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Abstract #1242

Skeletal Muscle Motion Maps from Post-Contraction Gradient Echo Spin Saturation Effect

Andrew D Davis 1 and Michael D Noseworthy 2,3

1 Medical Physics and Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada, 2 Electrical and Computer Engineering, McMaster University, Ontario, Canada, 3 School of Biomedical engineering, McMaster University, ON, Canada

Gradient echo echo planar imaging (GRE-EPI) has often been used to assess skeletal muscle, but not with regards to muscle displacement. Muscle displacement causes a signal re-saturation effect during GRE-EPI scanning. In this study, GRE-EPI time series were acquired, and post-exercise images were processed voxel-wise to assess the saturation effect present. Muscle displacement maps were generated from the post-processing scheme. The maps were examined for motion direction and proximity to the deep aponeuroses of the triceps surae muscles, and were found to agree with expectations for the plantar flexion exercise performed.

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