Abstract
The fact that ionising radiation affects photographic film is the basis of film dosimetry. This is the most sensitive method of dosimetry and also has intrinsic spatial resolution. The films are not only thin but are available in large sizes, thus making it possible to analyse radiation fields. In addition, film dosimetry provides a visual record of the radiation field in the plane in which the film lies. In this study Selectron applicators were embedded within wax phantoms, and the films were irradiated to obtain dose distributions in the coronal plane. The film dose distributions were compared with computed dose distributions and the dose values at Manchester point A were also evaluated. The distributions obtained from film generally agree with the computed distributions with a slight deviation near the vaginal colpostats. The absolute dose values at point A could not be evaluated so accurately.
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