MRI Compatible Lower-extremity Motion Simulator: LoMS

• Ikeda Takahiro

  Department of Intelligent Interaction Technologies, Graduate School of System and Information Engineering, University of Tsukuba

• Matsushita Akira

  Center for Cybernics Research, University of Tsukuba

• Saotome Kousaku

  Center for Cybernics Research, University of Tsukuba

• Hasegawa Yasuhisa

  Department of Micro-Nano Systems Engineering, Graduate School of Engineering, Nagoya University Division of Intelligent Interaction Technologies, Faculty of Engineering, Information and Systems, University of Tsukuba

• Matsumura Akira

  Center for Cybernics Research, University of Tsukuba Department of Neurosurgery, University of Tsukuba Hospital

• Sankai Yoshiyuki

  Center for Cybernics Research, University of Tsukuba Division of Intelligent Interaction Technologies, Faculty of Engineering, Information and Systems, University of Tsukuba

Bibliographic Information

Other Title

• MRI適合性を有する下肢動作提示システムLoMS
• MRI テキゴウセイ オ ユウスル カシ ドウサ テイジ システム LoMS

Abstract

This paper describes a motion simulator for the lower extremities of human in a magnetic resonance imaging (MRI) environment. The motion simulator provides physical support for a wearer to move his/her lower extremities like gait. The simulator also provides his/her sole contact sensation like floor reactive force during gait. An MRI is one of the most powerful tools to measure brain activity, and requires that a device driven in MRI environment is MRI compatible. This paper shows the MRI compatibility of the simulator which consists of nonmagnetic materials and actuators. We confirm that the simulator does not affect quality of image of MRI adversely when a distance between the simulator and a head coil of the MRI is more than 300[mm]. When MRI measures brain activity of human wearing LoMS, the distance is more than 400[mm]. We also confirm that LoMS can measure own joint angles with potentiometers through simple low-pass filters avoiding noise due to MRI. Then we measure brain activity of a man wearing LoMS during gait-like motion and the brain region related to gait is activated by the motion.

Journal

• Journal of the Robotics Society of Japan

  Journal of the Robotics Society of Japan 33 (2), 115-123, 2015

  The Robotics Society of Japan

Keywords

• MRI Compatibility
• Motion Simulator
• fMRI
• Gait
• Brain Activity

Details

• CRID: 1390282679705628800
• NII Article ID: 130005065133
• NII Book ID: AN00141189
• DOI: 10.7210/jrsj.33.115
• ISSN: 18847145
• ISSN: 02891824
• NDL BIB ID: 026252232
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026252232
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed