Abstract #2357
Preliminary study on motion correction in model-based MR thermometry
Dengrong Jiang 1 , Dan Zhu 2 , Shuo Chen 2 , Shuo Chen 1 , and Kui Ying 1
1
Engineering Physics, Tsinghua University,
Beijing, Beijing, China,
2
Biomedical
Engineering, Tsinghua University, Beijing, Beijing,
China
Goal of this work is to correct intra-frame motion
induced errors in model-based MR temperature mapping.
Model-based temperature mapping exploits multi-echo
signal model to estimate temperature information, thus
eliminates the effects of field drifting and
inhomogeneity, and is robust to inter-frame motion.
However, it is sensitive to intra-frame motion due to
its relatively long acquisition time. We addressed this
problem by incorporating motion models into multi-echo
image reconstruction to compensate for motion induced
phase distortions and image artifacts. A prototype
framework of motion correction was proposed in this
work, and simulations were performed to validate its
efficiency.
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