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AJR. American Journal of Roentgenology

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https://www.readbyqxmd.com/read/30106619/part-time-pediatric-radiology-the-realities-and-perceptions-of-part-time-employment-in-the-academic-setting
#1
Sarah J Menashe, Marguerite T Parisi, Teresa Chapman, A Luana Stanescu, Jason N Wright, Randolph K Otto, Ramesh S Iyer
OBJECTIVE: The goal of this study is to evaluate the perceptions held by full- and part-time academic pediatric radiologists with regard to the value of part-time radiologists, as well as the value placed on the work of part-time colleagues by their departments and institutions. MATERIALS AND METHODS: Two online surveys were distributed to full- and part-time pediatric radiologists via the Society for Pediatric Radiology e-mail list serve. Survey questions evaluated demographic data of both full- and part-time radiologists, as well as the perceptions each group has of part-time employment...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106618/diagnostic-accuracy-of-mri-for-diagnosis-of-internal-hernia-in-pregnant-women-with-prior-roux-en-y-gastric-bypass
#2
Satheesh Krishna, Matthew D F McInnes, Nicola Schieda, Sabarish Narayanasamy, Adnan Sheikh, Ania Kielar
OBJECTIVE: The purpose of this study was to evaluate the accuracy of MRI for the diagnosis of internal hernia (IH) in pregnant women who have undergone Roux-en-Y gastric bypass (RYGB). MATERIALS AND METHODS: Fifteen consecutively registered pregnant women (eight with surgically proven IH, seven without IH) who had previously undergone RYGB underwent MRI to rule out IH between July 2011 and July 2016. Two blinded radiologists retrospectively evaluated MRI examinations for the presence or absence of 13 established CT findings of IH...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106617/application-of-cinematic-rendering-in-clinical-routine-ct-examination-of-ankle-sprains
#3
Florian Berger, Lars C Ebert, Rahel A Kubik-Huch, Karim Eid, Michael J Thali, Tilo Niemann
OBJECTIVE: Cinematic rendering technique is used to generate almost photorealistic 3D reconstructions of volumetric data. The purpose of this study was to evaluate the feasibility of cinematically rendered reconstructions in routine CT examinations of ankle sprains. CONCLUSION: Cinematic rendering technique may be primarily used to deliver visual information to patients, physicians, and virtual anatomy classes. Postprocessing requires more time than traditional methods do, which can be a hindrance in clinical work...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106616/nipple-discharge-imaging-variability-among-u-s-radiologists
#4
Bhavika K Patel, Christina Ferraro, Heidi E Kosiorek, Vilert A Loving, Carl D'Orsi, Mary Newell, Richard J Gray
OBJECTIVE: The purpose of this study was to assess radiologists' choice of imaging modality for the evaluation of clinical symptoms of physiologic nipple discharge (e.g., bilateral discharge, multiple-duct orifices, and yellow, green, or white color) and pathologic nipple discharge (e.g., unilateral discharge, single-duct orifices, spontaneous and serous discharge, and clear or bloodstained color). MATERIALS AND METHODS: An online survey was sent to lead interpreting physicians at mammography facilities accredited by the American College of Radiology (ACR)...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106615/diagnostic-performance-of-transient-elastography-for-liver-fibrosis-in-children-a-systematic-review-and-meta-analysis
#5
Jae-Yeon Hwang, Hee Mang Yoon, Jeong Rye Kim, Jin Seong Lee, Ah Young Jung, Kyung Mo Kim, Young Ah Cho
OBJECTIVE: We aimed to assess the diagnostic performance of transient elastography for evaluating liver fibrosis in children and adolescents. MATERIALS AND METHODS: A computerized search of Medline and Embase up to December 31, 2017, was performed to identify studies. Studies evaluating the diagnostic performance of transient elastography for the severity of liver fibrosis in children and adolescents were selected. Pooled sensitivity and specificity were calculated using hierarchic logistic regression modeling...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106614/benefit-of-a-visual-aid-in-the-management-of-moderate-severity-contrast-media-reactions
#6
James B Gardner, Shayan Rashid, Lawrence Staib, Daniella Asch, Joseph Cavallo, Jennifer Arango, Jonathan Kirsch, Jay Pahade
OBJECTIVE: The purpose of this study was to compare management of moderate-severity reactions with and without a visual aid or flowchart in contrast medium reaction simulations. SUBJECTS AND METHODS: All attending radiologists and trainees were requested to participate in a contrast medium reaction simulation program, including a moderate-severity reaction scenario, and were randomized to groups having or not having a visual aid. The time to administer intramuscular (IM) epinephrine via automated injector and errors in administration were recorded...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106613/evaluation-of-gadolinium-deposition-in-the-brain-after-mr-arthrography
#7
Stephen F Kralik, Krish K Singhal, Mark S Frank, Lauren M Ladd
