Xin Li1, Hannes M. Wiesner1, Matt Waks1, Xiao-Hong Zhu1, and Wei Chen1
1Center for magnetic Resonance Research (CMRR), Department of Radiology, University of Minnesota, Minneapolis, MN, United States
1Center for magnetic Resonance Research (CMRR), Department of Radiology, University of Minnesota, Minneapolis, MN, United States
We found that SNR of the 31P MRSI signal was 1.5
times higher at 10.5T human scanner as compared to 7T, and the power dependence
of SNR on B0 was 1.7.
Figure 4. Three representative transversal slices of 31P
SNR maps of Pi acquired at (A) 7T and (B) 10.5T, overlaid with 2D CSI slice (extracted
from 3D data) acquired at the 90o nominal flip angle of the global Pi
signal. The noise level was zoomed in ×1000
times along the vertical scale. This figure clearly shows significant
improvement in spectral quality and SNR at 10.5T.
Table1. The parameters and their ratios measured at 7T and 10.5T and
used for quantification.