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luoroscopic imagers, but with minimal image distortions unaffected by magnetic fields, extremely low instrumentation noise, variable sensitivity down to very low x-ray exposures, and more than double the spatial resolution. Andrew Kuhls (atkuhls@buffalo.edu, 716-829-3595 x114), working in Professor Stephen Rudins medical imaging physics group, says that in-vivo testing of the new device is planned, with clinical trials to follow. [Wednesday, July 25, three talks: WE-C-L 100J-3 (10:24 AM), WE-C-L 100J-4 (10:36 AM), WE-C-L 100J-6 (11 AM).]


VI. NEW 3-D IMAGING SYSTEM FOR IMAGE-GUIDED INTERVENTIONS

A new type of cone-beam computed tomography (CBCT) imaging system could enable surgeons and interventional radiologists to perform minimally invasive procedures under the guidance of 3-D images acquired during surgery with sub-millimeter spatial resolution. Medical physicists and engineers from the University Health Network in Toronto and Siemens Medical Solutions will present this technology.

Image-guided interventions have conventionally relied on image data acquired before the procedure on a diagnostic CT or magnetic resonance (MR) scanner. However, reliance on preoperative images does not allow visualization of changes imparted during a surgical procedure, such as seeing what remains of a tumor after it is removed.

This imaging promises to overcome these conventional limitations by providing image updates during the procedure. One new technology showing particular promise is CBCT implemented on a surgical C-shaped arm.

Research at the University of Toronto, headed by Jeffrey Siewerdsen (jsiewerd@uhnres.utoronto.ca), in collaboration with clinical researchers at the University Health Network and at Siemens Medical Solutions (SMS), has yielded a 3-D imaging technology that could provide physicians with sub-millimeter spatial resolution and soft tissue vis
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Contact: Ben Stein
bstein@aip.org
301-209-3091
American Institute of Physics
10-Jul-2007


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