OBJECTIVE: Although significant investigation has been done into the deposition of gadolinium in the brains of patients receiving IV gadolinium, there is little research concerning nonintravenous uses of gadolinium, specifically in conjunction with musculoskeletal MR arthrography. Although small in volume, intraarticular administration is an off-label use of gadolinium, necessitating careful scrutiny for patient safety. Thus, we investigated the relationship between intraarticular gadolinium administration during MR arthrography and the presence of intracranial gadolinium deposition on subsequent brain MRI...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106612/practical-imaging-strategies-for-acute-appendicitis-in-children
#8
David W Swenson, Rama S Ayyala, Cassandra Sams, Edward Y Lee
OBJECTIVE: Diagnosing pediatric appendicitis is difficult because clinical findings are nonspecific. Improved accuracy can be obtained with ultrasound (US), CT, or MRI, despite considerable variation in their use at different institutions. This article reviews the evidence for best practices in imaging pediatric appendicitis. CONCLUSION: When each modality is optimally used, a stepwise imaging approach that begins with graded compression US and proceeds to CT or MRI in select cases is currently best practice...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106611/attenuation-and-degree-of-enhancement-with-conventional-120-kvp-polychromatic-ct-and-70-kev-monochromatic-rapid-kilovoltage-switching-dual-energy-ct-in-cystic-and-solid-renal-masses
#9
Satheesh Krishna, Nima Sadoughi, Matthew D F McInnes, Robert Chatelain, David B MacDonald, Nicola Schieda
OBJECTIVE: The purpose of this study was to compare attenuation values (in Hounsfield units) and degree of enhancement (attenuation change) in renal masses using 120-kVp polychromatic (conventional) CT and 70-keV monochromatic dual-energy CT (DECT). MATERIALS AND METHODS: Twenty-two patients with 39 renal masses (24 Bosniak category I and II cysts and 15 solid masses under active surveillance) underwent conventional CT (120-kVp unenhanced and contrast-enhanced CT) and rapid kilovoltage-switching DECT (120-kVp unenhanced CT and 70-keV contrast-enhanced CT)...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106610/optoacoustic-breast-imaging-imaging-pathology-correlation-of-optoacoustic-features-in-benign-and-malignant-breast-masses
#10
Reni Butler, Philip T Lavin, F Lee Tucker, Lora D Barke, Marcela Böhm-Vélez, Stamatia Destounis, Stephen R Grobmyer, Janine Katzen, Kenneth A Kist, Erini V Makariou, Kathy J Schilling, Catherine A Young, Basak E Dogan, Erin I Neuschler
OBJECTIVE: Optoacoustic ultrasound breast imaging is a fused anatomic and functional modality that shows morphologic features, as well as hemoglobin amount and relative oxygenation within and around breast masses. The purpose of this study is to investigate the positive predictive value (PPV) of optoacoustic ultrasound features in benign and malignant masses. SUBJECTS AND METHODS: In this study, 92 masses assessed as BI-RADS category 3, 4, or 5 in 94 subjects were imaged with optoacoustic ultrasound...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30106609/does-extended-pet-acquisition-in-pet-mri-rectal-cancer-staging-improve-results
#11
Jason J Bailey, Eric J Jordan, Colin Burke, Michael A Ohliger, Z Jane Wang, Katherine Van Loon, Madhulika G Varma, Thomas A Hope
OBJECTIVE: The purpose of this study was to determine if extended PET acquisition times in the pelvis during PET/MRI increase detection rates of potentially metastatic lymph nodes in patients with rectal cancer. MATERIALS AND METHODS: Our study was approved by the institutional review board of the University of California, San Francisco. Twenty-two patients with biopsy-proven rectal cancer underwent imaging via simultaneous 3-T time-of-flight PET/MRI, with seven undergoing two separate PET/MRI examinations, for a total of 29 studies...
August 14, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30085843/current-clinical-practice-patterns-of-self-identified-nuclear-medicine-specialists
#12
Patricia Balthazar, David M Schuster, Erin E Grady, Andrew B Rosenkrantz, Richard Duszak
OBJECTIVE: The objective of our study was to study patterns of services rendered by U.S. physicians who self-identify as nuclear medicine (NM) specialists. MATERIALS AND METHODS: Recent Medicare physician claims and demographic files were obtained and linked. NM specialists were defined as physicians self-identifying NM as their primary specialty on claims or as any of their specialties during enrollment. Using other self-identified specialties, we classified physicians as nuclear radiologists, nuclear cardiologists, exclusively NM physicians, or Others...
August 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30085842/evaluation-of-a-nonradioactive-magnetic-marker-wireless-localization-program
#13
Leslie R Lamb, Manisha Bahl, Michelle C Specht, Helen Anne D'Alessandro, Constance D Lehman
OBJECTIVE: The purpose of this study is to evaluate the feasibility and effectiveness of a nonradioactive magnetic marker wireless localization technique. MATERIALS AND METHODS: A retrospective review was performed of consecutive patients who underwent image-guided needle localization with nonradioactive magnetic markers and subsequent surgical excision from March to August 2017. Indications for marker placement, lesion type, imaging guidance used for marker placement, postprocedure mammographic imaging and reports, surgical reports, and surgical margin status were reviewed...
