[Transcranial sonography and duplex sonography in children with cysts and tumors of the cranial base].

Clinical application of transcranial real-time sonography and duplex scan is demonstrated in 4 patients (2.5 to 14 years) with cysts and tumors in the basal brain area. A good correlation between ultrasound and CT-scan can be shown. With transcranial duplex scan intravascular flow velocities in the basal brain arteries can be measured. Simultaneous localization of the Doppler gate in a clearly defined part of the vessel is possible. In addition this non-invasive method can demonstrate the anatomical location of the basal brain vessels in relation to cysts and tumors. This was previously possible only with angiography.