کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
505886 | 864544 | 2007 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Computer-aided grading and quantification of hip osteoarthritis severity employing shape descriptors of radiographic hip joint space Computer-aided grading and quantification of hip osteoarthritis severity employing shape descriptors of radiographic hip joint space](/preview/png/505886.png)
A computer-based system was designed for the grading and quantification of hip osteoarthritis (OA) severity. Employing an active-contours segmentation model, 64 hip joint space (HJS) images (18 normal, 46 osteoarthritic) were obtained from the digitized radiographs of 32 unilateral and bilateral OA-patients. Shape features, generated from the HJS-images, and a hierarchical decision tree structure was used for the grading of OA. A shape features based regression model quantified the OA-severity. The system accomplished high accuracies in characterizing hips as “Normal” (100%), of “mild/moderate”-OA (93.8%) or “severe”-OA (96.7%). OA-severity values, as expressed by HJS-narrowing, correlated highly (r=0.9,p<0.001)(r=0.9,p<0.001) with the values predicted by the regression model. The system may contribute to OA-patient management.
Journal: Computers in Biology and Medicine - Volume 37, Issue 12, December 2007, Pages 1786–1795