August 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30085841/venographic-analysis-of-portal-flow-after-tips-predicts-future-shunt-revision
#14
Aichi Chien, Yun-Lia Wang, Justin McWilliams, Edward Lee, Stephen Kee
OBJECTIVE: The purpose of this study was to investigate a new method-the portal vein enhancement curve-for quantifying portal vein blood flow immediately at transjugular intrahepatic portosystemic shunt (TIPS) creation using digital subtraction angiography images and its potential usefulness as a predictor of TIPS revision. CONCLUSION: The portal vein flow time constant, Qτ , was significantly different (p = 0.002) between patients grouped by 12-month revision (TIPS angioplasty, TIPS reduction, no revision); Qτ was higher in patients who required TIPS reduction...
August 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30085840/spinal-osteoid-osteoma-percutaneous-radiofrequency-ablation-using-a-navigational-bipolar-electrode-system
#15
Anderanik Tomasian, Jack W Jennings
OBJECTIVE: The purpose of this article is to describe the use of a navigational bipolar radiofrequency ablation system for the treatment of spinal osteoid osteomas. CONCLUSION: Safe and effective imaging-guided percutaneous radiofrequency ablation of spinal osteomas can be performed using a multidirectional bipolar electrode system.
August 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30085839/intestinal-beh%C3%A3-et-disease-evaluation-with-mr-enterography-a-case-control-study
#16
Elif Peker, Ayşe Erden, İlhan Erden, Nurşen Düzgün
OBJECTIVE: The purposes of this study were to discern imaging findings that distinguish Behçet disease from small-bowel Crohn disease, to find initial performance estimates for these findings, and to evaluate the diagnostic value of MR enterography (MRE) for detecting intestinal Behçet disease. MATERIALS AND METHODS: The MRE examinations of 30 consecutively registered patients with established intestinal Behçet disease were reviewed by two blinded readers. The frequencies of MRE findings were compared with those obtained for 30 control subjects with small-bowel Crohn disease who were matched for sex and age...
August 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30085838/propensity-score-matching-as-a-substitute-for-randomized-controlled-trials-on-acute-kidney-injury-after-contrast-media-administration-a-systematic-review
#17
Ilona A Dekkers, Aart J van der Molen
OBJECTIVE: Controversy exists regarding the causal relationship between contrast media administration and the development of acute kidney injury because prospective randomized controlled trials (RCTs) confirming this relationship are lacking. In this systematic review we address studies using propensity score matching with regard to contrast-induced acute kidney injury and possible implications for future practice guideline development. CONCLUSION: Propensity score matching can overcome the main limitations of conventional observational studies and could serve as an alternative in the absence of RCTs...
August 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30085837/preoperative-ct-findings-and-interobserver-reliability-of-fournier-gangrene
#18
David H Ballard, Constantine A Raptis, Jarot Guerra, Laurie Punch, Obeid Ilahi, John P Kirby, Vincent M Mellnick
OBJECTIVE: The objective of our study was to delineate CT findings and anatomic areas of involvement of surgically proven Fournier gangrene (FG) and determine interobserver reliability. MATERIALS AND METHODS: This study was a single-center retrospective study of patients with FG who underwent CT before surgical débridement of FG during a 9-year period. Thirty-eight patients with FG, 17 male and 21 female patients, underwent preoperative CT. Two radiologists reviewed the CT studies and recorded findings and anatomic areas of involvement...
August 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30085836/blood-brain-barrier-permeability-in-aneurysmal-subarachnoid-hemorrhage-correlation-with-clinical-outcomes
#19
Jana Ivanidze, Richard A Ferraro, Ashley E Giambrone, Alan Z Segal, Ajay Gupta, Pina C Sanelli
OBJECTIVE: The current understanding of the utility of blood-brain barrier permeability (BBBP) evaluation with extended-pass perfusion CT in the clinical setting is limited. We assessed whether BBBP parameters evaluated with perfusion CT correlate with unfavorable clinical outcomes in patients with aneurysmal subarachnoid hemorrhage (SAH). MATERIALS AND METHODS: A retrospective cross-sectional analysis was performed of 22 patients who underwent perfusion CT on days 0-3 after SAH...
August 7, 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/30085835/diffusion-kurtosis-imaging-combined-with-dwi-at-3-t-mri-for-detection-and-assessment-of-aggressiveness-of-prostate-cancer
#20
Xiangyu Wang, Ning Tu, Tao Qin, Fen Xing, Panying Wang, Guangyao Wu
OBJECTIVE: The objective of this study was to explore whether diffusion kurtosis imaging (DKI) combined with DWI can improve the performance of DWI in detection and assessment of aggressiveness of prostate cancer (PCa). MATERIALS AND METHODS: One hundred twenty patients with complete DK and MR images and diagnosis confirmed by prostate biopsy, including 67 patients with PCa and 53 patients with benign prostatic hyperplasia (BPH), were retrospectively analyzed. The patients with PCa were divided into a low-grade PCa group (Gleason score [GS] ≤ 3 + 3) and intermediate- and high-grade PCa group (GS ≥ 3 + 4)...
August 7, 2018: AJR. American Journal of Roentgenology
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