AN ADJUSTMENT MEANS FOR THE SOURCE HEAD OF A COBALT 60 TELETHERAPY UNIT

摘要

An adjustment means for the source head being also the source drawer of a cobalt 60 Teletherapy unit for alignment with the object to be radiated includes a first means for adjusting the source head for bringing the central axis of the w head parallel to the axis of rotation of the L arm and a second means for bringing the source head to the precise w degree position to make the central ray of the radiation w the adjustment of the first means is adapted to be w by a floating plate which is secured to the source w through its flange, said floating plate being located within the front end or mouth of the L arm and through bolts the adjustment is achieved and the second means for adjustment is actuated by a pneumatic cylinder having a plun w rigidly mounted on the L arm, and adjustable block w two guide rollers mounted on the flange of the source w the plunger being adapted when operated to engage it-w between the rollers, the plate on which the rollers are mounted being in turn mounted being in turn mounted on a platform rigidly located on the flange of the source head. (Prov. Specn. 10 Pages. Comp. Specn. 12 Pages. Drg. 2 Sheets).