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Research agreement to advance new imaging technology

thes, the heart beats, the bladder accumulates urine, and so on. Consequently, images of these areas of the body are often marked by artifacts or distortions."

Additionally, the clarity of a specific image often depends upon the composition of objects that are nearby. Natural objects, such as organs and bones, and man made objects, such as artificial hips or surgical clips, can interfere with the images of adjacent organs or tissue because they are in the way or, in the case of artificial objects such prosthetics, are far more dense than the surrounding tissue and can throw off a scanner's sensitive instrumentation. These distortions can ultimately make it more difficult to spot smaller objects, such as tumors.

"Radiologists have attempted to compensate for these problems by doing faster scans and then once they have image they filter it to decrease the artifact," said Chengazi. "But these artifacts are already 'baked' into the image by the process of reconstruction."

The T.I.E.S. technology overcomes these problems by segmenting the raw data before it is converted into an image. This allows radiologists to exclude objects that are not of interest and, thereby, heighten the resolution of the remaining target image. To draw a comparison, this approach is roughly analogous to why it is more effective to make scientific observations of the sun's corona or atmosphere during a solar eclipse when the body of the sun is obstructed.

Chengazi began to develop this method when he was a Ph.D. student at the University of London. After arriving in Rochester, Chengazi approached Umar Riaz, a computer engineer with T.I.E.S., who converted the mathematical algorithms into the software code that is the foundation of the current version of the technology.

The Image Surgery technology, which could represent a fundamentally new direction in medical tomography, has a potentially vast application in clinical care and biome
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Contact: Mark Michaud
Mark_Michaud@urmc.rochester.edu
585-273-4790
University of Rochester Medical Center
22-Mar-2007


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