Determination of position and radius of ball joints

Marjolein van der Glas; Frans M. Vos; Charl P. Botha; Albert M. Vossepoel

doi:10.1117/12.467126

9 May 2002 Determination of position and radius of ball joints

Marjolein van der Glas, Frans M. Vos, Charl P. Botha, Albert M. Vossepoel

Proceedings Volume 4684, Medical Imaging 2002: Image Processing; (2002) https://doi.org/10.1117/12.467126
Event: Medical Imaging 2002, 2002, San Diego, California, United States

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.

Citation Download Citation

Marjolein van der Glas, Frans M. Vos, Charl P. Botha, and Albert M. Vossepoel "Determination of position and radius of ball joints", Proc. SPIE 4684, Medical Imaging 2002: Image Processing, (9 May 2002); https://doi.org/10.1117/12.467126

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