[Dynamic CT in the follow-up assessment of irradiated intracranial tumors].

The importance of follow-up monitoring of the course of irradiated intracranial tumours was underlined by a study of 98 cerebral dynamic computer tomograms made on 38 irradiated intracranial tumour patients. It is demonstrated that dynamic cerebral CT is a sensitive method for assessing tumour vascularisation and for assessing a disturbance of the blood-brain barrier. An adequately adjusted and standardised examination programme is demonstrated and recommended for determining the blood-brain barrier disturbance. The assessment criteria of the density-time curves for evaluating the radiotherapeutic effectively are presented; in this connection, the change in tumour vascularisation. In conclusion, the article explains the most important indications for cerebral dynamic CT in intracranial tumours.