The Diffusion Tensor Imaging Properties of the Normal Testicles at 3 Tesla Magnetic Resonance Imaging
ConclusionThe diffusivity of the normal testicles is relatively slow, closed-to isotropic and hardly affected by the low b-values regime exclusion. Thus, DTI parameters of the normal testicles are neither dictated by the underlying architectural anisotropy nor microperfusion effects. (Source: Academic Radiology)
Source: Academic Radiology - October 13, 2018 Category: Radiology Source Type: research

Whole Lesion Histogram Analysis Derived From Morphological MRI Sequences Might be Able to Predict EGFR- and Her2-Expression in Cervical Cancer
ConclusionsHistogram analysis parameters of T1-weighted and T2-weighted images reflect HER2 status and EGFR expression in cervical cancer. Histogram parameters cannot predict cell count, proliferation index, or angiogenesis related histopathological features. (Source: Academic Radiology)
Source: Academic Radiology - October 12, 2018 Category: Radiology Source Type: research

Utility of 13N-Ammonia PET/CT to Detect Pituitary Tissue in Patients with Pituitary Adenomas
Publication date: Available online 12 October 2018Source: Academic RadiologyAuthor(s): Zongming Wang, Zhigang Mao, Xiangsong Zhang, Dongsheng He, Xin Wang, Qiu Du, Zheng Xiao, Diming Zhu, Yonghong Zhu, Haijun WangRationale and ObjectivesIt is clinically essential, but sometimes challenging, to distinguish pituitary tissue from pituitary adenomas (PAs). It is helpful to avoid damage of pituitary tissue during management. We evaluated the ability of 13N-ammonia positron emission tomography (PET)/computed tomography (CT) to locate and distinguish pituitary tissue from PAs.Materials and MethodsForty-eight patients (four with p...
Source: Academic Radiology - October 12, 2018 Category: Radiology Source Type: research

Radiologic and Pathologic Features Associated With Upgrade of Atypical Ductal Hyperplasia at Surgical Excision
Publication date: Available online 12 October 2018Source: Academic RadiologyAuthor(s): Kristin E. Williams, Amanda Amin, Jacqueline Hill, Carissa Walter, Marc Inciardi, Jason Gatewood, Mark Redick, Jo Wick, Suzanne Hunt, Onalisa WinbladRationale and ObjectivesTo evaluate radiologic and pathologic features associated with upgrade of atypical ductal hyperplasia (ADH) to ductal carcinoma in situ or invasive breast cancer at surgical excision, in order to identify patients who may consider alternatives to excision.Materials and MethodsThis retrospective analysis examined patients who underwent surgical excision of biopsy-prove...
Source: Academic Radiology - October 12, 2018 Category: Radiology Source Type: research

Influence of Data Parsing on Contrast Enhanced Ultrasound Exams
Publication date: Available online 10 October 2018Source: Academic RadiologyAuthor(s): Jingzhi Li, Laurence Needleman, Ji-Bin Liu, Andrej Lyshchik, Flemming Forsberg, Maria Stanczak, James McAlister, John EisenbreyRationale and ObjectivesTo explore the influence of data parsing (either selection of frames at set time intervals or by an experienced sonographer) of contrast-enhanced ultrasound (CEUS) exams on physician diagnoses and confidence levels.Materials and MethodsForty consecutive CEUS exams consisting of 10 cases each of indeterminate liver lesions, indeterminate renal lesions, renal cell carcinoma postablation foll...
Source: Academic Radiology - October 11, 2018 Category: Radiology Source Type: research

Automated Test-Item Generation System for Retrieval Practice in Radiology Education
ConclusionAIG enabled self-testing is technically feasible, and is perceived positively by radiology residents as useful to their education. (Source: Academic Radiology)
Source: Academic Radiology - October 11, 2018 Category: Radiology Source Type: research

The Role of Transrectal Ultrasound for Finding Focal Lesions in Prostate Cancer Detection Compared to Systematic Sextant Biopsy
ConclusionIn conclusion, searching focal lesion by TRUS is useful for improving the positive biopsy rate and risk stratification of PCa compared to systematic sextant biopsy without careful TRUS examination. (Source: Academic Radiology)
Source: Academic Radiology - October 11, 2018 Category: Radiology Source Type: research

