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Abstract #3172

Investigation on the estimation performance of phase-based T2 mapping in the presence of motion

Daiki Tamada1, Xiaoke Wang1, Timothy J. Colgan1, Diego Hernando1,2, and Scott B. Reeder1,2,3,4,5
1Radiology, University of Wisconsin-Madison, Madison, WI, United States, 2Medical Physics, University of Wisconsin-Madison, Madison, WI, United States, 3Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States, 4Medicine, University of Wisconsin-Madison, Madison, WI, United States, 5Emergency Medicine, University of Wisconsin-Madison, Madison, WI, United States

The estimation performance of phase-based T2 mapping in the presence of motion was investigated using Bloch equation simulations. The steady-state signal of RF-phase modulated gradient echo imaging in the presence of motion was calculated. Linear, sinusoidal, and random motion were considered for the simulation. The results showed that phase errors induced by motion may lead to underestimation of T2 when using a gradient echo phase-based T2 mapping method.

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