Boston (SmartAboutHealth.net) - Nearly 97,000 Americans are diagnosed with a very virulent brain tumor each year, according to the National Cancer Institute.

Ruth Perko, one of the affect is about to undergo yet another treatment for this horrible disease. Like many patients, Perko has already had surgery, radiation and chemotherapy, however the tumor inside has grown back.

After 12 hours of being kept unconscious at the Cleveland Climir in Cleveland, Ohio, Ruth Perko leaves the operating room, this time around with no cancer cells in her brain.

Doctors worked through a half-inch opening in her skull, inserting a fiber-optic laser “probe” all the way down to the base of her skull.

With only four human experiments, the newly-developed probe can reach areas difficult, if not impossible to reach through conventional surgery.

“The beauty of the system is that it allows us to cut off the laser when the heat wave gets out to the point where it could cause harm,” Barnett told ABC News.