Abstract #2351
Comparison of single- and multi-echo PRF-shift thermometry and method for penalized-likelihood multi-echo temperature reconstruction
Pooja Gaur 1,2 and William A Grissom 2,3
1
Chemical and Physical Biology, Vanderbilt
University, Nashville, Tennessee, United States,
2
Institute
of Imaging Science, Vanderbilt University, Nashville,
Tennessee, United States,
3
Biomedical
Engineering, Vanderbilt University, Nashville,
Tennessee, United States
Single echo scans with low bandwidth are commonly used
in guiding thermal therapies, but are susceptible to
distortions caused by both heating-induced and static
off-resonance effects, resulting in distorted
temperature maps. We show that multi-echo scans with
higher bandwidths can alleviate distortions without
sacrificing temperature SNR. A penalized-likelihood
temperature reconstruction algorithm is also proposed
for multi-echo thermometry, that produces more accurate
temperature maps than previous methods, and does not
require phase unwrapping.
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