A PhD student at Sheffield University mentioned ultrasound caused the rapid boiling of water. In 1988 I suffered 30% brain damage in a car accident.
Scar tissue is more dense, so physiotherapists use this to clear away limb damage. A 8 W 1 MHz ultrasound massage device is a suitable High Intensity UltraSound emitter.
Such a massage device can be purchased via Amazon. And will clear a pre-existing head injury.
Like all good scientists, I did experiments on myself – very causously. I will fix head and spinal damage – whioch is a world first. Medicine does not know it can do this!