Jung-Jiin Hsu1, Gary H. Glover2
1Department of Radiology, University of
Miami School of Medicine, Miami, FL, United States; 2Lucas Center
for Imaging, Stanford University, Stanford, CA, United States
Z-shimming is an effective
method to mitigate the signal loss caused by through-slice magnetic field
inhomogeneity and is conventionally implemented by two-dimensional
imaging. When z-shimming is implemented with three-dimensional imaging, more z-shims are available to reconstruct
images of higher quality. In this
work, we show that accelerated three-dimensional z-shimming by partial k-space
acquisition can significantly increase the number of available z-shims and improve temporal
resolution for fMRI without activation detectablility being compromised.