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Accuracy of MR thermometry during deep radiofrequency hyperthermia treatments in the pelvic region
Iva VilasBoas-Ribeiro1, Sergio Curto1, Gerard C. van Rhoon1,2, and Margarethus M. Paulides1,3
1Department of Radiotherapy, Erasmus MC Cancer Institute, University Medical Center Rotterdam, Rotterdam, Netherlands, 2Department of Radiation Science and Technology, Faculty of Applied Sciences, Delft University of Technology, Delft, Netherlands, 3Center for Care and Cure Technologies Eindhoven (C3Te), Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands
This study indicates that change in gastrointestinal air volume can be used as a criteria for selection of patients with higher accuracy in MR thermometry. We showed that this change can be exploited for imaging based selection criteria prior to hyperthermia treatment.
Figure 5: Quantification of MR thermometry accuracy in all patients and in the selected patients. The red dotted line represents the thresholds for acceptance.
Figure 3: Temperature distributions acquired during treatment from the representative patient, where the time corresponds to the minutes from the time that the RF power was applied. The slice presented correspond to the middle slice (yellow line from Figure 1).