Response to: Letter to the Editor Regarding Survey Research: A Primer for the Academic Radiologist
Publication date: Available online 11 October 2018Source: Academic RadiologyAuthor(s): Prasad R Shankar, Katherine E Maturen (Source: Academic Radiology)
Source: Academic Radiology - October 11, 2018 Category: Radiology Source Type: research

Continued Validation of Ultrasound Guidance Targeting Tasks: Assessment of Internal Structure
ConclusionStudent performance on the targeting tasks improved markedly after training and persisted for several months. The interrater and intrarater reliability were excellent, while the test–retest reliability was good. This provides additional validity evidence for our novel ultrasound-guided invasive procedure targeting curriculum. (Source: Academic Radiology)
Source: Academic Radiology - October 11, 2018 Category: Radiology Source Type: research

Radiology Research at the Cutting Edge for a Better Future
Publication date: Available online 9 October 2018Source: Academic RadiologyAuthor(s): Linda Probyn (Source: Academic Radiology)
Source: Academic Radiology - October 10, 2018 Category: Radiology Source Type: research

Separating High-Z Oral Contrast From Intravascular Iodine Contrast in an Animal Model Using Dual-Layer Spectral CT
ConclusionsDual-layer DECT can separate iodine from certain high-Z elements using water equivalent and iodine equivalent images with an increased element range compared to other DECT systems. This K-edge effect could promote the development and approval of new high-Z contrast agents for DECT. (Source: Academic Radiology)
Source: Academic Radiology - October 10, 2018 Category: Radiology Source Type: research

Management of BIRADS 3, 4A, and 4B Lesions Diagnosed as Pure Papilloma by Ultrasound-Guided Core Needle Biopsy: Is Surgical Excision Necessary?
Publication date: Available online 6 October 2018Source: Academic RadiologyAuthor(s): Sean D. Raj, Jordana Phillips, Tejas S. Mehta, Liza M. Quintana, Michael D. Fishman, Vandana Dialani, Priscilla J. SlanetzRationale and ObjectivesThere is lack of consensus on managing papillomas due to varied upgrade rates in the literature related to variability in the studied populations. We specifically studied upgrade rates of pure papilloma diagnosed with ultrasound core biopsy (UCB) using spring-loaded (SLB) and vacuum-assisted (VAB) biopsy devices in patients with low-to-intermediate pre-test probability for malignancy on imaging....
Source: Academic Radiology - October 6, 2018 Category: Radiology Source Type: research

The role of diffusion weighted imaging as supplement to dynamic contrast enhanced breast MRI: Can it help predict malignancy, histologic grade and recurrence?
ConclusionADC value is important factor in distinguishing malignancy, differentiating tumors with higher Oncotype score, and PR negativity. Therefore, it can be used as an important tool to assist appropriate treatment selection. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

