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Academic Radiology

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https://www.readbyqxmd.com/read/27919540/impact-of-the-addition-of-digital-breast-tomosynthesis-dbt-to-standard-2d-digital-screening-mammography-on-the-rates-of-patient-recall-cancer-detection-and-recommendations-for-short-term-follow-up
#1
Jaclynn L Powell, Jeffrey R Hawley, Adele M Lipari, Vedat O Yildiz, B Selnur Erdal, Selin Carkaci
RATIONALE AND OBJECTIVES: The addition of digital breast tomosynthesis (DBT) to digital screening mammography (DM) has been shown to decrease recall rates and improve cancer detection rates, but there is a lack of data regarding the impact of DBT on rates of short-term follow-up. We assessed possible changes in performance measures with the introduction of DBT at our facility. MATERIALS AND METHODS: In our observational study, databases were used to compare rates of recall, short-term follow-up, biopsy, and cancer detection between women undergoing DM without (n = 10,477) and women undergoing DM with (n = 2304) the addition of DBT...
December 2, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27916597/portraits-in-professionalism-jack-campbell-a-memorable-radiologist-with-a-conscience
#2
Richard B Gunderman, Saharnaz Tavoosi
No abstract text is available yet for this article.
December 2, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27916596/mastalgia-imaging-work-up-appropriateness
#3
Alison L Chetlen, Megha Madhukar Kapoor, Meredith Ranzenbach Watts
RATIONALE AND OBJECTIVES: Radiologists frequently image women with the sole complaint of mastalgia (breast pain). We hypothesized that whereas the vast majority of women ultimately have no imaging explanation for their breast pain, a small percentage of patients may have a correlative imaging finding and confirm the current American College of Radiology Appropriateness Criteria recommendations. MATERIALS AND METHODS: In this Health Insurance Portability and Accountability Act (HIPAA)-compliant, institutional review board-approved retrospective review, we evaluated 236 women between the ages of 18 and 83 years who presented to our Breast Care Center in 2013 with the sole complaint of breast pain or tenderness...
December 1, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27916595/the-relevance-of-ultrasound-imaging-of-suspicious-axillary-lymph-nodes-and-fine-needle-aspiration-biopsy-in-the-post-acosog-z11-era-in-early-breast-cancer
#4
Gopal R Vijayaraghavan, Srinivasan Vedantham, Milliam Kataoka, Carolynn DeBenedectis, Robert M Quinlan
RATIONALE AND OBJECTIVES: Evaluation of nodal involvement in early-stage breast cancers (T1 or T2) changed following the Z11 trial; however, not all patients meet the Z11 inclusion criteria. Hence, the relevance of ultrasound imaging of the axilla and fine-needle aspiration biopsy (FNA) in early-stage breast cancers was investigated. MATERIALS AND METHODS: In this single-center, retrospective study, 758 subjects had pathology-verified breast cancer diagnosis over a 3-year period, of which 128 subjects with T1 or T2 breast tumors had abnormal axillary lymph nodes on ultrasound, had FNA, and proceeded to axillary surgery...
December 1, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27916594/application-of-abbreviated-protocol-of-magnetic-resonance-imaging-for-breast-cancer-screening-in-dense-breast-tissue
#5
Shuang-Qing Chen, Min Huang, Yu-Ying Shen, Chen-Lu Liu, Chuan-Xiao Xu
RATIONALE AND OBJECTIVES: The study aimed to evaluate the usefulness of an abbreviated protocol (AP) of magnetic resonance imaging (MRI) in comparison to a full diagnostic protocol (FDP) of MRI in the breast cancer screening with dense breast tissue. MATERIALS AND METHODS: There are 478 female participants with dense breast tissue and negative mammography results, who were imaged with MRI using AP and FDP. The AP and FDP images were analyzed separately, and the sensitivity and specificity of breast cancer detection were calculated...
December 1, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27916593/clinical-application-of-dual-energy-spectral-computed-tomography-in-detecting-cholesterol-gallstones-from-surrounding-bile
#6
Chuang-Bo Yang, Shuang Zhang, Yong-Jun Jia, Hai-Feng Duan, Guang-Ming Ma, Xi-Rong Zhang, Yong Yu, Tai-Ping He
RATIONALE AND OBJECTIVE: This study aimed to investigate the clinical value of spectral computed tomography (CT) in the detection of cholesterol gallstones from surrounding bile. MATERIALS AND METHODS: This study was approved by the institutional review board. The unenhanced spectral CT data of 24 patients who had surgically confirmed cholesterol gallstones were analyzed. Lipid concentrations and CT numbers were measured from fat-based material decomposition image and virtual monochromatic image sets (40-140 keV), respectively...
