Evaluating Renal Fibrosis with R2* Histogram Analysis of the Whole Cortex in a Unilateral Ureteral Obstruction Model
Publication date: Available online 12 August 2018Source: Academic RadiologyAuthor(s): Tingting Zha, Xiaojun Ren, Zhaoyu Xing, Jinggang Zhang, Xiaojuan Tian, Yanan Du, Wei Xing, Jie ChenRationale and ObjectivesThe aim of this study was to use histogram analysis to assess the correlation between blood oxygen-level dependent magnetic resonance imaging (BOLD-MRI) and renal fibrosis induced by unilateral ureteral obstruction (UUO) in an animal model for a long experimental period.Materials and MethodsThe rabbits were randomly divided into a control group (n = 6) and a UUO group (n = 30). The rabbits in the UUO group und...
Source: Academic Radiology - August 13, 2018 Category: Radiology Source Type: research

Supporting Radiology Residents’ Professional Development Through a Competitive Intramural Grant
Publication date: Available online 12 August 2018Source: Academic RadiologyAuthor(s): Dexter Mendoza, Anna Holbrook, Frederic Bertino, Patricia Balthazar, Mary Newell, Carolyn C. MeltzerResearch and other scholarly activities are an important and required component of diagnostic radiology training. Several strategies, both at the departmental and the larger organizational levels, have been implemented to encourage radiology trainees to participate in these activities. In this article, we review and discuss our institution's 10-year experience in supporting the development and realization of scholarly projects through a com...
Source: Academic Radiology - August 12, 2018 Category: Radiology Source Type: research

Assessing Competence in Emergency Radiology Using an Online Simulator
ConclusionSimulation provides an opportunity to assess radiology resident performance across multiple domains. PGY-2 residents performed worse on the Medical Expert domains, although performance did not significantly vary between the other years. This may suggest that competence in Emergency Radiology is achieved early in residency, possibly related to the importance placed on developing skills related to on-call performance during the PGY-2 year. The simulator should be extended to other areas of Radiology, in order to assess the ability to discriminate performance in other subspecialties. (Source: Academic Radiology)
Source: Academic Radiology - August 10, 2018 Category: Radiology Source Type: research

Prediction of Cancer Masking in Screening Mammography Using Density and Textural Features
ConclusionThe optimal model predicts masking more accurately than density alone, suggesting that texture metrics may be useful in models to guide a stratified screening strategy. (Source: Academic Radiology)
Source: Academic Radiology - August 10, 2018 Category: Radiology Source Type: research

Practical Presentation Pearls: Evidence-based Recommendations From the Psychology and Physiology Literature
Publication date: Available online 9 August 2018Source: Academic RadiologyAuthor(s): Michael L. Richardson, Nicole E. Curci, Elizabeth M. Johnson, Diana L. Lam, James T. Lee, Rebecca T. SivarajahOral presentations remain a common teaching method in academic radiology. The goal of these presentations is to transfer knowledge from the presenter’s brain to brains in the audience in a way that sticks. A number of studies from the recent psychological and physiological literature offer some rather practical and evidence-based advice on ways to optimize our oral presentations. The purpose of this paper is to summarize this...
Source: Academic Radiology - August 10, 2018 Category: Radiology Source Type: research

Letter to the Editor: Women Representation on Radiology Journal Editorial Boards
Publication date: Available online 9 August 2018Source: Academic RadiologyAuthor(s): Prachi P. Agarwal, Sowmya Balasubramanian, Deborah Levine, Ella A Kazerooni, M Elizabeth Oates (Source: Academic Radiology)
Source: Academic Radiology - August 10, 2018 Category: Radiology Source Type: research

Clinical Efficacy of Spectral Computed Tomography for Evaluating Liver Function in Patients with Budd–Chiari Syndrome
Publication date: Available online 9 August 2018Source: Academic RadiologyAuthor(s): Lei Su, Lili Hu, Pan Liang, Yan Wu, Qiang Sun, Jianbo GaoRationale and ObjectivesTo analyze the clinical relevance of quantitative spectral parameters in evaluating the treatment of patients with Budd–Chiari syndrome (BCS) with different classes of liver function by comparing normalized iodine concentration (NIC) before and after BCS treatment.Materials and MethodsAngiographic data were obtained from 41 patients with confirmed BCS between December 2015 and March 2017. All patients underwent spectral computed tomography (CT) before an...
Source: Academic Radiology - August 9, 2018 Category: Radiology Source Type: research

