Noninvasive transcranial Doppler ultrasound in intracranial angiomas

Transcranial Doppler ultrasound is a noninvasive method to evaluate flow velocities in the basal cerebral arteries. It can provide hemodynamic data like velocity distributions, intracranial steal phenomena, and functional stenoses in angiomas as illustrated in four patients. This information may supplement conventional neuroradiologic procedures for therapeutic decisions and follow-up.