Abstract #4673
The b=0 dependence of diffusion-based functional MRI signals to measure neuronal activations
Hyug-Gi Kim 1 , Geon-Ho Jahng 2 , Dal-Mo Yang 2 , Kyung-Nam Ryu 3 , Dong-Wook Sung 3 , and Woo-Suk Choi 3
1
Biomedical Enginerring, Kyung Hee
University, Gyeonggi-do, Korea,
2
Radiology,
Kyung Hee University Hospital-Gangdong, Seoul, Korea,
3
Radiology,
Kyung Hee University Hospital, Seoul, Korea
To investigate neuronal changes depended on a b0 value
on diffusion fMRI, we designed a diffusion-based fMRI
sequence with two different b0 values. One DWI with b=0
s/mm2 (b0_b) was obtained during the first baseline scan
and another DWI with b=0 s/mm2 (b0_a) was again obtained
during the last stimulation scan. A single-shot spin
echo sequence was run for trace-weighted imaging on 16
young subjects. We calculated ADC maps using b0_a and
b0_b called as ADC_a and ADC_b, respectively. Results
and discussion are presented.
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