Integration of Chest CT CAD into the Clinical Workflow and Impact on Radiologist Efficiency
ConclusionThis study provides an investigation of the impact of CAD and measurement on chest CTs within a clinical reporting workflow. Prepopulation of a report with automated nodule and aorta measurements yielded substantial time savings relative to manual measurement and entry. (Source: Academic Radiology)
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Canceled MRI-guided Breast Biopsies Due to Nonvisualization: Follow-up and Outcomes
ConclusionsThe majority of canceled MRI-guided biopsy lesions resolved on later follow-up; however, because of the small possibility of a missed malignancy, follow-up MRI imaging at 6 months is recommended. (Source: Academic Radiology)
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

An MRI-based Radiomics Classifier for Preoperative Prediction of Ki-67 Status in Breast Cancer
This study aims to investigate the value of a magnetic resonance imaging–based radiomics classifier for preoperatively predicting the Ki-67 status in patients with breast cancer.Materials and MethodsWe chronologically divided 318 patients with clinicopathologically confirmed breast cancer into a training dataset (n = 200) and a validation dataset (n = 118). Radiomics features were extracted from T2-weighted (T2W) and contrast-enhanced T1-weighted (T1+C) images of breast cancer. Radiomics feature selection and radiomics classifiers were generated using the least absolute shrinkage and selec...
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Communication Practices of Mammography Facilities and Timely Follow-up of a Screening Mammogram with a BI-RADS 0 Assessment
ConclusionsOur findings support the value of telephone communication to patients in relation to timely follow-up. Future research is needed to evaluate the role of communication in completing the breast cancer screening episode. (Source: Academic Radiology)
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Intravoxel Incoherent Motion Diffusion-weighted MR Imaging for Early Evaluation of the Effect of Radiofrequency Ablation in Rabbit Liver VX2 Tumors
This study aims to investigate the value of intravoxel incoherent motion (IVIM)-derived parameters for early evaluation of the efficiency of radiofrequency ablation (RFA) treatment for rabbit liver VX2 tumor.Materials and MethodsEighteen rabbit liver VX2 tumor models were constructed, and computed tomography–guided RFA was performed. One day before and 7 days after RFA, 18 models underwent magnetic resonance imaging, including contrast-enhanced imaging and IVIM diffusion-weighted imaging with 16 b-factors (0–1000 s/mm2). Post-RFA liver tumors were segmented into viable tumor, inflammatory reaction, and a...
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

