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Academic Radiology

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https://www.readbyqxmd.com/read/28728854/potential-use-of-american-college-of-radiology-bi-rads-mammography-atlas-for-reporting-and-assessing-lesions-detected-on-dedicated-breast-ct-imaging-preliminary-study
#1
Hae Kyoung Jung, Cherie M Kuzmiak, Keum Won Kim, Na Mi Choi, Hye Jeong Kim, Eun Lee Langman, Sora Yoon, Doreen Steen, Donglin Zeng, Fei Gao
RATIONALE AND OBJECTIVES: Dedicated breast computed tomography (DBCT) is an emerging and promising modality for breast lesions. The objective of this study was to evaluate the potential use of applying the BI-RADS Mammography Atlas 5th Edition for reporting and assessing breast lesions on DBCT. Currently, no atlas exists for DBCT. MATERIALS AND METHODS: Four radiologists trained in breast imaging were recruited in this institutional review board-approved, Health Insurance Portability and Accountability Act-compliant study...
July 17, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28711443/regional-distribution-of-pulmonary-blood-volume-with-dual-energy-computed-tomography-results-in-42-subjects
#2
Paul Felloni, Alain Duhamel, Jean-Baptiste Faivre, Jessica Giordano, Suonita Khung, Valérie Deken, Jacques Remy, Martine Remy-Jardin
RATIONALE AND OBJECTIVES: The noninvasive approach of lung perfusion generated from dual-energy computed tomography acquisitions has entered clinical practice. The purpose of this study was to analyze the regional distribution of iodine within distal portions of the pulmonary arterial bed on dual-source, dual-energy computed tomography examinations in a cohort of subjects without cardiopulmonary pathologies. MATERIALS AND METHODS: The study population included 42 patients without cardiorespiratory disease, enabling quantitative and qualitative analysis of pulmonary blood volume after administration of a 40% contrast agent...
July 12, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28705686/imaging-features-of-patients-undergoing-active-surveillance-for-ductal-carcinoma-in-situ
#3
Lars J Grimm, Sujata V Ghate, E Shelley Hwang, Mary Scott Soo
RATIONALE AND OBJECTIVES: The aim of this study was to describe the imaging appearance of patients undergoing active surveillance for ductal carcinoma in situ (DCIS). MATERIALS AND METHODS: We retrospectively identified 29 patients undergoing active surveillance for DCIS from 2009 to 2014. Twenty-two patients (group 1) refused surgery or were not surgical candidates. Seven patients (group 2) enrolled in a trial of letrozole and deferred surgical excision for 6-12 months...
July 10, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28693758/the-u-s-online-news-coverage-of-mammography-based-on-a-google-news-search
#4
REVIEW
Leng Leng Young Lin, Andrew B Rosenkrantz
RATIONALE AND OBJECTIVES: To characterize online news coverage relating to mammography, including articles' stance toward screening mammography. MATERIALS AND METHODS: Google News was used to search U.S. news sites over a 9-year period (2006-2015) based on the search terms "mammography" and "mammogram." The top 100 search results were recorded. Identified articles were manually reviewed. RESULTS: The top 100 news articles were from the following sources: local news outlet (50%), national news outlet (24%), nonimaging medical source (13%), entertainment or culture news outlet (6%), business news outlet (4%), peer-reviewed journal (1%), and radiology news outlet (1%)...
July 7, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28688577/re-association-between-imaging-characteristics-and-different-molecular-subtypes-of-breast-cancer
#5
LETTER
Xinyun Li, Yan Huang, Zhou Shuqin, Zhiguang Chen, Siwei Zhang
No abstract text is available yet for this article.
July 5, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28673453/high-ability-learners
#6
Richard B Gunderman
No abstract text is available yet for this article.
June 30, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28666725/implementation-of-upright-digital-breast-tomosynthesis-guided-stereotactic-biopsy
#7
Toma S Omofoye, Sarah Martaindale, Davis C Teichgraeber, Jay R Parikh
With growing adoption of digital breast tomosynthesis, an increasing number of imaging abnormalities are being identified only by tomosynthesis. Upright digital breast tomosynthesis-guided stereotactic biopsy is a proven method for sampling these abnormalities as well as abnormalities traditionally evaluated using conventional stereotactic biopsy. In this article, we describe the technique of upright digital breast tomosynthesis-guided stereotactic biopsy and outline a systematic operational approach to implementation of this technique in clinical radiology practices...