The Time to and Type of Pancreatic Cancer Recurrence after Surgical Resection: Is Prediction Possible?
Publication date: Available online 22 September 2018Source: Academic RadiologyAuthor(s): Jelena Djokić Kovač, Philipp Mayer, Thilo Hackert, Miriam KlaussRationale and ObjectivesTo evaluate factors predicting pancreatic cancer recurrence, and to determine the most common appearance of tumor relapse.Materials and MethodsNinety patients with recurrent pancreatic cancer were retrospectively included in the study. 74.4% had pancreatic head tumors (group 1) and 25.6% pancreatic body and/or tail tumor (group 2). The tumor localization, operative technique, TNM stage, the R-status, tumor grade, lymphovascular, and perineural inv...
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Raising the BAR: Challenges, Opportunities, and Hidden Gems in Radiology Education
ConclusionsConclusion: Curriculum revision in UME radiology education creates both challenges and opportunities and this paper explores these issues in the context of the current paradigm change in medical education. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Ultrasound-Diagnosed Nonalcoholic Fatty Liver Disease Independently Predicts a Higher Risk of Developing Diabetes Mellitus in Nonoverweight Individuals
This study was aimed to evaluate the independent value of ultrasound-diagnosed nonalcoholic fatty liver disease (us-NAFLD), as a surrogate imaging marker of the pathologic entity of NAFLD, in predicting incident diabetes mellitus (DM) in nonoverweight individuals.Materials and MethodsA total of 10,064 participants who had a body mass index
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Iodine density Changes in Hepatic and Splenic Parenchyma in Liver Cirrhosis with Dual Energy CT (DECT): A Preliminary Study
Publication date: Available online 24 September 2018Source: Academic RadiologyAuthor(s): Jian Dong, Fuliang He, Lei Wang, Zhendong Yue, Tingguo Wen, Rengui Wang, Fuquan LiuPurposeTo investigate the hemodynamic changes in liver cirrhosis by comparing iodine density in hepatic and splenic parenchyma with 8 cm detector dual energy CT (DECT).Materials and MethodsForty-six consecutive patients with liver cirrhosis and 22 healthy volunteers were recruited in this study, and they were all performed contrast enhanced examination with 8 cm detector DECT. All raw data were reconstructed with 1.25 mm slice thickness, Iodine density (...
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Prevalence and Types of Aortic Arch Variants and Anomalies in Congenital Heart Diseases
Publication date: Available online 25 September 2018Source: Academic RadiologyAuthor(s): Ahmed M. Tawfik, Donia M. Sobh, Germeen A. Ashamallah, Nihal M. BatoutyRationale and ObjectivesAortic arch (AA) variants and anomalies are important to recognize in patients with congenital heart disease (CHD) before surgery or intervention. The aim was to study the prevalence of AA anomalies and variants in patients with CHD compared to a control group. The secondary outcome was to report the associations between common variations of AA and specific types of CHD.Materials and MethodsAfter institutional review board approval, computed ...
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

More Frequent Follow-up CT Scans in Postsurgical Resection Patients Than in Postendoscopic Resection Patients of Early Gastric Cancers: Impracticality of CTs for Mucosal Cancer
ConclusionFollow-up CTs were performed more frequently in patients after surgical resection than in patients after endoscopic resection of EGCs. However, CT scans were not effective in detecting recurrent tumors after either treatment methods, especially for patients treated for mucosal gastric cancer. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Effects of Radiation Dose Reduction on Diagnostic Accuracy of Abdominal CT in Young Adults with Suspected Acute Diverticulitis: A Retrospective Intraindividual Analysis
Publication date: Available online 26 September 2018Source: Academic RadiologyAuthor(s): Sven S. Walter, Michael Maurer, Corinna Storz, Jakob Weiss, Rami Archid, Fabian Bamberg, Jong Hyo Kim, Konstantin Nikolaou, Ahmed E. OthmanRationale and ObjectivesTo assess the effects of radiation dose reduction on image quality and diagnostic accuracy of abdominal computed tomography (CT) in young adults with suspected acute diverticulitis.Materials and MethodsFifty-four patients ≤40years who received contrast-enhanced abdominal CT for suspected acute diverticulitis were included. Low-dose CT (LDCT) datasets (25%, 50%, and 75% of ...
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Correlation Between Intravoxel Incoherent Motion and Dynamic Contrast-Enhanced Magnetic Resonance Imaging Parameters in Rectal Cancer
This study aimed to determine the correlation between intravoxel incoherent motion (IVIM) and multiphase dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) quantitative parameters in patients with rectal cancer.Materials and MethodsNinety-seven patients with rectal cancer were included in this study. All pelvic MRI examinations were performed in a 3.0 T MR unit, including diffusion-weighted imaging with 16 b values, DCE-MRI with two different flip angles (5° and 10°, respectively), and T1-fast field echo sequences as the reference. The IVIM perfusion-related parameters (f, perfusion fraction; D*, pseudo...
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

