Effects of Different Parameters on Dose Distributions in Cobalt 60 Planar Rotation

Abstract
The effect of different parameters on dose distributions in cobalt-60 planar rotation were studied with the use of a digital computer. The parameters considered were field size, angle of rotation, position of the center in the phantom, shape, and size of the phantom, and the penumbra of the beam. On the basis of the results obtained, the conditions under which the rotation technique can be most advantageously used are discussed.