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Scanning innovation can improve personalized medicine
Date:11/26/2012

e major tomographic scanners into one architecture.

He explained that many of the real-world problems in cancer or heart disease are localized or often observed in a relatively small region of interest (ROI) in a human body. In order to obtain a theoretically exact reconstruction of this small area, Wang and others have shown that by using some prior knowledge and common properties on an ROI, they can precisely reconstruct the ROI from data collected with a narrow x-ray beam just covering the ROI.

"We call this novel approach `interior tomography'," Wang added. "In our latest work, we elevated interior tomography from its origin in x-ray CT to a general tomographic imaging principle, and demonstrated its validity for different tomographic modalities including single-photon emission computed tomography (SPECT), MRI, and phase-contrast tomography," Wang said.

Because interior tomographic imaging can be theoretically exact and practically informative for each of all the major imaging modalities, it becomes feasible to make each scanner "slimmer" or more compact. This compression creates the necessary room to put all of the involved tomographic modalities tightly together in space, and operates them in parallel, achieving space and time synchrony. "It is necessary to depict complicated correlative relationships among diversified physiological features," Wang further explained.

The potential clinical applications for omni-tomography may improve personalized medicine. "As an example enabled by interior tomography, an interior CT-MRI scanner can target the fast-beating heart for registration of functions and structures, delivery of drugs or stem cells, and guidance of complicated procedures such as heart valve replacement," Wang said.

Omni-tomography as a unified technology "also gives leverage to a greatly reduced radiation dose when MRI-aided interior CT reconstruction is implemented," Wang asserted. On the other hand, "it can g
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Contact: Lynn Nystrom
tansy@vt.edu
540-231-4371
Virginia Tech
Source:Eurekalert  

Page: 1 2 3

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