A Comparison of Two Hyperpolarized 129Xe MRI Ventilation Quantification Pipelines: The Effect of Signal to Noise Ratio
ConclusionsBoth methods agree well in quantifying VDP, but agreement for LVP and MVP remains variable. We suggest a required SNR threshold be two standard deviations above the minimum value of 3.5 ± 1.5 for robust determination of VDP, suggesting a minimum SNR of 6.6. However, robust quantification of the ventilated clusters required an SNR of 13.4. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Variability in Individual Radiologist BI-RADS 3 Usage at a Large Academic Center: What's the Cause and What Should We Do About It?
This study investigates the variability of BI-RADS 3 rates among a group of academic breast imagers, with the goal of defining more precise utilization.Materials and MethodsWe retrospectively reviewed all diagnostic mammograms performed between July 1, 2013 and August 8, 2017 at our academic institution. The percentage of diagnostic mammograms given a BI-RADS 3 assessment was compared between radiologists using the Chi-square test. We then evaluated for correlation between BI-RADS 3 rate and individual clinical metrics (eg, radiologist experience, cancer detection rate [CDR] and recall rate) using univariate linear regress...
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Interobserver Agreement and Positivity of PI-RADS Version 2 Among Radiologists with Different Levels of Experience
Publication date: Available online 27 September 2018Source: Academic RadiologyAuthor(s): Thais Caldara Mussi, Fernando Ide Yamauchi, Cássia Franco Tridente, Adriano Tachibana, Victor Martins Tonso, Débora Rachello Recchimuzzi, Layra Ribeiro de Souza Leão, Daniel Calich Luz, Tatiana Martins, Ronaldo Hueb BaroniRationale and ObjectivesTo evaluate interobserver agreement of Prostate Imaging Reporting and Data System (PI-RADS) v2 category among radiologists with different levels of experience. The secondary objective was to evaluate the positivity for significant cancer among each category (splitting categ...
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Reliability of MRI-Derived Depth of Invasion of Oral Tongue Cancer
ConclusionThe MRI-derived DOI was valuable for the preoperative staging. The optimal measurement method should be selected on a case-by-case basis. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Asymptomatic Complicated Cysts in Postmenopausal Women: Is Tissue Sampling Unnecessarily High?
ConclusionThis study supports the use of a probably benign assessment of asymptomatic complicated cysts irrespective of age. The sensitivity for malignancy was 100% in our cohort. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Ultrafast Dynamic Contrast-Enhanced Breast MRI: Kinetic Curve Assessment Using Empirical Mathematical Model Validated with Histological Microvessel Density
Publication date: Available online 28 September 2018Source: Academic RadiologyAuthor(s): Naoko Mori, Hiroyuki Abe, Shunji Mugikura, Chiaki Takasawa, Satoko Sato, Minoru Miyashita, Yu Mori, Federico D. Pineda, Gregory S. Karczmar, Hajime Tamura, Shoki Takahashi, Kei TakaseRationale and ObjectivesTo evaluate whether parameters from empirical mathematical model (EMM) for ultrafast dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) correlate with histological microvessel density (MVD) in invasive breast cancer.Materials and MethodsNinety-eight consecutive patients with invasive breast cancer underwent an institut...
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Can Realistic Liver Tissue Surrogates Accurately Quantify the Impact of Reduced-kV Imaging on Attenuation and Contrast of Parenchyma and Lesions?
Publication date: Available online 28 September 2018Source: Academic RadiologyAuthor(s): Andre Euler, Justin Solomon, Paul F. FitzGerald, Ehsan Samei, Rendon C. NelsonRationale and ObjectivesTo assess if a liquid tissue surrogate for the liver (LTSL) can emulate contrast-enhanced liver parenchyma and lesions and quantify the impact of reduced-kV imaging as a function of lesion contrast, phase of enhancement, and phantom size.Materials and MethodsFirst, CT attenuation of LTSL- and water-iodine solutions were measured as a function of iodine concentration and tube potential. For each solution, the iodine concentration was de...
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Relationship Between Tube Voltage and Physical Image Quality of Pulmonary Nodules on Chest Radiographs Obtained Using the Bone-Suppression Technique
ConclusionFor a relatively dense nodule, the contrast and CNR in the bone-suppressed chest radiograph were significantly improved with lower tube voltage in the lung field overlapping with the ribs. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Adjusted Citation Rate, an Alternative Metric to Measure the Impact of General Radiology Journals
ConclusionAdjusted citation rate is an objective index for assessing journal impact that can serve as an alternative and complementary metric with which to measure the journal impact. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Robustness of Textural Features to Predict Stone Fragility Across Computed Tomography Acquisition and Reconstruction Parameters
ConclusionPrediction accuracy of stone fragility models developed from CT data is robust to expected variations in CT stone protocols used for quantification tasks. This finding facilitates their future adoption to different clinical practices. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Discrimination of Pulmonary Nodule Volume Change for Low- and High-contrast Tasks in a Phantom CT Study with Low-dose Protocols
ConclusionThe reliable discrimination of small changes in pulmonary nodule size with low-dose, thin-slice CT protocols suitable for lung cancer screening was dependent on the inter-related effects of nodule to background contrast and measurement method. (Source: Academic Radiology)
Source: Academic Radiology - October 5, 2018 Category: Radiology Source Type: research

