A micro planar coil for local high resolution magnetic resonance imaging

Hidetoshi Takahashi, Tetsuji Dohi, Kiyoshi Matsumoto, Isao Shimoyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Citations (Scopus)

Abstract

This paper reports on a flexible micro planar coil for an MR (Magnetic Resonance) catheter. High resolution images can be obtained by using the MR catheter. Two types of coils of 5 mm and 20 mm in diameter were fabricated. Both of the coils were designed to have inductance of 1.0 μH at 8.5 MHz. The proto-type MR catheters were made by attaching the micro coils to the tip of acrylic pipes. In order to evaluate the MR catheters, the sensitive area and SNR (Signal to Noise Ratio) were measured. SNRs of the MR catheters were about three to eight times higher than that of a standard medical coil. Furthermore, we demonstrated that high resolution MR images can be achieved by using the MR catheters. MR images of a gumbo (Abelmoschus esculentus) were acquired with 0.5 × 0.5 × 1.0 mm3 resolution. While clear MR images were not able to be taken by the standard medical coil due to its low SNR, we were able to observe the gumbo and distinguished its seeds one by one in the MR images taken by the MR catheters.

Original languageEnglish
Title of host publicationProceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007
Pages549-552
Number of pages4
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event20th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2007 - Kobe, Japan
Duration: 2007 Jan 212007 Jan 25

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Other

Other20th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2007
CountryJapan
CityKobe
Period07/1/2107/1/25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Takahashi, H., Dohi, T., Matsumoto, K., & Shimoyama, I. (2007). A micro planar coil for local high resolution magnetic resonance imaging. In Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007 (pp. 549-552). [4433156] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)).