Abstract #1655
3D UTE MR thermometry of frozen tissue during cryoablation: clinical feasibility at 3T
Christiaan G. Overduin 1 , Eva Rothgang 2 , Jurgen J. Ftterer 1 , and Tom W.J. Scheenen 1
1
Radiology, Radboud University Medical
Center, Nijmegen, Netherlands,
2
Siemens
Corporate Research, Erlangen, Germany
This study is the first to explore the feasibility of 3D
ultrashort TE (UTE) MR thermometry of frozen tissue
during cryoablation on a clinical MR system at 3T. We
demonstrated 3D UTE imaging to achieve measurable MR
signal from frozen tissue down to temperatures as low as
-40C within a clinically realistic time-frame (~1min.)
and with clinically sufficient spatial resolution
(1.63mm isotropic). Using a calibration curve, this
allowed the 3D estimation of temperatures inside the
iceball during cryoablation. In vivo application of this
technique could allow interventionalists feedback on the
effective treatment zone during MR-guided cryoablation
procedures, however a robust calibration method will be
needed.
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