Why Radiology Residents Experience Burnout and How to Fix It
Publication date: Available online 19 September 2018Source: Academic RadiologyAuthor(s): Dexter Mendoza, Frederic J. Bertino (Source: Academic Radiology)
Source: Academic Radiology - September 20, 2018 Category: Radiology Source Type: research

Design and Validation of a Peer-Teacher-Based Musculoskeletal Ultrasound Curriculum
Publication date: Available online 19 September 2018Source: Academic RadiologyAuthor(s): Netanel S. Berko, Jenna N. Le, Beverly A. Thornhill, Dan Wang, Abdissa Negassa, E. Stephen Amis, Mordecai KoenigsbergRationale and ObjectivesTo design and validate a peer-teacher based musculoskeletal ultrasound curriculum for radiology residents.Materials and MethodsA musculoskeletal ultrasound curriculum with hands-on scanning workshops was designed for radiology residents. Prior to the workshops, several residents received 3 hours of hands-on training in ultrasound scanning technique which was overseen by an attending musculoskeleta...
Source: Academic Radiology - September 20, 2018 Category: Radiology Source Type: research

Structural and Functional Pulmonary Magnetic Resonance Imaging in Pediatrics—From the Neonate to the Young Adult
Publication date: Available online 15 September 2018Source: Academic RadiologyAuthor(s): Laura L. Walkup, Nara S. Higano, Jason C. WoodsThe clinical imaging modalities available to investigate pediatric pulmonary conditions such as bronchopulmonary dysplasia, cystic fibrosis, and asthma are limited primarily to chest x-ray radiograph and computed tomography. As the challenges that historically limited the application of magnetic resonance imaging (MRI) to the lung have been overcome, its clinical potential has greatly expanded. In this review article, recent advances in pulmonary MRI including ultrashort echo time and hype...
Source: Academic Radiology - September 16, 2018 Category: Radiology Source Type: research

A Reliability Comparison of Cone-Beam Breast Computed Tomography and Mammography: Breast Density Assessment Referring to the Fifth Edition of the BI-RADS Atlas
ConclusionCBBCT showed equal aptitude and better agreement for the breast density evaluation compared to mammography. CBBCT could be an effective modality for breast density assessment and breast cancer risk evaluation in routine diagnosis and breast cancer screening. (Source: Academic Radiology)
Source: Academic Radiology - September 14, 2018 Category: Radiology Source Type: research

Evaluation of Simulated Lesions as Surrogates to Clinical Lesions for Thoracic CT Volumetry: The Results of an International Challenge
ConclusionHybrid datasets yielded conclusions similar to real computed tomography datasets where phantom QIBA compliant was also compliant for hybrid datasets. Some groups deemed compliant for simulated methods, not for physical lesion measurements. The magnitude of this difference was small (
Source: Academic Radiology - September 12, 2018 Category: Radiology Source Type: research

Imaging Features of the Whole Uterus Volume CT Perfusion and Influence Factors of Blood Supply: A Primary Study in Patients with Cervical Squamous Carcinoma
ConclusionThe vCTP could accurately shows the size of the CSC with use of MR as the reference standard, and its perfusion parameters have good measurement stability; the CSC was hypervascular, but this trend was less pronounced in older women. (Source: Academic Radiology)
Source: Academic Radiology - September 8, 2018 Category: Radiology Source Type: research

