| Presentation | 2001/1/18 A Fully Automated Method for Segmentation and Thickness Determination of Hip Joint Cartilages from 3D MR Data Yoshinobu Sato, Katsuyuki Nakanishi, Hisashi Tanaka, Nobuhiko Sugano, Takashi Nishii, Hironobu Nakamura, Takahiro Ochi, Shinichi Tamura, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A fully automated method for segmentation of hip joint cartilages, including both femoral head and acetabular cartilages, and determination of their thicknesses from in vivo 3D magnetic resonance(MR) data is described. The method utilizes the constraint of the hip joint shape. That is, it assumes that both the femoral and acetabular cartilages are distributed on a spherical surface whose center corresponds to the rotational center of hip joint motion. The method consists of the following four steps. (1)Determination of the center of a sphere that approximates the femoral head using Hough transform. (2)Enhancement of cartilage regions and their inner edges(bone-attached)using directional derivatives along radial directions originating from the sphere center. (3)Segmentation of femoral head and acetabular cartilage regions using radial directional derivative images. (4)Subvoxel localization of cartilage boundaries for thickness determination. The proposed method was successfully applied to 13 sets of in vivo MR data of normal volunteers and actual patients. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 3D reconstruction / Hough transform / quantification / femoral head cartilage / acetabular cartilage |
| Paper # | MI2000-64 |
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| Committee | MI |
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| Conference Date | 2001/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Medical Imaging (MI) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Fully Automated Method for Segmentation and Thickness Determination of Hip Joint Cartilages from 3D MR Data |
| Sub Title (in English) | |
| Keyword(1) | 3D reconstruction |
| Keyword(2) | Hough transform |
| Keyword(3) | quantification |
| Keyword(4) | femoral head cartilage |
| Keyword(5) | acetabular cartilage |
| 1st Author's Name | Yoshinobu Sato |
| 1st Author's Affiliation | Division of Functional Diagnostic Imaging, Osaka University Graduate School of Medicine() |
| 2nd Author's Name | Katsuyuki Nakanishi |
| 2nd Author's Affiliation | Department of Radiology, Osaka University Graduate School of Medicine |
| 3rd Author's Name | Hisashi Tanaka |
| 3rd Author's Affiliation | Department of Radiology, Osaka University Graduate School of Medicine |
| 4th Author's Name | Nobuhiko Sugano |
| 4th Author's Affiliation | Department of Orthopedic Surgery, Osaka University Graduate School of Medicine |
| 5th Author's Name | Takashi Nishii |
| 5th Author's Affiliation | Department of Orthopedic Surgery, Osaka University Graduate School of Medicine |
| 6th Author's Name | Hironobu Nakamura |
| 6th Author's Affiliation | Department of Radiology, Osaka University Graduate School of Medicine |
| 7th Author's Name | Takahiro Ochi |
| 7th Author's Affiliation | Division of Computer Assisted Orthopedic Surgery, Osaka University Graduate School of Medicine:Department of Orthopedic Surgery, Osaka University Graduate School of Medicine |
| 8th Author's Name | Shinichi Tamura |
| 8th Author's Affiliation | Division of Functional Diagnostic Imaging, Osaka University Graduate School of Medicine |
| Date | 2001/1/18 |
| Paper # | MI2000-64 |
| Volume (vol) | vol.100 |
| Number (no) | 596 |
| Page | pp.pp.- |
| #Pages | 6 |
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