Abstract #5352

Brain q-space imaging: Mean displacement measurement by SMS, grid sampling, and multi-shell QSI

Koji Sakai¹, Hiroyasu Ikeno², Hiroshi Imai³, Kentaro Akazawa¹, Masashi Yasuike¹, Hitomi Nagano¹, and Kei Yamada¹

¹Kyoto Prefectural University of Medicine, Kyoto, Japan, ²Kyoto Prefectural University of Medicine Hospital, Kyoto, Japan, ³Siemens Healthcare K. K., Tokyo, Japan

The comparisons of mean displacement (MD) from multi-shell QSI (msQSI) and grid sampling QSI (gsQSI) were executed by anisotropic diffusion phantom and human brain. In addition, the effect of the number of slices excited and acquired simultaneously (SMS factor) we also investigated. The MDs of msQSI and gsQSI were different. The shorter diffusion time on gsQSI might effect these differences. SMS factors on msQSI showed difference among the acceleration. On contrary, SMS factors on gsQSI did not show any difference among the acceleration.

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