講演名 | 2008-01-26 Automated Segmentation of the Hip Bones and Cartilages in Multi-Slice CT Images , |
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抄録(和) | |
抄録(英) | In the hip joint degenerative diseases, quantification and visualization of the hip bone cartilages is of particular clinical interest. In this research, the datasets are acquired by injecting the contrast media in the hip joint during data acquisition under continuous leg traction. We present two independent methods for segmentation of the hip bones and cartilages. We first enhance the dynamic range and contrast of the data set by a conventional procedure. We then estimate the center of the femoral head utilizing a Hough transform. The estimated center is used as a pivotal point for beginning the segmentation process. Next, for cartilages segmentation, based on anatomical knowledge about the femoral head shape and size, we derive a region of interest (ROI) for further operations. In this case, by employing an Image Bottom Hat technique and anatomical knowledge about the curved shaped of the cartilages, we extract the valleys between contrast media and hip bones. For segmentation of bones, ROI are selected based on bones intensity. Then we utilize radial difference from femoral head center and Image Bottom Hat techniques for extracting bones edge in sagital view. The proposed model is validated on twenty sets (5120 images) of actual in vivo hip CT data. |
キーワード(和) | |
キーワード(英) | Cartilage segmentation / Thickness map estimation / Hough transform / Knowledge based Segmentation |
資料番号 | MI2007-149 |
発行日 |
研究会情報 | |
研究会 | MI |
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開催期間 | 2008/1/18(から1日開催) |
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講演論文情報詳細 | |
申込み研究会 | Medical Imaging (MI) |
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本文の言語 | ENG |
タイトル(和) | |
サブタイトル(和) | |
タイトル(英) | Automated Segmentation of the Hip Bones and Cartilages in Multi-Slice CT Images |
サブタイトル(和) | |
キーワード(1)(和/英) | / Cartilage segmentation |
第 1 著者 氏名(和/英) | / Ayoub BANIASADIPOUR |
第 1 著者 所属(和/英) | Electrical and Computer Engineering Department, University of Tehran |
発表年月日 | 2008-01-26 |
資料番号 | MI2007-149 |
巻番号(vol) | vol.107 |
号番号(no) | 461 |
ページ範囲 | pp.- |
ページ数 | 8 |
発行日 |