Eric Barnes[email protected]Clinical NewsStep-and-shoot mode minimizes dose in dual-source cardiac CTThe use of a step-and-shoot mode with dual-source CT produced radiation doses under 2 mSv for coronary CT angiography studies of patients with normal heart rates, according to a study in the October issue of Radiology.September 28, 2008Clinical NewsWider 3D viewing angle may aid polyp detectionVirtual colonoscopy readers saw a greater percentage of the colonic mucosa by increasing the field-of-view on their 3D software to match that of a standard colonoscope. However, the wider viewing angle may have also reduced polyp conspicuity and increased distortion, with unknown effects on detection sensitivity.September 8, 2008Clinical NewsAutomated polyp measurement supports risk assessmentAutomated polyp-measurement software performed as well as human readers in a study that could lead to more efficient screening with virtual colonoscopy. The study sought to evaluate the accuracy of an automated polyp size measurement tool and its effectiveness for risk stratification in 305 subjects.August 25, 2008Clinical NewsROI changes colorectal tumor perfusion measurementsThe development of automated perfusion-mapping software for CT data has opened up intriguing possibilities for the assessment of tumor vascularity, specifically for monitoring response to antiangiogenic drug treatment. But where, precisely, to measure tumor vascularity is a question that had not been addressed, according to U.K. researchers.August 25, 2008Clinical NewsImage tools cut false positives in unprepped VCAiming to optimize the results of prepless vitual colonoscopy, researchers have developed a pair of tools to process unprepped CT data and make it easier to read. According to the results of a pilot study, the methods reduced false positives by as much as one-third.August 3, 2008Clinical NewsFOBT-screened cohort yields too many positives for VCVirtual colonoscopy (VC) seems a promising way to sort through patients with a positive fecal occult blood test (FOBT), considering the latter's demonstrated low sensitivity and high false-positive rate. But in a screening cohort from the Netherlands, polyps and cancer were so common in FOBT patients that VC hardly seemed worth it.July 27, 2008Clinical NewsHigher VC laxative dose burdens patients, doesn't improve readsResearchers from the Netherlands report that higher levels of catharsis conferred neither better image quality nor improvement of tagging characteristics on image data, compared to images from subjects given lower laxative doses.July 15, 2008Clinical NewsNew algorithm sharpens coronary artery imagesResearchers at the recent Computer Assisted Radiology and Surgery (CARS) meeting in Barcelona, Spain, presented new work that aims to simplify the difficult task of evaluating coronary artery images.July 13, 2008Clinical NewsCARS report: Fuzzy theory yields sharper CTA imagesBARCELONA - Coronary CT angiography isn't as easy to perform as it could be, according to Chunliang Wang, who discussed the problem of hidden coronary arteries and introduced a novel segmentation method that might make them easier to examine at the 2008 Computer Assisted Radiology and Surgery (CARS) meeting.June 26, 2008Clinical NewsCARS report: CAD prompts range of behaviors in readersBARCELONA - How computer-aided detection (CAD) software works in theory is one thing, and how it functions in practice is another, as radiologists who use CAD have come to appreciate. But the ways in which readers react to CAD prompts, a subject that has received scant attention, has important implications for both CAD design and reader training.June 25, 2008Previous PagePage 55 of 59Next PageTop StoriesMRIMarion Smits joins Cambridge teamProf. Marion Smits speaks about her new U.K. post at Cambridge University with Prof. Ferdia Gallagher’s group and looks ahead to ECR 2026.Womens ImagingMammography screening improves survival for late-stage cancersCTUsing GPT‑4o with CT exams helps diagnose ovarian cancer earlierMRIUnclear explanations of contrast MRI exams heighten patient anxietyMRI15 years of top stories: Which are the standouts?
