Jian Zhang1,2, Chunlei Liu3,
Michael Moseley2
1Department of Electrical Engineering,
Stanford University, Stanford, CA, United States; 2Department of
Radiology, Stanford University, Stanford, CA, United States; 3Brain
Imaging and Analysis Center, Duke University Medical Center, Durham, NC,
United States
Echo-Shifted
Gradient-Recalled-Echo (ESGRE) can be used to acquire GRE images at
TE>TR. This property makes it an
appealing approach for fast T2* imaging. However, the original method didnt
work well with multiple-echo shift due to the ghosting artifacts. We
demonstrate an improved ESGRE method here, in which extra crusher gradients
are introduced to help establish a single steady-state among all phase
encodes. By using this approach, high quality T2* images can be acquired with
an arbitrary echo shift index. Very fast 2D/3D T2* imaging can be achieved
with iESGRE.