Gamma Knife Stereotactic radiosurgery (GK-SRS) is a highly precise form of radiation therapy that was designed to treat tumors and lesions in the brain. Even though it is called surgery, radiosurgery does not involve actual surgery. In addition, there is no knife either. With regards to ocular melanoma and choroidal metastases, stereotactic radiosurgery has a more than 20-year long track record as a valid method that achieves comparable tumor control rates, as compared with other forms of radiation treatment. Legacy Devers Eye Institute is the only institution in the Pacific Northwest offering this treatment modality for patients with ocular malignancies.
The stereotactic radiosurgery machine uses narrow beams of gamma radiation to target the tumor. A metallic helmet that surrounds the patient’s head helps to precisely focus the radiation beam. The radiation distorts or destroys the DNA of the tumor cells, which stops them from growing and thereby inducing shrinkage of the tumor.
A Gamma Knife procedure for the treatment of ocular melanoma involves a multidisciplinary team. The team members may involve:
Gamma Knife treatment is a one-day, outpatient procedure and generally involves these four steps:
GK-SRS is an efficacious primary method of treating uveal melanomas and choroidal metastases, with reliable tumor control rates. GK-SRS is particularly helpful for: