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12 May 1995 GI tract unraveling by spiral CT
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The GI tract examination with CT and MRI is currently performed by slice-based inspection despite the volumetric nature of the problem. With this paper we propose to unravel the GI tract digitally to facilitate, quantify and automate the process. To demonstrate the feasibility, an algorithm was developed to unravel and measure convoluted curvilinear structures. In the algorithm, a local K-L transform was applied along the main axis of the structure to estimate the local orientation as determined by the principal eigenvector. An adult dog bowel piece was spirally scanned in vitro and reconstructed. A digital GI tract phantom was designed and numerically synthesized. In both cases, the structures were successfully followed using our unraveling algorithm, the lengths of the structures measured with less than 5% error, and cross-sectional features of the GI tract phantom were defined, computed and plotted.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ge Wang and Michael W. Vannier M.D. "GI tract unraveling by spiral CT", Proc. SPIE 2434, Medical Imaging 1995: Image Processing, (12 May 1995);

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