Two-dimensional Texture Analysis Based on CT Images to Differentiate Pancreatic Lymphoma and Pancreatic Adenocarcinoma: A Preliminary Study
ConclusionTwo-dimensional texture analysis is a quantitative method for differential diagnosis of PL from PA. The diagnostic performance of both texture analysis and CT characteristics was similar. (Source: Academic Radiology)
Source: Academic Radiology - September 6, 2018 Category: Radiology Source Type: research

BI-RADS Category 5 Assessments at Diagnostic Breast Imaging:Outcomes Analysis Based on Lesion Descriptors
This study aims to demonstrate the feasibility of classifying lesions at diagnostic breast imaging with sufficiently high PPV to merit category 5 assessments, and to identify those lesion descriptors that yield such a high PPV.Materials and MethodsFor this Health Insurance Portability and Accountability Act compliant and IRB exempt study, we reviewed diagnostic breast imaging examinations (mammography and/or ultrasound) assessed as highly suggestive of malignancy (BI-RADS category 5). Pathology diagnosis was considered the gold standard. PPV3 (biopsy performed) was calculated, and the BI-RADS descriptors for each lesion we...
Source: Academic Radiology - September 6, 2018 Category: Radiology Source Type: research

Combination of Adaptive Statistical Iterative Reconstruction-V and Lower Tube Voltage During Craniocervical Computed Tomographic Angiography Yields Better Image Quality with a Reduced Radiation Dose
Publication date: Available online 5 September 2018Source: Academic RadiologyAuthor(s): Chih-Wei Chen, Po-An Chen, Chiung-Chen Chou, Jui-Hsun Fu, Po-Chin Wang, Shuo-Hsiu Hsu, Ping-Hong LaiRationale and ObjectivesTo evaluate image quality and radiation exposure when using the adaptive statistical iterative reconstruction-V (ASIR-V) algorithm for reconstructing craniocervical computed tomographic angiography images acquired at 100 kVp.Materials and MethodsWe randomly divided 121 patients into three groups: group A (conventional protocol), 120 kVp with filtered back projection; group B, 120 kVp with 50% ASIR-V; and group C, 1...
Source: Academic Radiology - September 6, 2018 Category: Radiology Source Type: research

Convolutional Neural Networks with Template-Based Data Augmentation for Functional Lung Image Quantification
Publication date: Available online 6 September 2018Source: Academic RadiologyAuthor(s): Nicholas J. Tustison, Brian B. Avants, Zixuan Lin, Xue Feng, Nicholas Cullen, Jaime F. Mata, Lucia Flors, James C. Gee, Talissa A. Altes, John P. Mugler, III, Kun QingRationale and ObjectivesWe propose an automated segmentation pipeline based on deep learning for proton lung MRI segmentation and ventilation-based quantification which improves on our previously reported methodologies in terms of computational efficiency while demonstrating accuracy and robustness. The large data requirement for the proposed framework is made possible by ...
Source: Academic Radiology - September 6, 2018 Category: Radiology Source Type: research

Establishing a Surgical Preliminary Year in the IR Residency: Keys to Success
Publication date: Available online 6 September 2018Source: Academic RadiologyAuthor(s): Minhaj S. Khaja, William M. Sherk, Paul G. Gauger, David T. Hughes, N. Reed Dunnick, Janet E. Bailey, Wael E. SaadThe training paradigm of the interventional radiologist has quickly evolved with the approval of the integrated interventional radiology (IR) residency by the American Board of Medical Specialties and the Accreditation Council of Graduate Medical Education. Prior to appointment in an integrated IR program, a resident must complete a preliminary clinical year, which may be surgical, medical, or transitional. The unique proced...
Source: Academic Radiology - September 6, 2018 Category: Radiology Source Type: research

