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Bio-applicable Ti-based Composites with Reduced Image Distortion Under High Magnetic Field

Authors
Kim, Sung-ChulKim, Yu-ChanSeok, Hyun-KwangYang, Seok-JoShon, In-JinLee, Kang-SikLee, Jae-Chul
Issue Date
5월-2012
Publisher
KOREAN INST METALS MATERIALS
Keywords
biomaterials; powder processing; magnetic properties; SEM; MR image artifact
Citation
KOREAN JOURNAL OF METALS AND MATERIALS, v.50, no.5, pp.401 - 406
Indexed
SCIE
SCOPUS
KCI
Journal Title
KOREAN JOURNAL OF METALS AND MATERIALS
Volume
50
Number
5
Start Page
401
End Page
406
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/108588
DOI
10.3365/KJMM.2012.50.5.401
ISSN
1738-8228
Abstract
When viewed using a magnetic resonance imaging (MRI) system, invasive materials inside the human body, in many cases, severely distort the MR image of human tissues. The degree of the MR image distortion increases in proportion not only to the difference in the susceptibility between the invasive material and the human tissue, but also to the intensity of the magnetic field induced by the MRI system. In this study, by blending paramagnetic Ti particles with diamagnetic graphite, we synthesized Ti100-xCx composites that can reduce the artifact in the MR image under the high-strength magnetic field. Of the developed composites, Ti70C30 showed the magnetic susceptibility of chi = 67.6 x 10(-6), which corresponds to 30% of those of commercially available Ti alloys, the lowest reported in the literature. The level of the MR image distortion in the vicinity of the Ti70C30 composite insert was nearly negligible even under the high magnetic field of 4.7 T. In this paper, we reported on a methodology of designing new structural materials for bio-applications, their synthesis, experimental confirmation and measurement of MR images.
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Lee, Jae chul
공과대학 (신소재공학부)
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