanned before or after HD. MATERIALS AND METHODS: We divided 287 consecutive patients who underwent CTA of the lower extremity on a 64-MDCT scanner into three groups: group 1 patients (n = 151) were not dependent on HD, group 2 patients (n = 70) were dependent on HD and underwent HD less than 24 hours after CTA, and group 3 (n = 66) were dependent on HD and underwent HD less than 24 hours before CTA...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177648/robotic-arm-assisted-sonography-review-of-technical-developments-and-potential-clinical-applications
#15
Daniel R Swerdlow, Kevin Cleary, Emmanuel Wilson, Bamshad Azizi-Koutenaei, Reza Monfaredi
OBJECTIVE: Ultrasound imaging requires trained personnel. Advances in robotics and data transmission create the possibility of telesonography. This review introduces clinicians to current technical work in and potential applications of this developing capability. CONCLUSION: Telesonography offers advantages in hazardous or remote environments. Robotically assisted ultrasound can reduce stress injuries in sonographers and has potential utility during robotic surgery and interventional procedures...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177647/comprehensive-assessment-of-ankle-syndesmosis-injury-using-3d-isotropic-turbo-spin-echo-sequences-diagnostic-performance-compared-with-that-of-conventional-and-oblique-3-t-mri
#16
Minchul Kim, Yun Sun Choi, Min Sun Jeong, Mira Park, Tong Jin Chun, Jin Su Kim, Ki Won Young
OBJECTIVE: The objective of this study is to evaluate the diagnostic performance of 3D sampling perfection with application-optimized contrasts using different flip angle evolution (SPACE) sequences in the evaluation of ankle syndesmosis injuries, compared with that of conventional orthogonal MRI and oblique proton density-weighted turbo spin-echo (TSE) sequences performed with 3-T MRI. MATERIALS AND METHODS: This retrospective study included 98 patients with suspected ankle syndesmosis injuries who underwent both MRI and surgery...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177646/digital-breast-tomosynthesis-cost-effectiveness-of-using-private-and-medicare-insurance-in-community-based-health-care-facilities
#17
Sara A Hunter, Colleen Morris, Karl Nelson, Brandon J Snyder, Thomas B Poulton
OBJECTIVE: The purpose of this study was to determine whether digital breast tomosynthesis (DBT) is a cost-effective alternative to full-field digital mammography (FFDM) for both Medicare and privately insured patients undergoing screening mammography. MATERIALS AND METHODS: A retrospective data analysis was performed between July 15, 2013, and July 14, 2014, with data on women presenting for screening mammography that included any additional radiologic workup (n = 6319)...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28177644/pet-ct-for-head-and-neck-squamous-cell-carcinoma-should-we-routinely-include-the-head-and-abdomen
#18
Uliyana Yankevich, Marion A Hughes, Tanya J Rath, Saeed Fakhran, Lea M Alhilahi, Kim W Seungwon, Barton F Branstetter
OBJECTIVE: The purpose of our study was to determine the diagnostic and therapeutic yield of the head and abdomen portions of PET/CT scans of patients with head and neck squamous cell cancer (HNSCC) to determine whether these areas should be routinely included with PET/CT of the neck and chest. MATERIALS AND METHODS: Patients with pathologically proven HNSCC who underwent full-body PET/CT were evaluated for metastases to the head, chest, and abdomen. Medical records were reviewed to determine whether the head and abdominal findings changed the clinical management, beyond the findings in the neck and chest...
February 8, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28140650/comparison-of-a-fast-5-minute-shoulder-mri-protocol-with-a-standard-shoulder-mri-protocol-a-multiinstitutional-multireader-study
#19
Naveen Subhas, Alex Benedick, Nancy A Obuchowski, Joshua M Polster, Luis S Beltran, Jean Schils, Gina A Ciavarra, Soterios Gyftopoulos
OBJECTIVE: The purpose of this study was to compare the diagnostic performance of a 5-minute shoulder MRI protocol consisting of multiplanar 2D fast spin-echo (FSE) sequences with parallel imaging to that of a standard shoulder MRI protocol. MATERIALS AND METHODS: A retrospective review of 151 3-T MRI examinations of shoulders of 147 patients (mean age, 46.95 years) and 50 1.5-T MRI examinations of shoulders of 50 patients (mean age, 53.74 years) with four fast and five standard sequences from two academic centers between January 2014 and April 2015 was performed by three musculoskeletal radiologists...
January 31, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28140627/performance-of-a-machine-learning-classifier-of-knee-mri-reports-in-two-large-academic-radiology-practices-a-tool-to-estimate-diagnostic-yield
#20
Saeed Hassanpour, Curtis P Langlotz, Timothy J Amrhein, Nicholas T Befera, Matthew P Lungren
OBJECTIVE: The purpose of this study is to evaluate the performance of a natural language processing (NLP) system in classifying a database of free-text knee MRI reports at two separate academic radiology practices. MATERIALS AND METHODS: An NLP system that uses terms and patterns in manually classified narrative knee MRI reports was constructed. The NLP system was trained and tested on expert-classified knee MRI reports from two major health care organizations...
January 31, 2017: AJR. American Journal of Roentgenology
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