| Presentation | 1998/3/20 Magnetic resonance imaging-based measurement of 6-degree-of-freedom relative movement between the femur and tibia Koko MIZUSAWA, Toyohiko HAYASHI, Go Omori, Ken-Ichi ITOH, Teruyuki SAITOH, Yoshio Koga, Michio Miyakawa, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Relative movement between the femur and tibia themselves has yet to be measured clinically, primarily due to the limitation of measurement methodology. To achieve such measurement, we developed a totally new method capable of measuring 6-DOF movement of the tibia relative to the femur, using an open MR system. Knee movement was sampled at several flexion angles including extension, by obtaining sagittal MR images of the entire knee joint. At each flexion angle, relative position and orientation of the femur and tibia was computed in a manner as follows: 1)reconstruction of 3-D joint contour from all MR-images; 2)registration of the bone contours to corresponding ones obtained in extension; 3) computation of the motion parameters. In order to reduce MR-imaging time, we experimentally obtained the relationship between the number of sagittal sections of the knee and the deviation of motion-parameter values. Additionally, we actually measured knee movement of a subject during flexion in an attempt to certify the validity and clinical applicability of our methodology. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | knee movement / 6-degree-of-freedom motion measurement / magnetic resonance imaging / three-dimensional registration / femur / tibia |
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| Committee | MBE |
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| Conference Date | 1998/3/20(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Magnetic resonance imaging-based measurement of 6-degree-of-freedom relative movement between the femur and tibia |
| Sub Title (in English) | |
| Keyword(1) | knee movement |
| Keyword(2) | 6-degree-of-freedom motion measurement |
| Keyword(3) | magnetic resonance imaging |
| Keyword(4) | three-dimensional registration |
| Keyword(5) | femur |
| Keyword(6) | tibia |
| 1st Author's Name | Koko MIZUSAWA |
| 1st Author's Affiliation | Graduate School of Science and Technology, Niigata University() |
| 2nd Author's Name | Toyohiko HAYASHI |
| 2nd Author's Affiliation | Graduate School of Science and Technology, Niigata University |
| 3rd Author's Name | Go Omori |
| 3rd Author's Affiliation | Orthopedic Surgery, Niigata University, School of Medicine |
| 4th Author's Name | Ken-Ichi ITOH |
| 4th Author's Affiliation | Faculty of Engineering, Niigata Institute of Technology |
| 5th Author's Name | Teruyuki SAITOH |
| 5th Author's Affiliation | Tominaga Kusano Hospital |
| 6th Author's Name | Yoshio Koga |
| 6th Author's Affiliation | Orthopedic Surgery, Niigata Kobari Hospital |
| 7th Author's Name | Michio Miyakawa |
| 7th Author's Affiliation | Faculty of Engineering, Niigata University |
| Date | 1998/3/20 |
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| Volume (vol) | vol.97 |
| Number (no) | 622 |
| Page | pp.pp.- |
| #Pages | 8 |
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