December 1, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27913107/the-influence-of-iterative-reconstruction-on-coronary-artery-calcium-scoring-phantom-and-clinical-studies
#7
Seitaro Oda, Daisuke Utsunomiya, Takeshi Nakaura, Yoshinori Funama, Hideaki Yuki, Masafumi Kidoh, Kenichiro Hirata, Narumi Taguchi, Keiichi Honda, Hiroko Takaoka, Yuji Iyama, Kazuhiro Katahira, Katsuo Noda, Shuichi Oshima, Shinichi Tokuyasu, Yasuyuki Yamashita
RATIONALE AND OBJECTIVES: We compared the effect of iterative model reconstruction (IMR), filtered back projection (FBP), and hybrid iterative reconstruction (HIR) on coronary artery calcium (CAC) scoring. MATERIALS AND METHODS: CAC scans of 30 consecutive patients (18 men and 12 women, age 70.1 ± 12.2 years) were reconstructed with FBP, HIR, and IMR, and the image noise was measured on all images. Two radiologists independently measured the CAC scores using semiautomated software, and interobserver agreement was evaluated...
November 29, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27894707/missteps-in-current-estimates-of-cancer-overdiagnosis
#8
Christoph I Lee, Ruth Etzioni
The balance between the benefits and harms of imaging-based cancer screening continues to be an area of controversy and widespread media attention. Of the potential harms, overdiagnosis from screening is likely the most elusive in estimating and quantifying. This article describes the major methodological issues with recently reported estimates of overdiagnosis that are based on excess cancer incidence, and suggests that modeling focused on tumor lead-time can serve as a complementary method for excess incidence-based overdiagnosis estimates...
November 25, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27894706/improved-radiologists-efficiency-and-accuracy-with-the-application-of-scripting-software-for-the-automated-reporting-of-comparison-studies
#9
Russell O Kosik, Kevin K Lee, Young S Kang, Mahesh R Patel
RATIONALE AND OBJECTIVES: The American College of Radiology reporting guidelines state that "comparison with relevant examinations and reports should be part of the radiologic consultation and report when appropriate and available." MATERIALS AND METHODS: We evaluated the use of open-source Windows scripting software for the automated retrieval of the date and time of prior studies. RESULTS AND CONCLUSION: The date and time of the comparative study are transferred automatically to the present report in a structured voice recognition dictation system with a "regular expression substitution pattern" construct...
November 25, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27889399/a-natural-language-processing-based-model-to-automate-mri-brain-protocol-selection-and-prioritization
#10
Andrew D Brown, Thomas R Marotta
RATIONALE AND OBJECTIVES: Incorrect imaging protocol selection can contribute to increased healthcare cost and waste. To help healthcare providers improve the quality and safety of medical imaging services, we developed and evaluated three natural language processing (NLP) models to determine whether NLP techniques could be employed to aid in clinical decision support for protocoling and prioritization of magnetic resonance imaging (MRI) brain examinations. MATERIALS AND METHODS: To test the feasibility of using an NLP model to support clinical decision making for MRI brain examinations, we designed three different medical imaging prediction tasks, each with a unique outcome: selecting an examination protocol, evaluating the need for contrast administration, and determining priority...
November 23, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27888025/the-importance-of-role-models-in-increasing-women-in-radiology
#11
Richard B Gunderman, Jessica L Houk
No abstract text is available yet for this article.
November 22, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27888024/performance-of-photon-counting-breast-computed-tomography-digital-mammography-and-digital-breast-tomosynthesis-in-evaluating-breast-specimens
#12
Ann-Christin Rößler, Willi Kalender, Daniel Kolditz, Christian Steiding, Veikko Ruth, Caroline Preuss, Sandra Christina Peter, Barbara Brehm, Matthias Hammon, Rüdiger Schulz-Wendtland, Evelyn Wenkel
RATIONALE AND OBJECTIVES: This study compared a novel photon-counting breast computed tomography (pcBCT) system with digital mammography (DM) and digital breast tomosynthesis (DBT) systems. For this reason, surgical specimens were examined with all three techniques and rated by three observers. MATERIALS AND METHODS: A total of 30 surgical specimens were investigated with DM, DBT, and pcBCT; the associated images were shown to three experienced radiologists. Findings (22 microcalcifications and 23 mass lesions) were recorded and compared to the results of the pathological examination...
November 22, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27884465/crossing-the-chasm-s-demonstrating-the-clinical-value-of-hyperpolarized-gas-mri
#13
EDITORIAL
Bastiaan Driehuys
No abstract text is available yet for this article.
