Fixation Method and Image Acquisition for fMRI during stepping

2014 Fiscal Year Final Research Report

• Project/Area Number: 25870090
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Radiation science; Brain biometrics
• Research Institution: University of Tsukuba
• Principal Investigator: SAOTOME Kousaku 筑波大学, サイバニクス研究センター, 研究員 (80608795)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 機能的磁気共鳴画像 / モーションアーチファクト / ステッピング / 固定方法

Outline of Final Research Achievements

The trunk fixation method and data acquisition parameters for functional MRI during stepping were investigated. The measurements of head velocities during stepping by using motion capture system and fMRI acquisitions were performed to twelve healthy volunteers. The head velocity during stepping decreased statistically significant difference by using the trunk fixation method. Moreover, the motor areas of the legs were represented on fMRI activation map in every case and the deactivation areas, which caused by motion artifact, were smaller in some cases. However, the trunk fixation method could not reduce deactivation areas in other cases. We could theoretically moderate the image acquisition parameters to match the data acquisition time with the smaller head velocity time. Further investigations need in future work.

Free Research Field

磁気共鳴画像