Abstract #3677
Spline-Based Temperature Probe Registration for MRThermometry Validation in Head and Neck Hyperthermia Phantoms
Matthew Tarasek 1 , Ruben Pellicer 2 , Lorne Hofstetter 1 , Jurriaan Bakker 2 , Wouter Numan 2 , Gyula Kotek 2 , Eric Fiveland 1 , Gavin Houston 3 , Gerard van Rhoon 2 , Maarten Paulides 2 , and Desmond Yeo 1
1
MRI, GE global research, Niskayuna, NY,
United States,
2
Erasmus
Medical Center, Netherlands,
3
MRI,
GE healthcare, Netherlands
MR thermometry (MRT) validation can be difficult in head
and neck (H&N) hyperthermia treatments due to the
nonlinear trajectory of H&N temperature (T) probe
catheters. In this work, we utilize a previously
developed spline-fitting technique to reconstruct the
catheters in MR image coordinate space and present (i)
an effective approach for T probe sensor localization in
phantoms to mitigate T probe localization errors and
(ii) provide a means of more accurate proton resonance
frequency thermal coefficient characterization, which
corrects for systematic over- or underestimation of
temperature with MRT. Findings show that this method is
beneficial for MRT validation.
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