[Exploration of the cervical arteries. Choice and place of a non-invasive technic in relation to the Doppler test].

An analytic study of the different techniques for non-invasive vascular exploration, used to examine cervical arteries, distinguished between hemodynamic tests (continuous and pulsed Doppler, spectral analysis of frequencies, oculoplethysmography) and imaging methods (ultrasound and real time echotomographic imaging). Best performances at the present time are obtained by combined frequency spectral analysis + real time echotomography or Doppler + real time echotomography. Selection of appropriate techniques is based on clinical findings of a symptomatic or asymptomatic patient. The decision as to the need for angiography and therapy can be made either immediately after the examination by Doppler alone or after a complete investigation, depending upon the circumstances.