Abstract #3672
Improved Temperature Reconstruction for Multiple-Echo SPGR
Michael Marx 1 and Kim Butts Pauly 2
1
Electrical Engineering, Stanford University,
Stanford, California, United States,
2
Radiology,
Stanford University, Stanford, CA, United States
Multiple-echo 2DFT SPGR was implemented for temperature
monitoring, and compared with single-echo SPGR. It was
found that performing a weighted average of individual
echo temperature measurements gave significantly better
temperature uncertainty than using least squares linear
fitting to find B0 for each time point. Using the
weighted average approach, combined temperature
uncertainty matched expectations for a single readout of
the same duration, and was close to achieving the upper
bound on performance found by analyzing each echos
uncertainty.
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