Abstract: An apparatus is provided to fix a thermoplastic mask to a patient. The apparatus includes a member formed to be positioned adjacent a cranio facial bone, a fixation member coupled to the member, and a fastener plate. The fastener plate couples the mask to the fixation member so that the member is in a fixed position relative to the mask.

Abstract: An apparatus for use in optimizing radiation dose distributions to a rectum and a bladder of a patient during the treatment of malignancies of female genitalia is provided in accordance with the present invention. The apparatus includes a colpostat intracavitary implant including a housing portion adapted to receive a radiation source therein and a jacket. The jacket defines a cavity sized to receive the housing portion. The jacket is configured to selectively expand in volumetric size to move the rectum and the bladder away from the radiation source.