Reduction of artifact of metallic implant in magnetic resonance imaging by combining paramagnetic and diamagnetic materials

Gao, Yanhui; Muramatsu, Kazuhiro; Kushibe, Atsumichi et al.

Journal of Applied Physics, 2010, 107(9), 09B323

Permalink : https://hdl.handle.net/2115/49332

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アクセス権
open access
URI
https://hdl.handle.net/2115/49332
タイトル
Reduction of artifact of metallic implant in magnetic resonance imaging by combining paramagnetic and diamagnetic materials
著者
Gao, Yanhui ; Muramatsu, Kazuhiro ; Kushibe, Atsumichi ; Yamazaki, Keita ; Chiba, Akihiko ; Yamamoto, Toru
著者名
Gao, Yanhui
著者名
Muramatsu, Kazuhiro
著者名
Kushibe, Atsumichi
著者名
Yamazaki, Keita
著者名
Chiba, Akihiko
e-Rad_Researcher
80261361
著者名
Yamamoto, Toru
言語
英語
キーワード
biomedical materials
biomedical MRI
bismuth
chromium alloys
coatings
cobalt alloys
diamagnetic materials
finite element analysis
graphite
molybdenum alloys
paramagnetic materials
prosthetics
titanium
発行日
2010-05-01
出版者
American Institute of Physics
収録物名
Journal of Applied Physics
巻(号)
107(9)
ページ
09B323
抄録
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.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
権利情報
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
PISSN
0021-8979
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1063/1.3352582