High sensitive 3D micro coil for MRI imaging of a cell

2017 Fiscal Year Final Research Report

• Project/Area Number: 26709015
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Intelligent mechanics/Mechanical systems
• Research Institution: Chuo University
• Principal Investigator: Dohi Tetsuji 中央大学, 理工学部, 准教授 (20447436)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: MEMS・NEMS / マイクロコイル / 核磁気共鳴画像（MRI） / マイクロ・ナノメカトロニクス / マイクロセンサー

Outline of Final Research Achievements

In this study, we fabricated high sensitive micro RF coils for small samples and high efficiency micro gradient coils for small magnetic resonance imaging (MRI) apparatus. As a high sensitive micro RF coil, screw shaped micro coils, bicone-shaped micro coils, and spring shaped micro coils were fabricated. By assembling flexible Cu/polyimide substrate onto 3D printed jigs, we fabricated gradient micro coils for a compact MRI system. Since the gradient magnetic field efficiency was 10 times stronger than the hand-winding coils, high resolution MRI image can be expected.
Then the micro RF coils, the gradient micro coils, and an alignment mechanism were integrated as a compact MRI system. As a result, MRI images with voxel size of 50 μm were realized, and we could take MRI images of small samples such as a Xenopus oocyte.

Free Research Field

マイクロ・ナノバイオ医療デバイス