Wayne R. Dannels1, Xiangxian Shou2,
Robert Anderson1, Mitsue Miyazaki3
1Toshiba Medical Research Institute,
Mayfield Village, OH, United States; 2Department of Physics, Case
Western Reserve University, Cleveland, OH; 3Toshiba Medical
Research Institute, Chicago, IL, United States
FSE
sequences can be adapted either to maintain brightness or to suppress the
signal of moving blood. Subtraction methods with FSE can generate
angiographic images without injection of contrast agents. 3D FSE variants
with variable refocusing angle (VRA) of the echo train are naturally suitable
for high scanning efficiency and SAR reduction. Flow sensitivity
dependienceis on sequence parameters are analyzed for 3D VRA FSE angiography
applications. In vivo testing shows that flow sensitivity can be maintained
while SAR is reduced.