Multi-slice thermometry was
developed that overcomes several limitations of single-slice 2DFT thermometry
in MR-guided focused ultrasound brain treatment. Using multiple-echo spiral
imaging provides much greater imaging performance, which was applied to
improved focal spot localization and to improved ablation monitoring. High-resolution
higher-precision multi-slice focal spot localization can shorten treatment time
and improve patient safety. High-speed high-precision focal spot monitoring,
combined with full-brain monitoring and 3-dimensional focal spot
characterization during ablations can improve treatment guidance and feedback
while also improving patient safety. The new sequences were validated both in vivo and in a phantom within a
clinical transducer.
