Gamma Knife Radiosurgery
During the second half of the 20th century, a technology for non-invasive brain tumor treatment was discovered. Swedish Physicist, Lars Leksell is the man behind the Leksell Gamma Knife. This machine uses gamma beam radiation to target brain tumors, that in other words were inoperable.
This is also useful in treatment of complex trigeminal neuralgia, acoustic neuroma, arteriovenous malformations, pituitary adenoma. Earlier models used a single high beam dose to target tumor cells, and they demanded a stricter approach.
The most advanced model known as the Gamma Knife ICON system offer a more flexible approach. It allows for multiple repeated beams, with or without a head frame.
Treatment of brain tumors using stereotactic radiosurgery (Gamma Knife surgery) require an interdisciplinary team. They are: Neurosurgeons, Physicists, Radio oncologists, and a Registered Nurse.
A head frame with pins is worn before a CT/MRI image is taken to mark the tumor targeted. A fraction dose is then determined by the team. A collimator frame is then worn for a more precise Gamma beam radiation. This is required to spare healthy brain tissues.
Procedure may last btw 2 to 4 hrs. and symptoms after procedure may include, headache, nausea, vomiting. dizziness, loss of balance. Overtime, widespread confidence of this technology has grown as an alternative minimally invasive therapy for various brain tumors. Its cure rate is determined to be >90%.
Gamma Knife technology is currently used in Aversi Clinic, Georgia.