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| 講演名 | 2008-01-25 15:50 Automated Visualization of Femoral and Acetabular Cartilages In MR Images of the Hip Mahdieh Khanmohammadi・○Reza A. Zoroofi（Univ. of Tehran）・Yoshinobu Sato・Takashi Nishii・Hisashi Tanaka（Osaka Univ.）  MI2007-102 |
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| 抄録 | （和） | Visualization of the hip cartilages is clinically useful for clinicians and orthopedic surgeons. In this research, we propose a multi step technique for segmentation and thickness-map visualization of the femoral and acetabular cartilages based on clinically obtained multi-slice T1-weighted MR data. We first propose a technique for bone segmentation based on vector quantization technique and femoral head center estimation Next, we localize the hip joint space center-line by employing anatomical constraint and a customized double thresholding technique. We then segment the hip joint cartilages roughly using a Top-hat filter on first derivative images. We next utilize the articular-space center-line to segment the acetabular and femoral head cartilages. We finally apply a method for thickness measurement based on extermum points found from images enhanced by directional derivative filters. The feasibility of the proposed techniques is evaluated in the presence of 40 hips including 2400 MR images. |
| （英） | Visualization of the hip cartilages is clinically useful for clinicians and orthopedic surgeons. In this research, we propose a multi step technique for segmentation and thickness-map visualization of the femoral and acetabular cartilages based on clinically obtained multi-slice T1-weighted MR data. We first propose a technique for bone segmentation based on vector quantization technique and femoral head center estimation Next, we localize the hip joint space center-line by employing anatomical constraint and a customized double thresholding technique. We then segment the hip joint cartilages roughly using a Top-hat filter on first derivative images. We next utilize the articular-space center-line to segment the acetabular and femoral head cartilages. We finally apply a method for thickness measurement based on extermum points found from images enhanced by directional derivative filters. The feasibility of the proposed techniques is evaluated in the presence of 40 hips including 2400 MR images. | |
| キーワード | （和） | Bone Segmentation / Singular Value Decomposition / Hough Transform / Directional Derivative Filters / Cartilage Segmentation / / / |
| （英） | Bone Segmentation / Singular Value Decomposition / Hough Transform / Directional Derivative Filters / Cartilage Segmentation / / / | |
| 文献情報 | 信学技報, vol. 107, no. 461, MI2007-102, pp. 207-210, 2008年1月. | |
| 資料番号 | MI2007-102 | |
| 発行日 | 2008-01-18 (MI) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| 著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します．(許諾番号：10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| PDFダウンロード | MI2007-102 |
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