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Abstract #3714

Simultaneous T1 and PRF MR Thermometry: Optimization of Flip Angles

Tetiana Dadakova 1 , Jan Gerrit Korvink 2,3 , John Matt Pavlina 1 , and Michael Bock 1

1 Medical Physics, Department of Diagnostic Radiology, University Medical Center Freiburg, Freiburg, Germany, 2 Department of Microsystems EngineeringIMTEK, University of Freiburg, Freiburg, Germany, 3 Freiburg Institute of Advanced StudiesFRIAS, University of Freiburg, Freiburg, Germany

MR thermometry is an important tool to monitor efficiency and safety of different thermal treatment methods. Two temperature-sensitive MR parameters are used for temperature calculations: the proton resonance frequency shift (PRF) and the longitudinal relaxation time change (T1). A combination of these two methods might allow for a more precise temperature monitoring for example in fat where PRF techniques alone fail. In this work, simulations and analytical calculations for the optimal flip angle for combined PRF and T1 MR thermometry are presented.

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