High-Intensity Focused Ultrasound Ablation Therapy of Gliomas.

Ultrasound in clinical medicine is most commonly associated with imaging, but can be harnessed to yield an array of biological effects, including thermal ablation of brain tumors. Therapeutic ultrasound has been studied for many years, but only within the last decade has the technology reached a point where it is safe and practical for clinical adoption. Using large, multi-element arrays, ultrasound can be focused through the skull, and combined with MRI for image guidance and real-time thermometry, to create lesions in the brain with millimeter accuracy. Using this technology, true non-invasive surgery can be accomplished with immediate tumor killing. Combining the ablative capabilities of focused ultrasound with its other unique effects, such as blood-brain barrier disruption and radiosensitization, may eventually result in change of the current glioma treatment paradigm.