Why the study?
Do pulsed Doppler and real-time B-mode ultrasound imaging accurately detect carotid stenosis compared to conventional carotid arteriography in patients with pre-stroke syndromes?
Do pulsed Doppler and real-time B-mode ultrasound imaging accurately detect carotid stenosis compared to conventional carotid arteriography in patients with pre-stroke syndromes?
Pulsed Doppler and real-time B-mode ultrasound imaging are highly sensitive and specific non-invasive alternatives to conventional carotid arteriography for evaluating carotid stenosis.
May support non-invasive carotid evaluation; leaves open prospective validation before changing practice.
Recent developments in ultrasound techniques have made it possible to investigate patients with arterial disease non-invasively by using Doppler blood velocity signal analysis. Since January 1979, 189 patients were pre-stroke syndromes have been investigated by using pulsed Doppler and real-time B-mode ultrasound imaging and waveform analysis. The results were that both imaging systems were highly (more than 92%) sensitive and specific when compared with conventional carotid arteriography. The ultrasound systems detected turbulence and could also be used to measure the distensibility of the arterial wall. The results show that varying grades of carotid stenosis can be demonstrated by two ultrasonic imaging systems, and that lateral scans are particularly helpful.
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Lusby et al. (1981) studied this question.
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