http://www.radonc.jhmi.edu/radiosurgery/

It's a patient support and information organization for those who have had or may have stereotactic radiosurgery brain tumor treatments and has the following purposes: to act as an information source, including current medical advances for physicians and health care personnel interested in the treatment of brain tumors; to promote and support research, early diagnosis and treatment of brain tumors; to educate the public regarding symptoms suggestive of brain tumors.