Abstract #0758

Motion insensitive T2-weighted dual-echo steady-state (DESS) imaging of the liver using alternating readout gradients

Daiki Tamada¹ and Scott B. Reeder^1,2,3,4,5

¹Radiology, University of Wisconsin-Madison, Madison, WI, United States, ²Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States, ³Medical Physics, University of Wisconsin-Madison, Madison, WI, United States, ⁴Emergency Medicine, University of Wisconsin-Madison, Madison, WI, United States, ⁵Medicine, University of Wisconsin-Madison, Madison, WI, United States

Synopsis

In this work, we present a novel method to reduce motion sensitivity for T2-weighted dual-echo steady-state (DESS) imaging, through the use of a readout alternation (ROA) approach. ROA can be achieved by inverting polarity of gradient pulses in the readout axis, alternating every TR. Bloch equation simulations that included small physiological motion in the liver, and volunteer liver imaging was performed using the proposed method. Simulation and volunteer studies demonstrated that ROA effectively suppresses signal loss and motion-related artifacts.

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