2.5D Thermometry Maps for MRI-Guided Tumor Ablation

Fast and reliable monitoring of volumetric heat distribution during MRI-guided tumor ablation is an urgent clinical need. In this work, we introduce a method for generating 2.5D thermometry maps from uniformly distributed 2D MRI phase images rotated around the applicator's main axis. The can be fetched directly MR device, reducing delay between image acquisition visualization. For reconstruction, use weighted interpolation on cylindric coordinate representation to calculate value voxels in region interest. A pilot study 13 ex vivo bio protein phantoms with flexible tubes simulate sink effect was conducted evaluate our method. After thermal ablation, compared measured coagulation zone extracted post-treatment data set output map. results show mean Dice score 0.75+-0.07, sensitivity 0.77+-0.03, reconstruction time within 18.02ms+-5.91ms. Future steps should address improving temporal resolution accuracy, e.g., incorporating advanced bioheat transfer simulations.