[Xeroradiographic field control in telecobalt therapy of the cranial and ear-nose-throat regions].

The possibility of direct field verification by xeroradiography in Co-60-teletherapy of the head- and ENT-regions is described. By the effect of intensified contours, anatomical details may present themselves sufficiently as to make possible an objective verification of the irradiation. The particular advantages of this method consist in the simple handling and in the acceleration of the therapy preparations as well as in the possibility of documentation of the radiotherapeutic treatment. It has to be examined if the xeroradiographical procedure can be utilized for direct verification of the fields in other regions of the body too.