Eric Barnes[email protected]Clinical NewsRadiographers perform VC with CAD -- and controversyA new study from London put radiographers in charge of reading virtual colonoscopy (VC) data, with their performance monitored with computer-aided detection as a second reader. The study raises the question of whether it's inappropriate -- or even dangerous -- to allow nonradiologists to screen with VC.June 23, 2008Clinical NewsVC radiation dose holds steady overall despite dose modulationThe radiation dose from virtual colonoscopy (VC) hasn't dropped much since the introduction of dose modulation software on CT scanners, largely because VC providers use it only half the time, according to a new study from the Netherlands, which also demonstrated significantly lower doses for VC screening protocols compared to daily practice protocols.June 1, 2008Clinical NewsAutomated polyp measurement cuts variabilityA new study from the Netherlands found that manual polyp measurements in virtual colonoscopy were a bit more accurate than an automated process based on polyp protrusion measurements. The automated scheme still came out ahead, however, because it eliminated interobserver variability.May 20, 2008Clinical NewsGround-glass nodule features on CT reveal malignancy riskResearchers are peering through a proverbial glass, darkly, to study the features of ground-glass opacities (GGOs). GGOs are being detected with increasing frequency as more thin-section CT lung scans are performed to check for cancer in smokers and former smokers. Distinguishing benign from malignant GGOs is a hit-or-miss task for CT, one that could potentially improve if researchers are able to find reliable signs of malignancy or benignity, thereby reducing the need for invasive biopsy.April 28, 2008ConferenceObese patients challenge efficacy of cardiac CTAVIENNA - Coronary CT angiography (CTA) is proving useful for evaluating most patients with suspected coronary artery disease, particularly since the introduction of 64-slice scanners. But information about CTA's performance in certain subpopulations, such as obese patients, is lacking. Researchers from Belgium studied whether coronary CTA was useful in this patient population, and presented their findings at the 2008 European Congress of Radiology (ECR).March 10, 2008ConferenceCT maintains edge over MRI in liver transplant planningVIENNA - Researchers from Germany have found that CT still does a better job than MRI of defining critical vasculature for living donor liver transplant planning, thereby enhancing overall safety for the donors. They compared the results of preoperative CT and MR cholangiography in potential liver donors, and presented their findings Monday at the 2008 European Congress of Radiology (ECR).March 9, 2008ConferenceCAD nabs the flat polyps VC readers may missVIENNA - In two studies presented Sunday at the 2008 European Congress of Radiology, investigators tested colon computer-aided detection (CAD) schemes for their ability to find flat lesions. In both, the sensitivity was reassuringly high, though questions remain about the effect of false-positive CAD detections on reader performance and variations in flat polyp morphology.March 8, 2008ConferenceDose studies delve into coronary CTAVIENNA - At the 2008 European Congress of Radiology (ECR) on Saturday, researchers presented a pair of studies that examined the radiation dose of coronary CT angiography (CTA). The first compared the dose of 64-slice CT to that of dual-source CT, and the other examined coronary CTA dose data from a multicenter trial.March 7, 2008ConferenceAutomated patient-based contrast application cuts CTA contrast volume, riskVIENNA - A work-in-progress application that bases coronary CT angiography (CTA) contrast dose and timing on a patient's individual cardiac output significantly reduces contrast media use and, by extension, the risk of nephropathy, according to a study presented Friday at the 2008 European Congress of Radiology (ECR).March 6, 2008ConferenceDual-source CT edges into cardiac SPECT turfU.S. researchers will use this week's European Congress of Radiology in Vienna to present research that shows dual-source CT making inroads into cardiac functional imaging, an area currently dominated by SPECT. The study moves dual-source coronary CT angiography closer to the holy grail of cardiac imaging -- a test that performs both morphological and functional analysis in a single scan.March 5, 2008Previous PagePage 56 of 59Next PageTop StoriesWomens ImagingHybrid AI reading shows success in breast cancer screeningA Dutch team found that a hybrid reading strategy for screening mammography reduced radiologist workload by 38% without changing recall or cancer detection rates.Medical, Legal, and PracticeCooking robot gets rave reviews in TübingenMRIUltrasound plus MRI helps diagnose pain from rotator cuff tendinopathyMedical, Legal, and PracticePressure grows for more rigorous financial disclosureMRIMRI, CT findings correlate for assessing epicardial fat volume
