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Hokkaido University Collection of Scholarly and Academic Papers >
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Reduction of artifact of metallic implant in magnetic resonance imaging by combining paramagnetic and diamagnetic materials
| Title: | Reduction of artifact of metallic implant in magnetic resonance imaging by combining paramagnetic and diamagnetic materials |
| Authors: | Gao, Yanhui Browse this author | | Muramatsu, Kazuhiro Browse this author | | Kushibe, Atsumichi Browse this author | | Yamazaki, Keita Browse this author | | Chiba, Akihiko Browse this author | | Yamamoto, Toru Browse this author →KAKEN DB |
| Keywords: | biomedical materials | | biomedical MRI | | bismuth | | chromium alloys | | coatings | | cobalt alloys | | diamagnetic materials | | finite element analysis | | graphite | | molybdenum alloys | | paramagnetic materials | | prosthetics | | titanium |
| Issue Date: | 1-May-2010 |
| Publisher: | American Institute of Physics |
| Journal Title: | Journal of Applied Physics |
| Volume: | 107 |
| Issue: | 9 |
| Start Page: | 09B323 |
| Publisher DOI: | 10.1063/1.3352582 |
| Abstract: | The method of coating the metallic implant made of paramagnetic materials with diamagnetic materials has been proposed to reduce the magnetic disturbance of metallic implants which causes artifact in magnetic resonance imaging. The optimal thicknesses of the diamagnetic coatings have been obtained for a straight cylindrical hip joint and an aneurysm clip by using the magnetic field analysis of the finite element method (FEM). Whereas in the manufacturing, with respect to the mechanical force of the diamagnetic material, etc., the new structure of dual-material model with diamagnetic material inside and paramagnetic material outside is considered better. In this paper, first the effectiveness of the structure of the dual-material model with actual diamagnetic material inside and paramagnetic material outside is investigated by using the FEM. Then optimal thicknesses of paramagnetic coating of two models are obtained. Finally the effectiveness of the dual-material model is verified by the experiment. |
| Rights: | Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Appl. Phys. 107, 09B323 (2010) and may be found at https://dx.doi.org/10.1063/1.3352582 |
| Type: | article |
| URI: | http://hdl.handle.net/2115/49332 |
| Appears in Collections: | 保健科学院・保健科学研究院 (Graduate School of Health Sciences / Faculty of Health Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山本 徹
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