A Dynamic Graph Cuts Method with Integrated Multiple Feature Maps for Segmenting Kidneys in 2D Ultrasound Images
Publication date: September 2018Source: Academic Radiology, Volume 25, Issue 9Author(s): Qiang Zheng, Steven Warner, Gregory Tasian, Yong FanRationale and ObjectivesAutomatic segmentation of kidneys in ultrasound (US) images remains a challenging task because of high speckle noise, low contrast, and large appearance variations of kidneys in US images. Because texture features may improve the US image segmentation performance, we propose a novel graph cuts method to segment kidney in US images by integrating image intensity information and texture feature maps.Materials and MethodsWe develop a new graph cuts-based method to...
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Reinforcing the Importance and Feasibility of Implementing a Low-dose Protocol for CT-guided Biopsies
This study sought to more definitely illustrate the impact and feasibility of implementing a low-dose protocol for computed tomography (CT)-guided biopsies using size-specific dose estimates and multivariate analyses.Materials and MethodsFifty consecutive CT-guided lung and extrapulmonary biopsies were reviewed before and after implementation of a low-dose protocol (200 patients total, mean age 61 ± 15 years, 128 women). Analyses of variance with Bonferroni correction were used to compare standard and low-dose protocols in terms of patient demographics, physician experience, target lesion size, total d...
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Incidental Thyroid Nodules in the National Lung Screening Trial: Estimation of Prevalence, Malignancy Rate, and Strategy for Workup
ConclusionsLess than 1% of subjects in the NLST had reported ITNs. The true prevalence of ITNs was estimated to be 11.8%, which provides a better approximation of the number of patients who could potentially receive workup. A 20-mm rather than a 10-mm cutoff would reduce the workup rate by almost 50% while still capturing all malignancies. (Source: Academic Radiology)
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Neurometabolites Alteration in the Acute Phase of Mild Traumatic Brain Injury (mTBI): An In Vivo Proton Magnetic Resonance Spectroscopy (1H-MRS) Study
Publication date: September 2018Source: Academic Radiology, Volume 25, Issue 9Author(s): Vigneswaran Veeramuthu, Pohchoo Seow, Vairavan Narayanan, Jeannie Hsiu Ding Wong, Li Kuo Tan, Aditya Tri Hernowo, Norlisah RamliRationale and ObjectivesMagnetic resonance spectroscopy is a noninvasive imaging technique that allows for reliable assessment of microscopic changes in brain cytoarchitecture, neuronal injuries, and neurochemical changes resultant from traumatic insults. We aimed to evaluate the acute alteration of neurometabolites in complicated and uncomplicated mild traumatic brain injury (mTBI) patients in comparison to c...
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Computed Tomography Window Blending: Feasibility in Thoracic Trauma
This study aims to demonstrate the feasibility of processing computed tomography (CT) images with a custom window blending algorithm that combines soft-tissue, bone, and lung window settings into a single image; to compare the time for interpretation of chest CT for thoracic trauma with window blending and conventional window settings; and to assess diagnostic performance of both techniques.Materials and MethodsAdobe Photoshop was scripted to process axial DICOM images from retrospective contrast-enhanced chest CTs performed for trauma with a window-blending algorithm. Two emergency radiologists independently interpreted t...
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Machine Learning Algorithms Utilizing Quantitative CT Features May Predict Eventual Onset of Bronchiolitis Obliterans Syndrome After Lung Transplantation
Publication date: September 2018Source: Academic Radiology, Volume 25, Issue 9Author(s): Eduardo J. Mortani Barbosa, Maarten Lanclus, Wim Vos, Cedric Van Holsbeke, William De Backer, Jan De Backer, James LeeRationale and ObjectivesLong-term survival after lung transplantation (LTx) is limited by bronchiolitis obliterans syndrome (BOS), defined as a sustained decline in forced expiratory volume in the first second (FEV1) not explained by other causes. We assessed whether machine learning (ML) utilizing quantitative computed tomography (qCT) metrics can predict eventual development of BOS.Materials and MethodsPaired inspirat...
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Current Advances in COPD Imaging
ConclusionAdvanced imaging techniques play a vital role in expanding our current understanding of COPD. (Source: Academic Radiology)
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Downstream Costs Associated with Incidental Pulmonary Nodules Detected on CT
ConclusionDownstream costs for incidental pulmonary nodules are highly variable and particularly high when ordering physicians over-manage relative to radiologist recommendations and Fleischner Society guidelines. To reduce unnecessary utilization and cost from over-management, radiologists may need to assume a greater role in partnering with ordering physicians to ensure appropriate, guideline-adherent, and follow-up testing. (Source: Academic Radiology)
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Low-Dose Coronary CT Angiography in Patients with Atrial Fibrillation: Comparison of Image Quality and Radiation Exposure with Two Different Approaches
Publication date: Available online 6 August 2018Source: Academic RadiologyAuthor(s): Saima Mushtaq, Gianluca Pontone, Edoardo Conte, Marco Guglielmo, Elisa Consiglio, Marco Magatelli, Margarida Oliveira, Giuseppe Muscogiuri, Andrea Annoni, Andrea Baggiano, Alberto Formenti, Maria Elisabetta Mancini, Luca Di Odoardo, Eleonora Melotti, Cesare Fiorentini, Antonio L. Bartorelli, Mauro Pepi, Daniele AndreiniRationale and ObjectivesTo evaluate image quality, coronary interpretability and radiation exposure of coronary CT angiography (CCTA) performed in patients with atrial fibrillation (AF) with the latest scanner generation, co...
Source: Academic Radiology - August 8, 2018 Category: Radiology Source Type: research

Hyperpolarized Gas Magnetic Resonance Imaging of Pediatric Cystic Fibrosis Lung Disease
This article presents the current state of CF diagnosis and treatment and describes the potential role of HP gas MRI for detection of early CF lung disease and following the effects of interventions. The typical HP gas imaging workflow is described, along with a discussion of image analysis to calculate VDP, dosing considerations, and the reproducibility of VDP.The potential use of VDP as an outcome measure in CF is discussed, by considering the correlation with pulmonary function measures, preliminary interventional studies, and case studies involving longitudinal imaging and pulmonary exacerbations.Finally, emerging HP g...
Source: Academic Radiology - August 5, 2018 Category: Radiology Source Type: research

