Bio-applicable Ti-based composites with reduced image distortion under high magnetic field

Sung Chul Kim, Yu Chan Kim, Hyun Kwang Seok, Seok Jo Yang, In Jin Shon, Kang Sik Lee, Jae-chul Lee

Research output: Contribution to journalArticle

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 Ti 100-xC x composites that can reduce the artifact in the MR image under the high-strength magnetic field. Of the developed composites, Ti 70C 30 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 Ti 70C 30 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.

Original languageEnglish
Pages (from-to)401-406
Number of pages6
JournalJournal of Korean Institute of Metals and Materials
Volume50
Issue number5
DOIs
Publication statusPublished - 2012 May 1

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Magnetic Field
Composite
Magnetic resonance
Magnetic fields
Imaging systems
Composite materials
Tissue
Magnetic Resonance Imaging
Die casting inserts
Graphite
Imaging System
Magnetic susceptibility
Magnetic Susceptibility
Susceptibility
Lowest
Proportion
Synthesis
Methodology
Human

Keywords

  • Biomaterials
  • Magnetic properties
  • MR image artifact
  • Powder processing
  • SEM

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Modelling and Simulation

Cite this

Bio-applicable Ti-based composites with reduced image distortion under high magnetic field. / Kim, Sung Chul; Kim, Yu Chan; Seok, Hyun Kwang; Yang, Seok Jo; Shon, In Jin; Lee, Kang Sik; Lee, Jae-chul.

In: Journal of Korean Institute of Metals and Materials, Vol. 50, No. 5, 01.05.2012, p. 401-406.

Research output: Contribution to journalArticle

Kim, Sung Chul ; Kim, Yu Chan ; Seok, Hyun Kwang ; Yang, Seok Jo ; Shon, In Jin ; Lee, Kang Sik ; Lee, Jae-chul. / Bio-applicable Ti-based composites with reduced image distortion under high magnetic field. In: Journal of Korean Institute of Metals and Materials. 2012 ; Vol. 50, No. 5. pp. 401-406.
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