Abstract #0948
Single-Shot Fast Spin Echo of Targeted Regions with Variable Refocusing Flip Angles and Quadratic Phase Pulses for Outer Volume Suppression
Valentina Taviani 1 , Daniel Litwiller 2 , Andreas M. Loening 1 , Manojkumar Saranathan 1 , Brian A. Hargreaves 1 , and Shreyas S. Vasanawala 1
1
Radiology, Stanford University, Stanford,
CA, United States,
2
GE
Healthcare, Rochester, MN, United States
Reduced-FOV Single-Shot Fast Spin Echo (SSFSE) can
provide high-resolution images of targeted regions free
from motion artifacts and with improved sharpness due to
the reduced echo train length. Outer volume suppression
using quadratic phase pulses can be used to effectively
restrict the phase-encoded FOV. The associated SAR
penalty can be offset using variable refocusing flip
angles. Although the large saturation bands needed for
body applications cause misregistration artifacts
between fat and water even for relatively high RF
bandwidths, several novel approaches presented here can
mitigate this effect. The performance of the proposed
technique is illustrated in phantoms and specific
clinical cases.
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