Whole-Tumor Quantitative Apparent Diffusion Coefficient Histogram and Texture Analysis to Differentiation of Minimal Fat Angiomyolipoma from Clear Cell Renal Cell Carcinoma
Publication date: Available online 5 August 2018Source: Academic RadiologyAuthor(s): Haojie Li, Anqin Li, Hui Zhu, Yao Hu, Jiali Li, Liming Xia, Daoyu Hu, Ihab R. Kamel, Zhen LiAimTo evaluate the diagnostic value of whole-tumor quantitative apparent diffusion coefficient (ADC) histogram and texture analysis for differentiation of minimal fat angiomyolipoma (MFAML) from clear cell renal cell carcinoma (ccRCC).Materials and MethodsWe retrospectively reviewed 27 patients with MFAML and 113 patients with ccRCC pathologically proven. All patients performed magnetic resonance imaging (MRI) including diffusion-weighted imaging (b...
Source: Academic Radiology - August 5, 2018 Category: Radiology Source Type: research

Probing Changes in Lung Physiology in COPD Using CT, Perfusion MRI, and Hyperpolarized Xenon-129 MRI
Publication date: Available online 5 August 2018Source: Academic RadiologyAuthor(s): Kun Qing, Nicholas J. Tustison, John P. Mugler, Jaime F. Mata, Zixuan Lin, Li Zhao, Da Wang, Xue Feng, Ji Young Shin, Sean J. Callahan, Michael P. Bergman, Kai Ruppert, Talissa A. Altes, Joanne M. Cassani, Y. Michael ShimRationale and ObjectivesChronic obstructive pulmonary disease (COPD) is highly heterogeneous and not well understood. Hyperpolarized xenon-129 (Xe129) magnetic resonance imaging (MRI) provides a unique way to assess important lung functions such as gas uptake. In this pilot study, we exploited multiple imaging modalities, ...
Source: Academic Radiology - August 5, 2018 Category: Radiology Source Type: research

Resident Case Volume Correlates with Clinical Performance: Finding the Sweet Spot
ConclusionThe total number of studies interpreted during radiology training correlates with performance. Residencies should endeavor to find the “sweet spot”: the amount of work that maximizes clinical exposure and knowledge without overburdening trainees. (Source: Academic Radiology)
Source: Academic Radiology - August 5, 2018 Category: Radiology Source Type: research

A Model for Predicting Future FEV1 Decline in Smokers Using Hyperpolarized 3He Magnetic Resonance Imaging
ConclusionThe imaging predication model generated from measurements obtained during 3He MR imaging is better able to predict future FEV1 decline compared to one based on current clinical tests and demographics. The imaging model's superiority appears to arise from its ability to distinguish well-circumscribed, severe disease from a more uniform distribution of moderately altered lung function, which is more closely associated with subsequent FEV1 decline. (Source: Academic Radiology)
Source: Academic Radiology - August 5, 2018 Category: Radiology Source Type: research

CT and 18F- FDG-PET-CT Findings in Secondary Adrenal Lymphoma with Pathologic Correlation
ConclusionSecondary adrenal lymphomas usually manifest as, large (>3 cm), well-defined, homogenously or slightly heterogeneously enhancing masses on CT with preserved adreniform shape. These lesions tend to show limited wash-out and high fludeoxyglucose (FDG) uptake. (Source: Academic Radiology)
Source: Academic Radiology - August 1, 2018 Category: Radiology Source Type: research

Addressing Burnout in Radiologists
Publication date: Available online 31 July 2018Source: Academic RadiologyAuthor(s): Alison L. Chetlen, Tiffany L. Chan, David H. Ballard, L. Alexandre Frigini, Andrea Hildebrand, Shannon Kim, James M. Brian, Elizabeth A. Krupinski, Dhakshinamoorthy GaneshanBurnout is a global health problem affecting physicians across all medical specialties. Radiologists, in particular, experience high rates of burn out, and this trend has only continued to worsen. The “Promoting Health and Wellness for Radiologists Task Force of the Association of University Radiologists—Radiology Research Alliance” presents a review of...
Source: Academic Radiology - August 1, 2018 Category: Radiology Source Type: research

