A magnetic helmet shrunk a deadly tumor in its first test - TechCrunch

The 53-year-old patient who underwent the treatment ultimately died due to an unrelated injury, but an autopsy of his brain showed that the procedure had removed 31% of the tumor mass in a short time.

The test marked the first noninvasive therapy for a deadly form of brain cancer known as glioblastoma.

The helmet features three rotating magnets connected to a microprocessor-based electronic controller operated by a rechargeable battery.