[Variability of ultrasonography velocity assessment of the carotid arteries].

Purpose: To assess the intraobserver variability of echoDoppler sonographic measurement of various carotid arteries parameters.

Materials And Methods: Repeated bilateral carotid examinations were performed in ten healthy subjects, using three color-coded duplex ultrasound systems (two Acuson 128 XP, one ATL HDI 3000) and different linear probes. Each examination included two successive sets of measurements.