Automatic bone-free rendering of cerebral aneurysms via 3D-CTA

Punam K. Saha; John M. Abrahams; Jayaram K. Udupa

doi:10.1117/12.431004

3 July 2001 Automatic bone-free rendering of cerebral aneurysms via 3D CTA

Punam K. Saha, John M. Abrahams, Jayaram K. Udupa

Proceedings Volume 4322, Medical Imaging 2001: Image Processing; (2001) https://doi.org/10.1117/12.431004
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

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.

Citation Download Citation

Punam K. Saha, John M. Abrahams, and Jayaram K. Udupa "Automatic bone-free rendering of cerebral aneurysms via 3D CTA", Proc. SPIE 4322, Medical Imaging 2001: Image Processing, (3 July 2001); https://doi.org/10.1117/12.431004

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