| 摘要 |
A method of positioning, holding, and immobilization of a patient on a radiation treatment table or patient support surface. The positioning device is an improved vacuum cushion for the immobilization of a patient's full body on a support surface for some type of therapy to be accurately delivered and repeated. The patient's body is to be positioned in a manner for treatment that can be reproduced during consecutive days of radiotherapy. The upper and lower body cushions both include an outer casing with a valve that is connectable to a vacuum source. The casings contain small spheres. The immobilization device is comprised of upper and lower body cushions, both non-porous, to be evacuated of air. The cushions are adjoined by interlocking frame members fixed at proximal ends of each cushion. The device can be secured on the support surface at predetermined points using commercially available indexing bars during the procedure.
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