Health Imaging & IT - March 2008 - (Page 12)

NEWS UPDATE Clinical Studies Breast CAD enhances single-reader results A comprehensive study of 231,221 screening mammograms indicates that computer-assisted detection (CAD) technology enhances Researchers at Emory University Breast Clinic in Atlanta have performance of a single reader, yielding increased sensitivity with reported using 3D technology to help detect more breast cancers only a small increase in recall rate. with fewer false positives. The study, to be published in the April 2008 edition of Lead researcher David J. Getty, PhD, discussed interim the American Journal of Roentgenology, was conducted results of an ongoing clinical trial on new stereoscopic by Matthew Gromet, MD, of the breast imaging secdigital mammography system at RSNA 2007. tion of Charlotte Radiology, in Charlotte, N.C. Getty is a division scientist at BBN Technologies Gromet’s work compared the recall rate, sensitiviin Cambridge, Mass. BBN Technologies and Planar ty, positive predictive value, and cancer detection rate Systems have developed a stereoscopic system to help for single reading with CAD, versus double reading radiologists see the internal structure of the breast. without CAD. He found that a single reader with CAD Stereoscopic digital mammography acquires two had a statistically significant increase in sensitivity (11 digital radiographs of the breast, separated by about 8 [ Source: Hologic ] percent) and a smaller increase in recall rate (4 percent), degrees, according to RSNA News. The mammographer’s when compared with a single reader without CAD assistance. visual system can then fuse the images at the workstation to Single reading with CAD review, when compared with independent view the breast in 3D. double reading, resulted in a not statistically significant increase in In the study presented by Getty, researchers used a full-field digital sensitivity but with a statistically 2/4/08 10:19 AM Page 1 XRAYPRINT 3375:Layout 1 significant lower recall rate. mammography unit slightly customized to acquire images in pairs.  New stereoscopic system may reduce false positives in mammography CMR is superior to SPECT for CAD detection Perfusion-cardiac MR (CMR) is a valuable alternative to SPECT for coronary artery disease (CAD) detection showing equal performance in the head-to-head comparison, according to a MR-IMPACT trial published in the February issue of the European Heart Journal. Of the 241 patients enrolled during 12 months, 225 patients were available for the perfusion-CMR vs. SPECT comparison. MR-IMPACT is the largest multi-center perfusion-CMR study performed so far, and it also evaluates its test performance in a multi-vendor design, which is expected to reflect true diagnostic performance of widely applied perfusion-CMR. Overall, the researchers found that comparing perfusion-CMR with the entire SPECT population suggests CMR superiority over SPECT, which warrants further evaluation in larger trials. FILMLESS DOESN’T MEAN PAPERLESS SAVE 90% OFF YOUR MEDICAL IMAGING HARD COPY COSTS* aycan xray-print solution TM ›› Print DICOM images ›› ›› ›› ›› on plain paper for less than 10 cents. Drastically reduce film costs. Improve communication with referral physicians and patients. Eliminate expensive film jackets and transportation costs. File and annotate more easily than film. * varies by printer model  Many patients should take N-acetylcysteine before CT N-acetylcysteine is more renoprotective than hydration alone, and theophylline may reduce the risk for contrastinduced nephropathy, according to a new meta-analysis in the Feb. 18 issue of the Annals of Internal Medicine. Aine M. Kelly, MD, of the University of Michigan and Veteran Affairs Ann Arbor Healthcare System in Ann Arbor, Mich., and colleagues set out to determine the effect of the agents on preventing nephropathy. Kelly and colleagues found that theophylline may also reduce risk for contrast-induced nephropathy, although the detected association was not significant. They concluded that their data support the administration of N-acetylcysteine prophylaxis, particularly in high-risk patients, given its low cost, availability and few side effects. HealthImaging.com www.aycanus.com info@aycanus.com 12 Health Imaging & IT | March 2008 http://www.aycanus.com http://www.aycanus.com http://HealthImaging.com

Table of Contents Feed for the Digital Edition of Health Imaging & IT - March 2008

Health Imaging & IT - March 2008 Table of Contents On the Web The Enterprise: Communicating Better News Update Critical Test Results Management: The Human Touch The Changing Face of the Cath Lab Cardiovascular CT: A Clinical Boon Cardiology PACS: Solutions to Fit Your Needs ACC 08: Building Quality & Value Together Picking the Perfect PACS Displays PET/CT: A Game-Changer in Cancer Patient Management DR: You Gotta Have IT – Delivering Speed, Efficiency, Savings Laser Imagers: Answering the Call for Hard Copy Reader's Resources Stat Sheet

Health Imaging & IT - March 2008

For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.