Hongpyo Lee1, Yoonho Nam2, Min-Oh Kim1, Dongyeob Han1, Sung-Min Gho1, and Dong-Hyun Kim1
1School of Electrical and Electronic Engineering, Yonsei University, Soeul, Korea, Republic of, 2Department of Radiology, Seoul St. Mary Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea, Republic of
Recently, myelin water fraction was investigated using
multi-echo GRE data. In case of complex model fitting for MWF, only a small fraction
of the total signal is used, small artifacts caused by physiological motion can
induce severe noise in MWF. To overcome this problem, radial trajectory which
is known to have robustness against object motion can be used. Also, this
trajectory has the additional advantage of acquiring the more center of k-space
than Cartesian trajectory which is helpful for detecting accurate T2* decay
curve, and it may provide higher SNR and improved quantification. In this
abstract, we
demonstrated that the radial acquisition can reduce artifacts and improve image
quality in MWF.
