Immobilization Device for Radiation Treatment

A method of immobilizing an area for radiation treatment comprising the steps of:

• inserting an immobilization device for radiation treatment into a cavity of a human receiving radiation treatment, said immobilization device for radiation treatment comprises an inflatable structure having one or more non-radiopaque areas surrounded by a radiopaque area configured to confine the delivery of radiation through said one or more non-radiopaque areas and to shield a surrounding area from said radiation with said radiopaque area, wherein said inflatable structure inflates from a non-inflated size to a maximum inflated size;
• positioning said one or more non-radiopaque areas of said inflatable structure over the area receiving radiation treatment;
• inflating said inflatable structure;
• and
• wherein during said radiation treatment, the delivery of radiation to said treatment area is confined through said one or more non-radiopaque areas and said radiopaque area shields a surrounding area from said radiation.