Implementing Contrast Reaction Management Training for Residents Through High-Fidelity Simulation
ConclusionThese results suggest that incorporating high-fidelity contrast reaction management simulation into resident education improves both residents' knowledge and comfort in managing reactions. We have therefore incorporated annual contrast reaction simulation as a standard component of our residency curriculum. (Source: Academic Radiology)
Source: Academic Radiology - August 1, 2018 Category: Radiology Source Type: research

Transfer Learning From Convolutional Neural Networks for Computer-Aided Diagnosis: A Comparison of Digital Breast Tomosynthesis and Full-Field Digital Mammography
ConclusionDBT performed significantly better than FFDM in the merged view classification of mass and ARD lesions. The increased performance suggests that the information extracted by the CNN from DBT images may be more relevant to lesion malignancy status than the information extracted from FFDM images. Therefore, this study provides supporting evidence for the efficacy of computer-aided diagnosis on DBT in the evaluation of mass and ARD lesions. (Source: Academic Radiology)
Source: Academic Radiology - August 1, 2018 Category: Radiology Source Type: research

Low Iodine Contrast Injection for CT Acquisition Prior to Transcatheter Aortic Valve Replacement: Aorta Assessment and Screening for Coronary Artery Disease
Publication date: Available online 1 August 2018Source: Academic RadiologyAuthor(s): Anne-Lise Hachulla, Stéphane Noble, Maxime Ronot, Gabriel Guglielmi, Thomas de Perrot, Xavier Montet, Jean-Paul ValléeRationale and ObjectivesTo assess both the complete aorta and coronary artery disease (CAD) using low iodine contrast computed-tomography angiography before transcatheter aortic valve replacement.Materials and Methods84 patients underwent computed-tomography angiography before transcatheter aortic valve replacement: 42 with standard iodine injection protocol (P1:120 mL); 42 with a low dose iodine injection pro...
Source: Academic Radiology - August 1, 2018 Category: Radiology Source Type: research

Motor Cortex Mapping in Patients With Hepatic Myelopathy After Transjugular Intrahepatic Portosystemic Shunt
Publication date: Available online 1 August 2018Source: Academic RadiologyAuthor(s): Long-Biao Cui, Shuyao Ren, Yi-Bin Xi, Ling-Li Zeng, Gang Chen, Kang Liu, Tianlei Yu, Chuangye He, Wengang Guo, Zhanxin Yin, Zhengyu Wang, Jing Niu, Bohan Luo, Dewen Hu, Guohong Han, Hong YinRationale and ObjectivesAs a special movement disorder, hepatic myelopathy (HM) is characterized by spastic paraperesis and may be secondary to transjugular intrahepatic portosystemic shunt (TIPS). The prediction and diagnosis of HM is difficult due to largely unknown neuropathological underpinnings and a lack of specific biomarkers. We aimed to delve i...
Source: Academic Radiology - August 1, 2018 Category: Radiology Source Type: research

Magnetic Resonance Diffusion Kurtosis Imaging for Evaluating Stage of Liver Fibrosis in a Rabbit Model
This study aimed to investigate association of liver DKI derived parameter with stage of liver fibrosis.Materials and MethodsFifty-six healthy New Zealand white rabbits were enrolled into this study, among which 48 rabbits were randomly given carbon tetrachloride to model liver fibrosis, and 8 rabbits treated with normal saline served as control subjects. All rabbits underwent liver DKI followed by biopsy to stage fibrosis (stages F0–F4) on 6th, 8th, 10th, and 12th weekends after initiation of modeling fibrosis. Mean kurtosis (MK), fractional anisotropy (FA), and mean diffusion (MD) were derived from DKI data. Statis...
Source: Academic Radiology - July 31, 2018 Category: Radiology Source Type: research

Convolutional Neural Network Based Breast Cancer Risk Stratification Using a Mammographic Dataset
Publication date: Available online 31 July 2018Source: Academic RadiologyAuthor(s): Richard Ha, Peter Chang, Jenika Karcich, Simukayi Mutasa, Eduardo Pascual Van Sant, Michael Z. Liu, Sachin JambawalikarRationale and ObjectivesWe propose a novel convolutional neural network derived pixel-wise breast cancer risk model using mammographic dataset.Materials and MethodsAn institutional review board approved retrospective case-control study of 1474 mammographic images was performed in average risk women. First, 210 patients with new incidence of breast cancer were identified. Mammograms from these patients prior to developing br...
Source: Academic Radiology - July 31, 2018 Category: Radiology Source Type: research

