Sung-Hong Park1,2, Tae Kim1,
1Radiology, University of Pittsburgh,
Pittsburgh, PA, United States; 2Research Imaging Institute,
Ophthalmology/Radiology, University of Texas Health Science Center at San
Antonio, San Antonio, TX, United States
We
performed high-resolution pass-band bSSFP fMRI at multiple phase cycling
angles on rat brain at 9.4T. Activation foci in fMRI maps shifted as a
function of phase cycling angle and the location of the foci was correlated
with hyperintense regions in corresponding baseline transition-band bSSFP,
some of which were also correlated with cortical surface veins or
intracortical veins. The results indicated that there is spatial
heterogeneity in signal sources (T2 or T2*) of pass band bSSFP fMRI. Baseline
transition band bSSFP could be used to predict outcomes of corresponding
pass-band bSSFP fMRI maps.
Keywords