Ruiwang Huang1, Bida Zhang2
1State Key Lab of Cognitive
Neuroscience and Learning, Beijing Normal University, Beijing , 100875,
China; 2Siemens Mindit Magnetic Resonance, Siemens Healthcare MR
Collaboration NE Asia,
Human
brain functional studies have been generally performed with BOLD-fMRI, but
the spatial location and distribution of the activation map is not accurate.
Recently, it has been suggested that the diffusion-weighted functional
magnetic resonance imaging (dFMRI) may be sensitive to the true neuronal
activation. However, the influence of b-value on the activation region is not
fully understood. Here we performed a visual stimulation study on twelve
subjects with dFMRI (b-value=50/400/800/1200/1600s/mm2) and BOLD-fMRI, and
constructed the population-based activation maps. The locations and
distributions of dFMRI and BOLD-fMRI measurements were compared, and the
consistency of dFMRI study was evaluated.