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

Title
Bio-applicable Ti-based Composites with Reduced Image Distortion Under High Magnetic Field
Authors
김성철김유찬석현광양석조손인진이재철이강식
Keywords
biomaterials; powder processing; magnetic properties; SEM; MR image artifact
Issue Date
2012-05
Publisher
대한금속 . 재료학회지; Journal of the Korean Institute of Metals and Materials
Citation
VOL 50, NO 5, 401-406
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 χ = 67.6 × 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.
URI
http://pubs.kist.re.kr/handle/201004/42592
ISSN
17388228
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KIST Publication > Article
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