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Proceedings Paper

Determination of position and radius of ball joints
Author(s): Marjolein van der Glas; Frans M. Vos; Charl P. Botha; Albert M. Vossepoel
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Paper Abstract

For successful ball-joint replacement surgery, it is important to maintain the joint's geometric center. Pre-operative detection of this center is achieved by detecting the sphere that fits onto the articular surfaces in CT or MRI images. We have developed a novel technique to automatically determine the sub-voxel position and size of a sphere in unsegmented 3D images. The method is invariant to size and robust to noise. It only needs one fourth of a sphere to detect the center. Isotropically as well as anisotropically sampled images can be used. As no segmentation is required, it can be applied directly to clinical images.

Paper Details

Date Published: 9 May 2002
PDF: 7 pages
Proc. SPIE 4684, Medical Imaging 2002: Image Processing, (9 May 2002); doi: 10.1117/12.467126
Show Author Affiliations
Marjolein van der Glas, Delft Univ. of Technology (Netherlands)
Frans M. Vos, Delft Univ. of Technology and Academic Medical Ctr. (Netherlands)
Charl P. Botha, Delft Univ. of Technology (Netherlands)
Albert M. Vossepoel, Delft Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 4684:
Medical Imaging 2002: Image Processing
Milan Sonka; J. Michael Fitzpatrick, Editor(s)

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