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Heang-Ping Chan, Mark A Helvie
See also the article by Lehman et al in this issue.
October 16, 2018: Radiology
Annett Lebenatus, Mona Salehi Ravesh
No abstract text is available yet for this article.
October 16, 2018: Radiology
Marcell Gyánó, István Góg, Viktor I Óriás, Zoltán Ruzsa, Balázs Nemes, Csaba Csobay-Novák, Zoltán Oláh, Zsuzsa Nagy, Béla Merkely, Krisztián Szigeti, Szabolcs Osváth, Péter Sótonyi
Purpose To compare the image quality produced by kinetic imaging in x-ray angiography and the current reference standard digital subtraction angiography (DSA). Materials and Methods This prospective observational crossover study enrolled 42 patients undergoing lower limb x-ray angiography between February and June 2017 (mean age, 68.7 years; age range, 49-89 years; 32 men [mean age, 67.1 years; age range, 49-89 years] and 10 women [mean age, 75 years; age range, 57-85 years]). Signal-to-noise ratios (SNRs) of DSA and kinetic image pairs were compared...
October 16, 2018: Radiology
Gu-Wei Ji, Yu-Dong Zhang, Hui Zhang, Fei-Peng Zhu, Ke Wang, Yong-Xiang Xia, Yao-Dong Zhang, Wang-Jie Jiang, Xiang-Cheng Li, Xue-Hao Wang
Purpose To evaluate a radiomics model for predicting lymph node (LN) metastasis in biliary tract cancers (BTCs) and to determine its prognostic value for disease-specific and recurrence-free survival. Materials and Methods For this retrospective study, a radiomics model was developed on the basis of a primary cohort of 177 patients with BTC who underwent resection and LN dissection between June 2010 and December 2016. Radiomic features were extracted from portal venous CT scans. A radiomics signature was built on the basis of reproducible features by using the least absolute shrinkage and selection operator method...
October 16, 2018: Radiology
Constance D Lehman, Adam Yala, Tal Schuster, Brian Dontchos, Manisha Bahl, Kyle Swanson, Regina Barzilay
Purpose To develop a deep learning (DL) algorithm to assess mammographic breast density. Materials and Methods In this retrospective study, a deep convolutional neural network was trained to assess Breast Imaging Reporting and Data System (BI-RADS) breast density based on the original interpretation by an experienced radiologist of 41 479 digital screening mammograms obtained in 27 684 women from January 2009 to May 2011. The resulting algorithm was tested on a held-out test set of 8677 mammograms in 5741 women...
October 16, 2018: Radiology
Temel Tirkes, Zarine K Shah, Naoki Takahashi, Joseph R Grajo, Stephanie T Chang, Sudhakar K Venkatesh, Darwin L Conwell, Evan L Fogel, Walter Park, Mark Topazian, Dhiraj Yadav, Anil K Dasyam
Chronic pancreatitis is an inflammatory condition of the pancreas with clinical manifestations ranging from abdominal pain, acute pancreatitis, exocrine and/or endocrine dysfunction, and pancreatic cancer. There is a need for longitudinal studies in well-phenotyped patients to ascertain the utility of cross-sectional imaging findings of chronic pancreatitis for diagnosis and assessment of disease severity. CT and MR cholangiopancreatography are the most common cross-sectional imaging studies performed for the evaluation of chronic pancreatitis...
October 16, 2018: Radiology
Alec J Megibow
See also the article by Tirkes et al in this issue.
October 16, 2018: Radiology
Andrea Laghi, Cecilia Voena
See also the article by Ji et al in this issue.
October 16, 2018: Radiology
Utaroh Motosugi, Alejandro Roldán-Alzate, Peter Bannas, Adnan Said, Sean Kelly, Ryan Zea, Oliver Wieben, Scott B Reeder
Purpose To assess the feasibility of four-dimensional (4D) flow MRI as a noninvasive imaging marker for stratifying the risk of variceal bleeding in patients with liver cirrhosis. Materials and Methods This study recruited participants scheduled for both liver MRI and gastroesophageal endoscopy. Risk of variceal bleeding was assessed at endoscopy by using a three-point scale: no varices, low risk, and high risk requiring treatment. Four-dimensional flow MRI was used to create angiograms for evaluating visibility of varices and to measure flow volumes in main portal vein (PV), superior mesenteric vein, splenic vein (SV), and azygos vein...
October 16, 2018: Radiology
Amit Tirosh, Neige Journy, Les R Folio, Choonsik Lee, Christiane Leite, Jianhua Yao, William Kovacs, W Marston Linehan, Ashkan Malayeri, Electron Kebebew, Amy Berrington de González
Purpose To assess the potential ionizing radiation exposure from CT scans for both screening and surveillance of patients with von Hippel-Lindau (VHL) syndrome. Materials and Methods For this retrospective study, abdomen-pelvic (AP) and chest-abdomen-pelvic (CAP) CT scans were performed with either a three-phase (n = 1242) or a dual-energy virtual noncontrast protocol (VNC; n = 149) in 747 patients with VHL syndrome in the National Institutes of Health Clinical Center between 2009 and 2015 (mean age, 47.6 years ± 14...
