[The use of computer tomography for radiation therapy of cerebral tumours (author's transl)].

The application of computer tomography should be extended for indicating the need and choice of radiotherapy for cerebral tumours, and for observing the effects of treatment. In 26 patients it has been shown that CT is superior to conventional neuro-radiological methods in showing indications and in planning of radiation therapy. Forms of treatment can be suitably adapted where the histological type of the tumour is known. In most cerebral tumours, the beneficial effect of irradiation has been evident in our patients. Our criteria were based on the concept of "clinical malignancy", no attempt was made at a histological classification of the tumours.