This is a radiation treatment method used to treat cancer by placing radioactive material inside the patient’s body. The primary reason for putting the radioactive substance in the patient’s skin is to kill existing cancer cells and ultimately shrink tumors in the body. This method gives doctors a chance to use a higher radiation dosage to treat a smaller cancer area quickly. When you are scheduled for this treatment method, your radiation oncologist would inform you how you can prepare adequately for the treatment. In addition, your radiation oncologist might use a computer program to schedule and plan your therapy session.