Kummer D
Z Gerontol. 1985 Jan-Feb;18(1):28-36.
Percutaneous measurements by Doppler sonography over the carotid and vertebral arteries of the neck may detect the presence of stenosis in arteries with a high precisions especially for the carotid arteries. This paper shall give a survey of the methods of directional Dopplersonography, its principle and techniques.