Modified Lung-RADS Improves Performance of Screening LDCT in a Population with High Prevalence of Non–smoking-related Lung Cancer
Publication date: October 2018Source: Academic Radiology, Volume 25, Issue 10Author(s): Hui-Ting Hsu, En-Kuei Tang, Ming-Ting Wu, Carol C. Wu, Chia-Hao Liang, Chi-Shen Chen, Guang-Yuan Mar, Ruay-Sheng Lai, Jo-Ching Wang, Chuan-Ling Wu, Yi-Luan Huang, Fu-Zong WuObjectivesWe proposed a modification of the ACR Lung Imaging Reporting and Data System (Lung-RADS) to clarify the characteristics of subsolid nodules with categories 1–11, and to compare the diagnostic accuracy with Lung-RADS and National Lung Screening Trial criteria in an Asian population with high prevalence of adenocarcinoma.MethodsWe analyzed a retrospecti...
Source: Academic Radiology - September 5, 2018 Category: Radiology Source Type: research

The Value of Supine Chest X-Ray in the Diagnosis of Pneumonia in the Basal Lung Zones
ConclusionsInterpreting only highly suspicious basal opacities as pneumonia considerably increases the PPV with almost constant NPV. Clinicians and radiologists should be aware of the limitations of SCXR regarding basal pneumonia. (Source: Academic Radiology)
Source: Academic Radiology - September 5, 2018 Category: Radiology Source Type: research

Magnetic Resonance Imaging Parameters in Predicting the Treatment Outcome of High-intensity Focused Ultrasound Ablation of Uterine Fibroids With an Immediate Nonperfused Volume Ratio of at Least 90%
ConclusionsThe findings in this study suggest that the achievement of NPV ratio of at least 90% in magnetic resonance imaging-guided HIFU treatment of uterine fibroids based on prediction model appears clinically possible without compromising the safety of patients. (Source: Academic Radiology)
Source: Academic Radiology - September 5, 2018 Category: Radiology Source Type: research

Characterization of Urinary Stone Composition by Use of Whole-body, Photon-counting Detector CT
ConclusionPCD-CT provides comparable performance to state-of-the-art EID-CT in differentiating urinary stone composition. (Source: Academic Radiology)
Source: Academic Radiology - September 5, 2018 Category: Radiology Source Type: research

Advanced Modeled Iterative Reconstruction (ADMIRE) Facilitates Radiation Dose Reduction in Abdominal CT
ConclusionAlthough ADMIRE 5 permits significantly higher noise reduction potential than ADMIRE 3, it does not facilitate higher levels of radiation dose reduction. ADMIRE nonetheless holds remarkable potential for radiation dose reduction, which features a certain dependency on the contrast of the structure of interest. Applying ADMIRE with a strength of 3 in abdominal CT may permit radiation dose reduction of about 30%. (Source: Academic Radiology)
Source: Academic Radiology - September 5, 2018 Category: Radiology Source Type: research

CT-based Radiomics Signature to Discriminate High-grade From Low-grade Colorectal Adenocarcinoma
ConclusionsWe developed and validated a radiomics signature as a complementary tool to differentiate high-grade from low-grade CRAC preoperatively, which may make contribution to personalized treatment. (Source: Academic Radiology)
Source: Academic Radiology - September 5, 2018 Category: Radiology Source Type: research

Radiation Dose Reduction at Low Tube Voltage CCTA Based on the CNR Index
Publication date: October 2018Source: Academic Radiology, Volume 25, Issue 10Author(s): Takanori Masuda, Yoshinori Funama, Takeshi Nakaura, Tomoyasu Satou, Tomokazu Okimoto, Yukari Yamashita, Naoyuki Imada, Kazuo AwaiRationale and ObjectivesWe compared the radiation dose and diagnostic accuracy on 120- and 100-kVp coronary computed tomography angiography (CCTA) scans whose contrast-to-noise ratio (CNR) was the same.Materials and MethodsWe studied 1311 coronary artery segments from 100 patients. For 120-kVp scans, the targeted image level was set at 25 Hounsfield units (HU). For 100-kVp scans, the targeted noise level was s...
Source: Academic Radiology - September 5, 2018 Category: Radiology Source Type: research