Autopsy study confirms low prevalence of adenomas in youth October 14, 2008 -- A rare autopsy study of more than 3,500 individuals found that the incidence of colorectal adenomas is low in those under 50, but rises sharply in the sixth decade of life. The study, which provides important new information about the natural history of colorectal polyps and cancer in the young, supports current guidelines recommending that screening begin at age 50.
Faster respiratory motion prediction aids radiotherapy October 10, 2008 -- Respiratory motion compensation algorithms are helping to reduce the irradiation of healthy tissues during radiotherapy by compensating for the patient's breathing during treatment. Researchers from Germany have developed new algorithms that reduce the computational burden of motion-tracking algorithms while maintaining accuracy.
Two-point US exam keeps up with whole-leg US in detecting DVT October 9, 2008 -- A serial two-point compression ultrasound study produced equivalent performance to whole-leg ultrasound in diagnosing suspected deep vein thrombosis (DVT), according to a large-scale, multicenter trial published in the October 8 issue of the Journal of the American Medical Association.
Norwegian study finds mixed success with electronic reports October 6, 2008 -- Streamlining the process of delivering radiology reports -- and making them universally accessible -- doesn't guarantee that they'll be read any faster by clinicians. In fact, quite the opposite may occur if human behavior doesn't adapt to the changes imposed by adopting healthcare informatics.
CEUS shines in complex cystic renal masses October 3, 2008 -- Contrast-enhanced ultrasound (CEUS) bested unenhanced ultrasound and CT for detecting cancer in complex cystic renal masses, according to research from Cattinara Hospital in Trieste, Italy.
Step-and-shoot mode minimizes dose in dual-source cardiac CT September 29, 2008 -- The 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.
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.