June 27, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28666724/-rounding-the-size-of-pulmonary-nodules-impact-of-rounding-methods-on-nodule-management-as-defined-by-the-2017-fleischner-society-guidelines
#8
Benedikt H Heidinger, Ursula Nemec, Kevin R Anderson, Daniel B Costa, Sidhu P Gangadharan, Paul A VanderLaan, Alexander A Bankier
RATIONALE AND OBJECTIVES: The objective of this study was to quantify the impact of different rounding methods on size measurements of pulmonary nodules and to determine the number of nodules that change management categories as a result of rounding. MATERIALS AND METHODS: For this retrospective institutional review board-approved study, we included 503 incidental pulmonary nodules (308 solid and 195 subsolid) from a data repository. Long and short axes were measured...
June 27, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28666723/the-reproducibility-of-changes-in-diagnostic-figures-of-merit-across-laboratory-and-clinical-imaging-reader-studies
#9
Frank W Samuelson, Craig K Abbey
RATIONALE AND OBJECTIVES: In this paper we examine which comparisons of reading performance between diagnostic imaging systems made in controlled retrospective laboratory studies may be representative of what we observe in later clinical studies. The change in a meaningful diagnostic figure of merit between two diagnostic modalities should be qualitatively or quantitatively comparable across all kinds of studies. MATERIALS AND METHODS: In this meta-study we examine the reproducibility of relative measures of sensitivity, false positive fraction (FPF), area under the receiver operating characteristic (ROC) curve, and expected utility across laboratory and observational clinical studies for several different breast imaging modalities, including screen film mammography, digital mammography, breast tomosynthesis, and ultrasound...
June 27, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28652049/evaluation-of-texture-analysis-parameter-for-response-prediction-in-patients-with-hepatocellular-carcinoma-undergoing-drug-eluting-bead-transarterial-chemoembolization-deb-tace-using-biphasic-contrast-enhanced-ct-image-data-correlation-with-liver-perfusion
#10
Christopher Kloth, Wolfgang M Thaiss, Rainer Kärgel, Rainer Grimmer, Jan Fritz, Sorin Dumitru Ioanoviciu, Dominik Ketelsen, Konstantin Nikolaou, Marius Horger
RATIONALE AND OBJECTIVES: This study aimed to evaluate the potential role of computed tomography texture analysis (CTTA) of arterial and portal-venous enhancement phase image data for prediction and accurate assessment of response of hepatocellular carcinoma undergoing drug-eluting bead transarterial chemoembolization (TACE) by comparison to liver perfusion CT (PCT). MATERIALS AND METHODS: Twenty-eight patients (27 male; mean age 67.2 ± 10.4) with 56 hepatocellular carcinoma-typical liver lesions were included...
June 23, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28652048/the-efficacy-of-low-intensity-vibration-to-improve-bone-health-in-patients-with-end-stage-renal-disease-is-highly-dependent-on-compliance-and-muscle-response
#11
Chamith S Rajapakse, Mary B Leonard, Elizabeth A Kobe, Michelle A Slinger, Kelly A Borges, Erica Billig, Clinton T Rubin, Felix W Wehrli
RATIONAL AND OBJECTIVES: Low intensity vibration (LIV) may represent a nondrug strategy to mitigate bone deficits in patients with end-stage renal disease. MATERIALS AND METHODS: Thirty end-stage renal patients on maintenance hemodialysis were randomized to stand for 20 minutes each day on either an active or placebo LIV device. Analysis at baseline and completion of 6-month intervention included magnetic resonance imaging (tibia and fibula stiffness; trabecular thickness, number, separation, bone volume fraction, plate-to-rod ratio; and cortical bone porosity), dual-energy X-ray absorptiometry (hip and spine bone mineral density [BMD]), and peripheral quantitative computed tomography (tibia trabecular and cortical BMD; calf muscle cross-sectional area)...
June 23, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28647389/improving-abnormality-detection-on-chest-radiography-using-game-like-reinforcement-mechanics
#12
Po-Hao Chen, Howard Roth, Maya Galperin-Aizenberg, Alexander T Ruutiainen, Warren Gefter, Tessa S Cook
RATIONALE AND OBJECTIVES: Despite their increasing prevalence, online textbooks, question banks, and digital references focus primarily on explicit knowledge. Implicit skills such as abnormality detection require repeated practice on clinical service and have few digital substitutes. Using mechanics traditionally deployed in video games such as clearly defined goals, rapid-fire levels, and narrow time constraints may be an effective way to teach implicit skills. MATERIALS AND METHODS: We created a freely available, online module to evaluate the ability of individuals to differentiate between normal and abnormal chest radiographs by implementing mechanics, including instantaneous feedback, rapid-fire cases, and 15-second timers...
