492-493 / 1363
Echo-Planar-Imaging (EPI)
•
Entire k-space acquired in one shot
•
Fastest Cartesian readout available (~50 ms)
•
No 180 pulses => gradient echo instead of spin echo (BOLD, ASL, RT-MRI)
Gradient-Echo EPI
90
o
RF
Gx
Gy
Gz
T2* decay