Ananth J. Madhuranthakam1, Huanzhou Yu2,
Ann Shimakawa2, Martin P. Smith3,4, Scott B. Reeder5,
Neil M. Rofsky3,4, Charles A. McKenzie6, Jean H.
Brittain7
1MR Applied Science Lab, GE Healthcare,
Boston, MA, United States; 2MR Applied Science Lab, GE Healthcare,
Menlo Park, CA, United States; 3Radiology, Beth Israel Deaconess
Medical Center, Boston, MA, United States; 4Harvard Medical
School, Boston, MA, United States; 5Radiology, Medical Physics,
Biomedical Engineering and Medicine, University of Wisconsin, Madison, WI,
United States; 6Medical Biophysics, University of Western Ontario,
London, Ontario, Canada; 7MR Applied Science Lab, GE Healthcare,
Madison, WI, United States
FSE-IDEAL
requires at least three echoes for uniform fat-water separation. The three echoes are commonly acquired in
multiple repetitions. Recently,
methods have been proposed to reduce total scan time by acquiring multiple gradient
echoes in a repetition. Acquisition of
a fourth echo increases the flexibility for choosing the gradient echo
spacing to enable higher resolution acquisitions in reasonable scan times. We test this hypothesis in phantom studies
and show a new data acquisition approach to acquire high-resolution 3D T2-weighted
fat-water separated images of the breasts and knee with higher SNR in reduced
scan times.
Keywords