June 21, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28647388/characterization-of-breast-masses-in-digital-breast-tomosynthesis-and-digital-mammograms-an-observer-performance-study
#13
Heang-Ping Chan, Mark A Helvie, Lubomir Hadjiiski, Deborah O Jeffries, Katherine A Klein, Colleen H Neal, Mitra Noroozian, Chintana Paramagul, Marilyn A Roubidoux
RATIONALE AND OBJECTIVES: This study aimed to compare Breast Imaging Reporting and Data System (BI-RADS) assessment of lesions in two-view digital mammogram (DM) to two-view wide-angle digital breast tomosynthesis (DBT) without DM. MATERIALS AND METHODS: With Institutional Review Board approval and written informed consent, two-view DBTs were acquired from 134 subjects and the corresponding DMs were collected retrospectively. The study included 125 subjects with 61 malignant (size: 3...
June 21, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28647387/practical-considerations-for-the-use-of-breast-mri-for-breast-cancer-evaluation-in-the-preoperative-setting
#14
Debra L Monticciolo
Preoperative contrast-enhanced (CE) breast magnetic resonance imaging (MRI) remains controversial in the newly diagnosed breast cancer patient. Additional lesions are frequently discovered in these patients with CE breast MRI. As staging and treatment planning evolve to include more information on tumor biology and aggression, so should our consideration of extent of disease. Directing CE breast MRI to those patients most likely to have additional disease may be beneficial. We sought to develop practical guidance for the use of preoperative CE breast MRI in the newly diagnosed breast cancer patient based on recent scientific data...
June 21, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28647386/the-importance-of-combined-teaching-methods-in-radiology-resident-education
#15
LETTER
Teresa Chapman, Janet R Reid, Erin E O'Connor
No abstract text is available yet for this article.
June 21, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28645458/pulmonary-3-he-magnetic-resonance-imaging-biomarkers-of-regional-airspace-enlargement-in-alpha-1-antitrypsin-deficiency
#16
Eric Lessard, Heather M Young, Anurag Bhalla, Damien Pike, Khadija Sheikh, David G McCormack, Alexei Ouriadov, Grace Parraga
RATIONALE AND OBJECTIVES: Thoracic x-ray computed tomography (CT) and hyperpolarized (3)He magnetic resonance imaging (MRI) provide quantitative measurements of airspace enlargement in patients with emphysema. For patients with panlobular emphysema due to alpha-1 antitrypsin deficiency (AATD), sensitive biomarkers of disease progression and response to therapy have been difficult to develop and exploit, especially those biomarkers that correlate with outcomes like quality of life. Here, our objective was to generate and compare CT and diffusion-weighted inhaled-gas MRI measurements of emphysema including apparent diffusion coefficient (ADC) and MRI-derived mean linear intercept (Lm) in patients with AATD, chronic obstructive pulmonary disease (COPD) ex-smokers, and elderly never-smokers...
June 20, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28645457/diagnostic-medical-imaging-in-pediatric-patients-and-subsequent-cancer-risk
#17
REVIEW
David J Mulvihill, Sachin Jhawar, John B Kostis, Sharad Goyal
The use of diagnostic medical imaging is becoming increasingly more commonplace in the pediatric setting. However, many medical imaging modalities expose pediatric patients to ionizing radiation, which has been shown to increase the risk of cancer development in later life. This review article provides a comprehensive overview of the available data regarding the risk of cancer development following exposure to ionizing radiation from diagnostic medical imaging. Attention is paid to modalities such as computed tomography scans and fluoroscopic procedures that can expose children to radiation doses orders of magnitude higher than standard diagnostic x-rays...
June 20, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28645456/andragogic-approaches-to-continuing-medical-education
#18
Christian W Cox, Richard B Gunderman
No abstract text is available yet for this article.
June 20, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28641934/radiology-resident-education-in-defense-of-the-socratic-method
#19
LETTER
Ciaran E Redmond, Gerard M Healy, Simon Clifford, Eric J Heffernan
No abstract text is available yet for this article.
June 19, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28595876/a-diagnostic-accuracy-meta-analysis-of-ct-and-mri-for-the-evaluation-of-small-bowel-crohn-disease
#20
Wenhong Liu, Jincai Liu, Wenlian Xiao, Guanghua Luo
RATIONALE AND OBJECTIVES: This study aimed to evaluate the diagnostic accuracy of magnetic resonance imaging (MRI) and computed tomography (CT) in assessing small bowel (SB) Crohn disease (CD). MATERIALS AND METHODS: We systematically searched PubMed, Elsevier, ScienceDirect, Karger, Web of Science, Wiley Online Library, and Springer for studies in which CT or MRI were evaluated to assess SB CD. Bivariate random effect meta-analytic methods were used to estimate pooled sensitivity, specificity, and receiver operating characteristic curves...
June 5, 2017: Academic Radiology
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