Systematic Review of the Literature: Best Practices
This article provides a detailed and practical guide for performing a systematic review and discusses its applications in radiology. (Source: Academic Radiology)
Source: Academic Radiology - July 31, 2018 Category: Radiology Source Type: research

Quantification of Myocardial Enhancement on Cine-MRI: Diagnostic Value in Cardiac Amyloidosis
ConclusionPercentage ME obtained from pre and post contrast cine imaging is correlated to LGE extent and myocardial T1 and may represent an additional diagnostic parameter to consider CA in patients with LVH. (Source: Academic Radiology)
Source: Academic Radiology - July 31, 2018 Category: Radiology Source Type: research

Potential Complementary Value of Noncontrast and Contrast Enhanced CT Radiomics in Colorectal Cancers
Publication date: Available online 31 July 2018Source: Academic RadiologyAuthor(s): Bogdan Badic, Marie Charlotte Desseroit, Mathieu Hatt, Dimitris VisvikisRationale and ObjectivesThe aim of our study was to assess the relationships between textural features extracted from contrast enhanced (CE) and noncontrast enhanced (NCE) computed tomography (CT) images of primary colorectal cancer, in order to identify radiomics features more likely to provide potential complementary information regarding outcome.Materials and MethodsSixty-one patients with primary colorectal cancer underwent both CE-CT and NCE-CT scans within the sam...
Source: Academic Radiology - July 31, 2018 Category: Radiology Source Type: research

Optimization of Monoenergetic Extrapolations in Dual-Energy CT for Metal Artifact Reduction in Different Body Regions and Orthopedic Implants
ConclusionDECT significantly reduces image artifacts in patients with orthopedic hardware and prospective choice of ME at 130 keV may suit best for optimal MAR, independent of region or implant. (Source: Academic Radiology)
Source: Academic Radiology - July 31, 2018 Category: Radiology Source Type: research

Efficacy of 3D Printed Models on Resident Learning and Understanding of Common Acetabular Fracturers
Conclusion3D printed models promise as an effective educational tool for resident learning with respect to acetabular fractures, improving short-term understanding of complex anatomy and classification systems. (Source: Academic Radiology)
Source: Academic Radiology - July 31, 2018 Category: Radiology Source Type: research

Postoperative CT of the Mandible Following Trauma: Review of Normal Appearances and Common Complications
ConclusionWe provide a comprehensive review of both the desired and untoward CT findings after surgical repair of traumatic mandibular injuries. (Source: Academic Radiology)
Source: Academic Radiology - July 31, 2018 Category: Radiology Source Type: research

Radiology Field Trips—A List of “Must Sees” in the Radiology Department for Medical Students: How We Do It
ConclusionThis article describes the integration of nine field trip experiences into a 4-week radiology clerkship and its effect on learning outcomes and student satisfaction. (Source: Academic Radiology)
Source: Academic Radiology - July 31, 2018 Category: Radiology Source Type: research

Lesion Nonvisualization at MRI-Guided Breast Biopsy: Now What?
Publication date: Available online 29 July 2018Source: Academic RadiologyAuthor(s): Colleen H. Neal (Source: Academic Radiology)
Source: Academic Radiology - July 29, 2018 Category: Radiology Source Type: research

Can Quantitative Volumetric Analysis Predict Tumor Recurrence in the Patients with Mucinous Adenocarcinoma of the Lung After Surgical Resection?
Publication date: Available online 29 July 2018Source: Academic RadiologyAuthor(s): Jae-Kwang Lim, Kyung Min Shin, Hui Joong Lee, Hoseok Lee, Myong Hun Hahm, Jaehee Lee, Chang Ho Kim, Seung Ick Cha, Ji Yun Jeong, Tae-In ParkRationale and ObjectivesMucinous adenocarcinoma (MAC) is a distinct histologic variant subtype of lung adenocarcinomas. However, detailed radiologic findings and prognostic factors are still poorly understood. Thus, this study aimed to investigate the prognostic value of quantitative volumetric analysis of the computed tomography images of patients with MAC after. surgical resection.Materials and Method...
Source: Academic Radiology - July 29, 2018 Category: Radiology Source Type: research

