Eric Barnes[email protected]CTVC not cost-effective in FOBT-positive screening populationPatients with positive screening results on fecal occult blood tests (FOBTs) should probably head straight to optical colonoscopy for their next exam, according to a new study from the Netherlands. Virtual colonoscopy may not be cost-effective in this population because so many FOBT-positive patients would need referral for polypectomy anyway, the researchers said.May 7, 2009Digital X-RayHigher skin radiation dose seen in angiography vs. coronary CTARadiation dose measured at the skin is higher and overall effective doses more variable with conventional angiography compared to coronary CT angiography (CTA), say researchers from the Medical University of South Carolina.May 3, 2009Digital X-RayBiological dose measures promise new view of cardiac imaging riskThe development of biological radiation dose measurement portends a future of far greater accuracy in gauging the damage wrought by ionizing radiation in imaging exams. Two studies, focused on cardiac CT and conventional angiography exams, respectively, offer the potential of maximizing image quality while minimizing the potential radiation risk to the patient.April 30, 2009CTVC's high positive predictive value important for colonoscopy follow-upIf virtual colonoscopy is to function effectively as a screening tool, it must not only deliver consistently high sensitivity for clinically relevant lesions, but also show a low number of false positives and a high degree of concordance with optical colonoscopy. Fortunately, VC appears to be keeping its end of the bargain, according to new research.April 29, 2009Cardiac ImagingAuntMinnie.com Cardiac Imaging InsiderApril 26, 2009CTVC finds serious extracolonic lesions in older patientsExtracolonic abnormalities occur more frequently among older and symptomatic patients, and are more cost-effective to detect in these populations, according to researchers from Korea. Their multicenter study examined a large screening cohort with virtual colonoscopy using a variety of exam techniques.April 21, 2009Advanced VisualizationVC CAD plus 3D improves sensitivity for novice readersComputer-aided detection (CAD) with 3D viewing improves sensitivity for polyp detection among less experienced readers, and may also speed up reading times and reduce false-positive detections. On the other hand, the performance of experienced readers did not improve significantly with CAD use, researchers from the University of Rome concluded.April 20, 2009Image-Guided SurgeryLung tumor ablation improved with microwave versus RF techniqueMicrowave ablation of lung tumors outperforms the more established radiofrequency (RF) ablation technique, according to a new study published in Radiology from the University of Wisconsin. Analysis of gross pathology and CT images found that microwave ablation created larger, more uniform circular zones around ablated regions of normal porcine lungs.April 16, 2009CTTube current modulation cuts triple rule-out CTA doseTube current modulation can substantially reduce the radiation dose of so-called triple rule-out scans, an increasingly popular test for patients presenting with chest pain and suspected acute coronary syndromes (ACS), according to researchers from Thomas Jefferson University in Philadelphia.April 14, 2009CTVC CAD plus electronic cleaning boosts sensitivity, false positivesComputer-aided detection (CAD) of colorectal polyps combined with electronic cleansing of tagged data is a promising but technically daunting approach to finding more polyps in virtual colonoscopy. In a new Korean study, electronic cleansing slightly increased the sensitivity of CAD but more than doubled the number of false-positive detections.April 9, 2009Previous PagePage 147 of 258Next PageTop StoriesDigital X-RayChest x-rays reveal atherosclerosis in patients undergoing amputationsLower limb amputation is an increasingly common major complication of advanced peripheral arterial disease and diabetes mellitus.MRI3D MRI technique helps plan treatment for pediatric heart conditionsWomens ImagingCould AI scoring help with managing DCIS?CTClinicians, beware: CT diagnostic accuracy varies by adnexal lesion typePractice ManagementRadiology coding update for 2026
