Determination of position and radius of ball joints

Autor:	Albert M. Vossepoel, Charl P. Botha, Marjolein van der Glas, Frans M. Vos
Rok vydání:	2002
Předmět:	Novel technique Articular surfaces Computer science business.industry Physics::Medical Physics Ball joint Hough transform law.invention Mri image law Computer vision Segmentation Artificial intelligence Invariant (mathematics) business
Zdroj:	Medical Imaging: Image Processing
ISSN:	0277-786X
DOI:	10.1117/12.467126
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1f22c163966e958d8f5f7ec7546d7a72 https://doi.org/10.1117/12.467126 Zobrazit plný text záznamu