Enhancement of Musculoskeletal Radiology Resident Education with the Use of an Individual Smart Portable Ultrasound Device (iSPUD)
Publication date: Available online 29 July 2018Source: Academic RadiologyAuthor(s): Troy H. Maetani, Cody Schwartz, Robert J. Ward, Daniel B. NissmanRationale and ObjectivesMany medical specialties have incorporated portable ultrasound into their educational curriculum. Our objective was to determine the utility of an individual smart portable ultrasound device (iSPUD) as an educational tool in resident and fellowship Musculoskeletal Radiology training.Materials and MethodsAfter Institutional Review Board approval, volunteer radiology trainees were instructed to use the iSPUD (Philips Lumify ultrasound probe and Samsung Ga...
Source: Academic Radiology - July 29, 2018 Category: Radiology Source Type: research

Benefits of Independent Double Reading in Digital Mammography: A Theoretical Evaluation of All Possible Pairing Methodologies
Publication date: Available online 29 July 2018Source: Academic RadiologyAuthor(s): Patrick C. Brennan, Aarthi Ganesan, Miguel P. Eckstein, Ernest Usang Ekpo, Kriscia Tapia, Claudia Mello-Thoms, Sarah Lewis, Mordechai Z. JuniRationale and ObjectivesTo establish the efficacy of pairing readers randomly and evaluate the merits of developing optimal pairing methodologies.Materials and MethodsSensitivity, specificity, and proportion correct were computed for three different case sets that were independently read by 16 radiologists. Performance of radiologists as single readers was compared to expected double reading performanc...
Source: Academic Radiology - July 29, 2018 Category: Radiology Source Type: research

Multiparametric MRI Characterization of Funaki Types of Uterine Fibroids Considered for MR-Guided High-Intensity Focused Ultrasound (MR-HIFU) Therapy
Publication date: Available online 29 July 2018Source: Academic RadiologyAuthor(s): Sajan Andrews, Qing Yuan, April Bailey, Yin Xi, Rajiv Chopra, Robert Staruch, Ivan PedrosaRationale and ObjectivesTo compare quantitative multiparametric magnetic resonance imaging (mpMRI) data of symptomatic uterine fibroids being considered for MR-guided high-intensity focused ultrasound ablation with fibroid characterization based on the Funaki Classification scheme.Materials and MethodsThis was a prospective, Institutional Review Board -approved, Health Insurance Portability, and Accountability Act-compliant study. Informed consent was ...
Source: Academic Radiology - July 29, 2018 Category: Radiology Source Type: research

Radiogenomics of Clear Cell Renal Cell Carcinoma: Associations Between mRNA-Based Subtyping and CT Imaging Features
ConclusionsThis preliminary radiogenomics analysis of clear-cell renal cell carcinoma revealed associations between CT features and mRNA-based subtyping which warrant further investigation and validation. (Source: Academic Radiology)
Source: Academic Radiology - July 29, 2018 Category: Radiology Source Type: research

Comparison of Resource Utilization and Clinical Outcomes Following Screening with Digital Breast Tomosynthesis Versus Digital Mammography: Findings From a Learning Health System
ConclusionDBT demonstrated a more efficient screening pathway and improved quality measures with lower recall rates in all patient types, reduced diagnostic mammography and shorter time to biopsy and final diagnosis. (Source: Academic Radiology)
Source: Academic Radiology - July 27, 2018 Category: Radiology Source Type: research

Spatial Heterogeneity of Lung Strain and Aeration and Regional Inflammation During Early Lung Injury Assessed with PET/CT
Publication date: Available online 26 July 2018Source: Academic RadiologyAuthor(s): Gabriel Motta-Ribeiro, Tilo Winkler, Soshi Hashimoto, Vidal MeloIntroductionSpatial heterogeneity of lung aeration and strain (change volume/resting volume) occurs at microscopic levels and contributes to lung injury. Yet, it is mostly assessed with histograms or large regions-of-interest. Spatial heterogeneity could also influence regional gene expression. We used positron emission tomography (PET)/computed tomography (CT) to assess the contribution of different length-scales to mechanical heterogeneity and to direct lung injury biological...
Source: Academic Radiology - July 27, 2018 Category: Radiology Source Type: research

Voxel-Wise Longitudinal Parametric Response Mapping Analysis of Chest Computed Tomography in Smokers
ConclusionA voxel-wise longitudinal PRM analytic approach can identify patterns of disease progression in smokers with and without chronic obstructive pulmonary disease. (Source: Academic Radiology)
Source: Academic Radiology - July 26, 2018 Category: Radiology Source Type: research