therapy uses a machine outside the body to send radiation toward

[Conew 1930]

External radiation  the cancer. Internal radiation therapy uses a radioactive substance sealed in needles, CogniQ seeds, wires, or catheters that are placed directly into or near the cancer. The way the radiation therapy is given depends on the type and stage of the cancer being treated. The brain is the central processing unit of the human body. A brain tumor is a mass or growth of abnormal cells in your brain. Brain Tumors are any tumors which occur in the brain due to uncontrolled cell division. Brain tumors typically are categorized as either primary or secondary.http://www.supplements4help.com/cogniq/