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Abstract #1572

Diffusion-Weighted TE-Dependent FMRI Signal in Rat Somatosensory Cortex at 7 T

Joonas Arttu Autio1,2, Jeff Kershaw1,3, Takayuki Obata1, Sayaka Shibata1, Daigo Kuroiwa1, Iwao Kanno1, Ichio Aoki1

1Molecular Imaging Center, National Institute of Radiological Sciences, Inage-Ku, Chiba, Japan; 2National bio-NMR facility, University of Kuopio, Kuopio, Eastern Finland, Finland; 3School of Bioscience and Biotechnology, Tokyo Institute of Technology, Midori-Ku, Yokohama, Japan

Diffusion-weighted fMRI study was performed on alpha-chloralose anaesthetized rats at 7 T with somatosensory stimulation. Measurements were made for a range of b-values 0-2000 s/mm2 and echo-times 30, 60 and 90 ms. The signal increase often observed at high b-values was not observed, nor was there any significant attenuation of the post-stimulus undershoot.