Then the molds are filled with a molten lead alloy. Once the alloy cools, the blocks are ready for use. If the radiation beam needs to be shaped for your treatment, you will get your own set of molds made especially for you. Your molds will be stored at the Center for Cancer Care and they will be used each time you receive a treatment. The actual number of treatments you will receive depends on the total dose you need, the size and location of your cancer, the type of tumor and your general health.
Radiation is given a little at a time, rather than all at once, to protect healthy body tissues.
Treatments are usually received five days a week for a period of several weeks. Weekend breaks give normal cells a chance to recover. The linear accelerator is the machine which actually delivers the radiation treatment. It produces ionizing radiation which destroys cancer cells. Before each treatment, you may be asked to change into a hospital gown.