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Proceedings Paper

Automatic bone-free rendering of cerebral aneurysms via 3D-CTA
Author(s): Punam K. Saha; John M. Abrahams; Jayaram K. Udupa
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Paper Abstract

3D computed tomographic angiography (3D-CTA) has been described as an alternative to digital subtraction angiography (DSA) in the clinical evaluation of cerebrovascular diseases. A bone-free rendition of 3D-CTA facilitates a quick and accurate clinical evaluation of the disease. We propose a new bone removal process that is accomplished in three sequential steps - (1) primary delineation and removal of bones, (2) removing the effect of partial voluming around bone surfaces, and (3) removal of thin bones around nose, mouth and eyes. The bone removed image of vasculature and aneurysms is rendered via maximum intensity projection (MIP). The method has been tested on 10 patients' 3D-CTA images acquired on a general Electric Hi-Speed Spiral CT Scanner. The algorithm successfully subtracted bone showing the cerebral vasculature in all 10 patients' data. The method allows for a unique analysis of 3D-CTA data for near automatic removal of bones. This greatly reduces the need for manual removal of bones that is currently utilized and greatly facilitates the visualization of the anatomy of vascular lesions.

Paper Details

Date Published: 3 July 2001
PDF: 9 pages
Proc. SPIE 4322, Medical Imaging 2001: Image Processing, (3 July 2001); doi: 10.1117/12.431004
Show Author Affiliations
Punam K. Saha, Univ. of Pennsylvania (United States)
John M. Abrahams, Hospital of the Univ. of Pennsylvania (United States)
Jayaram K. Udupa, Univ. of Pennsylvania (United States)

Published in SPIE Proceedings Vol. 4322:
Medical Imaging 2001: Image Processing
Milan Sonka; Kenneth M. Hanson, Editor(s)

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