October 9, 2018: Radiology
William P Dillon
No abstract text is available yet for this article.
October 9, 2018: Radiology
Patrick M Colletti
No abstract text is available yet for this article.
October 9, 2018: Radiology
Yiyi Zhang, Eliseo Guallar, Saurabh Malhotra, Brad C Astor, Joseph F Polak, Ye Qiao, Antoinette S Gomes, David M Herrington, A Richey Sharrett, David A Bluemke, Bruce A Wasserman
Purpose To compare common carotid artery (CCA) wall thickness measured manually by using US and semiautomatically by using MRI, and to examine their associations with incident coronary heart disease and stroke. Materials and Methods This prospective study enrolled 698 participants without a history of clinical cardiovascular disease (CVD) from the Multi-Ethnic Study of Atherosclerosis (MESA) from July 2000 to December 2013 (mean age, 63 years; range, 45 to 84 years; same for men and women). All participants provided written informed consent...
October 9, 2018: Radiology
Mohamed H Khalaf, Vandana Sundaram, Mohammed Ahmed AbdelRazek Mohammed, Rajesh Shah, Ankaj Khosla, Katherine Jackson, Manisha Desai, Nishita Kothary
Purpose To develop and validate a predictive model for postembolization syndrome (PES) following transarterial hepatic chemoembolization (TACE) for hepatocellular carcinoma. Materials and Methods In this single-center, retrospective study, 370 patients underwent 513 TACE procedures between October 2014 and September 2016. Seventy percent of the patients were randomly assigned to a training data set and the remaining 30% were assigned to a testing data set. Variables included demographic, laboratory, clinical, and procedural details...
October 9, 2018: Radiology
Jeff W M Bulte, Heike E Daldrup-Link
Cell therapy has provided unprecedented opportunities for tissue repair and cancer therapy. Imaging tools for in vivo tracking of therapeutic cells have entered the clinic to evaluate therapeutic cell delivery and retention in patients. Thus far, clinical cell tracking studies have been a mere proof of principle of the feasibility of cell detection. This review centers around the main clinical queries associated with cell therapy: Have cells been delivered correctly at the targeted site of injection? Are cells still alive, and, if so, how many? Are cells being rejected by the host, and, if so, how severe is the immune response? For stem cell therapeutics, have cells differentiated into downstream cell lineages? Is there cell proliferation including tumor formation? At present, clinical cell tracking trials have only provided information on immediate cell delivery and short-term cell retention...
October 9, 2018: Radiology
Qian Tao, Wenjun Yan, Yuanyuan Wang, Elisabeth H M Paiman, Denis P Shamonin, Pankaj Garg, Sven Plein, Lu Huang, Liming Xia, Marek Sramko, Jarsolav Tintera, Albert de Roos, Hildo J Lamb, Rob J van der Geest
Purpose To develop a deep learning-based method for fully automated quantification of left ventricular (LV) function from short-axis cine MR images and to evaluate its performance in a multivendor and multicenter setting. Materials and Methods This retrospective study included cine MRI data sets obtained from three major MRI vendors in four medical centers from 2008 to 2016. Three convolutional neural networks (CNNs) with the U-NET architecture were trained on data sets of increasing variability: (a) a single-vendor, single-center, homogeneous cohort of 100 patients (CNN1); (b) a single-vendor, multicenter, heterogeneous cohort of 200 patients (CNN2); and (c) a multivendor, multicenter, heterogeneous cohort of 400 patients (CNN3)...
October 9, 2018: Radiology
Min Sun Bae, Woo Kyung Moon
No abstract text is available yet for this article.
October 2, 2018: Radiology
Tomomi Nobashi, Erik Mittra
No abstract text is available yet for this article.
October 2, 2018: Radiology
Yi-Chen Lai, Kimberly M Ray, Amie Y Lee, Jessica H Hayward, Rita I Freimanis, Iryna V Lobach, Bonnie N Joe
Purpose To compare the performance of two-dimensional synthetic mammography (SM) plus digital breast tomosynthesis (DBT) versus conventional full-field digital mammography (FFDM) in the detection of microcalcifications on screening mammograms. Materials and Methods In this retrospective multireader observer study, 72 consecutive screening mammograms recalled for microcalcifications from June 2015 through August 2016 were evaluated with both FFDM and DBT. The data set included 54 mammograms with benign microcalcifications and 18 mammograms with malignant microcalcifications, and 20 additional screening mammograms without microcalcifications used as controls...
October 2, 2018: Radiology
Rajan Jain, Yvonne W Lui
No abstract text is available yet for this article.
October 2, 2018: Radiology
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