November 21, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27884464/estimating-the-area-under-roc-curve-when-the-fitted-binormal-curves-demonstrate-improper-shape
#14
Andriy I Bandos, Ben Guo, David Gur
RATIONALE AND OBJECTIVES: The "binormal" model is the most frequently used tool for parametric receiver operating characteristic (ROC) analysis. The binormal ROC curves can have "improper" (non-concave) shapes that are unrealistic in many practical applications, and several tools (eg, PROPROC) have been developed to address this problem. However, due to the general robustness of binormal ROCs, the improperness of the fitted curves might carry little consequence for inferences about global summary indices, such as the area under the ROC curve (AUC)...
November 21, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27876272/evaluation-of-rib-fractures-on-a-single-in-plane-image-reformation-of-the-rib-cage-in-ct-examinations
#15
Peter Dankerl, Hannes Seuss, Stephan Ellmann, Alexander Cavallaro, Michael Uder, Matthias Hammon
RATIONALE AND OBJECTIVES: This study aimed to evaluate the diagnostic performance of using a reformatted single-in-plane image reformation of the rib cage for the detection of rib fractures in computed tomography (CT) examinations, employing different levels of radiological experience. MATERIALS AND METHODS: We retrospectively evaluated 10 consecutive patients with and 10 patients without rib fractures, whose CT scans were reformatted to a single-in-plane image reformation of the rib cage...
November 18, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27876271/hiv-infection-is-independently-associated-with-increased-ct-scan-lung-density
#16
M Bradley Drummond, Allison A Lambert, Amira F Hussien, Cheng T Lin, Christian A Merlo, Robert A Wise, Gregory D Kirk, Robert H Brown
RATIONALE AND OBJECTIVES: Noninfectious pulmonary complications are common among HIV-infected individuals and may be detected early by quantitative computed tomography (CT) scanning. The association of HIV disease markers with CT lung density measurement remains poorly understood. MATERIALS AND METHODS: One hundred twenty-five participants free of spirometry-defined lung disease were recruited from a longitudinal cohort study of HIV-infected and HIV-uninfected individuals to undergo standardized CT scan of the chest...
November 18, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27863899/ct-angiography-post-processed-contrast-enhancement-for-improved-detection-of-pulmonary-embolism
#17
Daniela Muenzel, Alexander A Fingerle, Tina Zahel, Andreas Sauter, Alain Vlassenbroek, Martin Dobritz, Ernst J Rummeny, Peter B Noël
RATIONALE AND OBJECTIVES: The study aimed to improve the detection of pulmonary embolism via an iodine contrast enhancement tool in patients who underwent suboptimal enhanced computed tomography angiography (CTA). MATERIALS AND METHODS: We evaluated the CT examinations of 41 patients who underwent CTA for evaluation of the pulmonary arteries which suffered from suboptimal contrast enhancement. The contrast enhancement of the reconstructed images was increased via a post-processing tool (vContrast)...
November 15, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27863898/automated-3d-rendering-of-ribs-in-110-polytrauma-patients-strengths-and-limitations
#18
Suonita Khung, Pauline Masset, Alain Duhamel, Jean-Baptiste Faivre, Thomas Flohr, Jacques Remy, Martine Remy-Jardin
RATIONALE AND OBJECTIVES: To evaluate the strengths and limitations of a rib-unfolding software in a polytrauma context. MATERIALS AND METHODS: Chest computed tomography (CT) examinations of 110 patients were reviewed for specific detection of rib fractures using: (1) transverse CT sections ±  multiplanar reformattings (ie, the standard of reference), and (2) unfolded rib images reconstructed by the CT Bone Reading software with the possibility of rib analysis along their long axis and creation of standard orthogonal views in different orientations of any area suspected of fracture...
November 15, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27863897/fishing-and-the-radiologist
#19
Nathaniel B Linna, Richard B Gunderman
No abstract text is available yet for this article.
November 15, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27818005/immune-mediated-disease-in-ipilimumab-immunotherapy-of-melanoma-with-fdg-pet-ct
#20
REVIEW
Jason W Wachsmann, Ramapriya Ganti, Fangyu Peng
RATIONALE AND OBJECTIVES: The purposes of this study were to provide a case-based overview of various immune-mediated side effects detected by 18F-Fluorodeoxyglucose (F-18 FDG) positron emission tomography-computed tomography (PET-CT) in the patients receiving ipilimumab immunotherapy for treatment of malignant melanoma, and discuss the importance of recognizing immune-mediated side effects in the use of F-18 FDG PET-CT for monitoring therapeutic effects of ipilimumab on metastatic melanoma...
November 4, 2016: Academic Radiology
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