| Paper Abstract and Keywords |
| Presentation |
2007-01-26 16:35
A Hybrid Technique for Automatic Quantification of Hip Joint Cartilages in MR Images
M. Khanmohammadi, R. A. Zoroofi (Univ. of Tehran), Y. Sato, T. Nishii, K. Nakanishi, H. Tanaka, N. Sugano, H. Yoshikawa, H. Nakamura, S. Tamura (Osaka Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
The estimation of hip joint cartilage’s thickness is clinically important. Automatic segmentation of the hip cartilage is the first step in volume rendering of the cartilage as they can not visualize directly from original images. In this research, we propose an automatic multi step technique for segmentation the femoral head and acetabulum using clinically obtained multi-slice T1-weighted MR data. First we resample data sets with a modified Sinc interpolation technique to perform an isotropic dataset. Using anatomical knowledge of the femur, we estimate the center of the femoral head by a Hough transform. We develop a multistage approach for bone segmentation that is based on vector quantization technique and a region-growing strategy. We localize the hip joint space edges by customizing the anatomical constraint. Then, from our recent research we use localized articular space central line to segment the acetabular and femoral head cartilages from each other. After segmentation, we compare two methods for thickness measurement that are based on extremum points found from images enhanced by directional derivative filters, and the distance between the edge points along iso normal of each point. Finally we visualize the cartilages applying the maximum intensity projection as one of the volume ray casting approaches. The techniques are implemented in C++ and Matlab programming languages. The feasibility of the proposed techniques is successfully evaluated in the presence of 40 hips including 1200 MR images. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Cartilage Quantification / Directional Filter / Vector Quantization / Bone Segmentation / / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 106, no. 509, MI2006-126, pp. 161-164, Jan. 2007. |
| Paper # |
MI2006-126 |
| Date of Issue |
2007-01-19 (MI) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
MI |
| Conference Date |
2007-01-26 - 2007-01-27 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
the Cheju National Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Medical Imaging, etc. |
| Paper Information |
| Registration To |
MI |
| Conference Code |
2007-01-MI |
| Language |
English |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
A Hybrid Technique for Automatic Quantification of Hip Joint Cartilages in MR Images |
| Sub Title (in English) |
|
| Keyword(1) |
Cartilage Quantification |
| Keyword(2) |
Directional Filter |
| Keyword(3) |
Vector Quantization |
| Keyword(4) |
Bone Segmentation |
| Keyword(5) |
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| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
M. Khanmohammadi |
| 1st Author's Affiliation |
University of Tehran (Univ. of Tehran) |
| 2nd Author's Name |
R. A. Zoroofi |
| 2nd Author's Affiliation |
University of Tehran (Univ. of Tehran) |
| 3rd Author's Name |
Y. Sato |
| 3rd Author's Affiliation |
Osaka University Medical School (Osaka Univ.) |
| 4th Author's Name |
T. Nishii |
| 4th Author's Affiliation |
Osaka University Medical School (Osaka Univ.) |
| 5th Author's Name |
K. Nakanishi |
| 5th Author's Affiliation |
Osaka University Medical School (Osaka Univ.) |
| 6th Author's Name |
H. Tanaka |
| 6th Author's Affiliation |
Osaka University Medical School (Osaka Univ.) |
| 7th Author's Name |
N. Sugano |
| 7th Author's Affiliation |
Osaka University Medical School (Osaka Univ.) |
| 8th Author's Name |
H. Yoshikawa |
| 8th Author's Affiliation |
Osaka University Medical School (Osaka Univ.) |
| 9th Author's Name |
H. Nakamura |
| 9th Author's Affiliation |
Osaka University Medical School (Osaka Univ.) |
| 10th Author's Name |
S. Tamura |
| 10th Author's Affiliation |
Osaka University Medical School (Osaka Univ.) |
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| Speaker |
Author-2 |
| Date Time |
2007-01-26 16:35:00 |
| Presentation Time |
15 minutes |
| Registration for |
MI |
| Paper # |
MI2006-126 |
| Volume (vol) |
vol.106 |
| Number (no) |
no.509 |
| Page |
pp.161-164 |
| #Pages |
4 |
| Date of Issue |
2007-01-19 (MI) |