Auto-calibrated simultaneous multiband cardiac GRE cine MRI at 5 Tesla
Yuan Zheng1, Lele Zhao2, Zhongqi Zhang2, Yu Ding1, and Jian Xu1
1UIH America, Inc., Houston, TX, United States, 2United Imaging Healthcare, Shanghai, China
a
Eight consecutive frames from systole to diastole. Two slices were imaged simultaneously and
shown in the first and second rows.
The temporal resolution of each frame is 3.7 ms × 15 views per shot = 56 ms. The heart
contraction and relaxation motion is well preserved in both slices.
Slice-dependent phase
modulation can be achieved by adjusting the RF excitation pulse. The blue and
red pulses are components of the multiband rf pulse for slice 1 and slice 2
respectively. The phase of slice 1 is not modulated, while the phase of slice 2
changes by π in between PE lines. In adjacent frames, a phase offset of π is
applied on slice 2.