Abstract #0557
CT-like 3D Isotropic Fat-Suppressed Dynamic Contrast Enhanced MR Enterography
Ivan E. Dimitrov 1,2 , Ananth J. Madhuranthakam 2,3 , Qing Yuan 3 , William A. Grissom 4,5 , Takeshi Yokoo 2,3 , and Ivan Pedrosa 2,3
1
Philips Medical Systems, Cleveland, OH,
United States,
2
Advanced
Imaging Research Center, University of Texas
Southwestern Medical Center, Dallas, TX, United States,
3
Radiology,
University of Texas Southwestern Medical Center, Dallas,
TX, United States,
4
Biomedical
Engineering, Vanderbilt University, Nashville, TN,
United States,
5
Radiology,
Vanderbilt University, TN, United States
Acquisition of clinical dynamic contrast-enhanced (DCE)
MR Enterography is challenged by: (1) need for
breath-held high-resolution imaging of the entire
abdomen and pelvis; (2) homogenous fat suppression over
large FOVs; (3) preferred positioning of patients arms
along the side of the abdomen to increase compliance. To
address these challenges we combine: (a) massive
parallel imaging acceleration in two directions; with
(b) aggressive reduction of the left-to-right FOV with
suppression of out-of-FOV signals by combining sagittal
3D excitation for coronal imaging with custom-designed
RF pulses having near-zero stopband excitation. These
pulses allow for shorter TEs such that the mathematical
conditions for proper DIXON-based water/fat separation
are maintained. High-resolution fat-suppressed 3D
isotropic,
CT-like
DCE
acquisitions of the abdomen/pelvis were achieved.
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