Three-Dimensional Reconstruction and Quantification of Hip Joint Cartilages from Magnetic Resonances Images
Three-Dimensional Reconstruction and Quantification of Hip Joint Cartilages from Magnetic Resonances Images
复制标题
磁共振图像髋关节软骨的三维重建和量化
DOI：
--
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
S. Tamura
中科院分区：
文献类型：
--
作者：
Yoshinobu Sato;T. Kubota;K. Nakanishi;Hisashi Tanaka;N. Sugano;T. Nishii;K. Ohzono;Hironobu Nakamura;T. Ochi;S. Tamura
A method for automated determination of the distribution of hip joint cartilage thickness from in vivo magnetic resonance (MR) images is described. Three-dimensional (3-D) filtering techniques are combined with the shape constraint of the ball and socket constitution of the hip joint to accurately detect and quantitate thin structures of cartilages. The method consists of three steps: 3-D cartilage enhancement filtering, detection, and quantification. First, the cartilage and articular space regions in MR images are effectively enhanced by 3-D radial directional second-derivative filtering based on the sphere approximation of the hip joint. Next, the initial regions of the cartilages and articular space are detected from the filtered images using thresholding and connectivity analysis. The boundaries of these regions provide the initial descriptions for the subsequent refinement processes. Finally, the boundaries of cartilage regions are accurately localized and quantitated three-dimensionally through subpixel edge searching. The effect of partial voluming on the accuracy of the estimated thickness is evaluated by means of software simulation studies, and the usefulness of the method is demonstrated through experiments using in vivo MR images of a normal volunteer and actual patients.
磁共振成像软骨和软骨下骨厚度分布。
影响因子：
4.8
作者：
McGibbon,CA;Dupuy,DE;Palmer,WE;Krebs,DE
通讯作者：
Krebs,DE