The central path of the colon is an important tool in computer-assisted diagnosis: it is an aid to navigation during a virtual colonoscopy and allows an easier follow-up of the patient pathologies. However the computation of this central path remains a difficult task: on both MR and CT medical images, the wall of the colon is too thin with respect to the resolution of the acquisition and thus does not appear on images. Hence, when two sections of the colon are in contact, a loop is created in the image, and causes a wrong central path. In this paper, we propose an algorithm to remove those loops, based on the tracking of the colon skeleton in a scale-space. An evaluation of our algorithm on 20 patients showed that every loop was successfully removed, yielding a centered, anatomically and topologically correct central path.
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- Loop Removal from Colon Central Path Through Skeleton Scale-Space Tracking
- Springer Berlin Heidelberg
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