[Possibilities and limits of transcranial Doppler sonography]

A review of our 4-years' experience with the transcranial Doppler technique in the evaluation of cerebrovascular disease is given. The physiological variations of the measured parameters and their clinical significance are presented. The diagnosis of occlusive diseases, spasms after subarachnoid haemorrhage, arteriovenous malformations and brain death are discussed. Some technical problems and limiting factors in diagnosis are summarised.