RADIOLOGY NEWS
B-mode US shines in measuring carotid atherosclerosis
September 19, 2008 -- B-mode ultrasound provides the highest intraobserver and interscan reproducibility for measuring carotid atherosclerosis compared with 3D ultrasound and MRI, according to recent research from the University of Western Ontario. However, 3D ultrasound and MRI did yield strong results in quantifying vessel wall volume.
Digital mammography more cost-effective than analog, report says
September 11, 2008 -- Despite recent evidence regarding the clinical utility of full-field digital mammography, many hospitals and imaging facilities find the technology's high cost a barrier to adoption. But FFDM may actually be more cost-effective than analog mammography, according to a report published in the U.K.
Wider 3D viewing angle may aid polyp detection
September 9, 2008 -- Virtual 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.
NetMeeting software aids oncologist/radiologist collaboration
September 8, 2008 -- U.K. researchers have found that off-the-shelf Internet conferencing software can help improve collaboration between radiologists and radiation oncologists in ways that sophisticated PACS software can't.
MRI can provide safe imaging for pediatric heart patients
August 29, 2008 -- Cardiovascular MRI can be performed safely, with low risk and limited hemodynamic changes, on infants with congenital heart disease, according to a study conducted at the Heart and Diabetes Center in Bad Oeynhausen, Germany.
PET dose-painting methods produce discordant results
August 27, 2008 -- As intensity-modulated radiation therapy becomes more sophisticated, oncologists are investigating new dose-painting methods to determine which areas of tumor target volume should receive additional radiation dose. But a new study indicates that two promising methods to guide dose painting actually produce sharply varied results.
Automated polyp measurement supports risk assessment
August 26, 2008 -- Automated 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.
ROI changes colorectal tumor perfusion measurements
August 26, 2008 -- The 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.
Quantitative stress echo can reliably find coronary artery disease
August 18, 2008 -- Quantitative stress echocardiography with contrast-based myocardial blood flow measurements can successfully detect coronary artery disease, according to research published online in Heart.
PET with C-11 PiB can assess beta-amyloid brain deposits
August 12, 2008 -- PET using carbon-11-labeled Pittsburgh Compound B (C-11 PiB) shows promise for assessing beta-amyloid deposits in the brain and may have a potential role as a diagnostic aid for early Alzheimer's disease, according to research published online in the Archives of Neurology.
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