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Abstract #5126

Very Fast T2* Imaging by Using Improved Echo-Shifted Gradient-Recalled-Echo (IESGRE)

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.