Key result
Carotid Doppler reliably identifies severe stenosis and occlusion but fails to detect early plaque.
Why the study?
The reliability of Doppler techniques alone for diagnosing severely stenotic lesions and total occlusions of carotid vessels compared to cerebral angiography was uncertain.
Does ultrasonic Doppler arterial scanning accurately diagnose carotid lesions compared to cerebral angiography in patients undergoing cerebral vascular evaluation?
Observational (n=42)
Does ultrasonic Doppler arterial scanning accurately diagnose carotid lesions compared to cerebral angiography in patients undergoing cerebral vascular evaluation?
Doppler ultrasound is reliable for detecting severe carotid stenosis and occlusion but may miss non-hemodynamically significant atherosclerotic plaques when compared to cerebral angiography.
May support Doppler for severe carotid stenosis and occlusion; leaves open validation in larger prospective cohorts.
This study reviews 42 patients linked by the fact that they had undergone noninvasive cerebral vascular evaluation using Doppler techniques and had subsequently undergone cerebral angiography. The ultrasonic findings were reviewed and categorized as were the angiographic findings. The 2 sets of results are correlated and analyzed. The suggestion is made based on the data that Doppler techniques alone are highly reliable at diagnosing severely stenotic lesions and total occlusions of the carotid vessels. However, the Doppler technique alone appears inadequate at diagnosing atherosclerotic plaque formation with quite significant lesions not causing major hemody namic flow changes. A further modality is thought to be needed, and the paper ends with a prospective study already in progress analyzing a nonin vasive system utilizing both Doppler and real time imaging techniques.
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Alves et al. (1982) conducted an observational in Cerebrovascular disease (n=42). Ultrasonic Doppler Arterial Scanning vs. Cerebral Angiography was evaluated on Correlation between ultrasonic Doppler findings and angiographic findings for diagnosing carotid vessel lesions. Ultrasonic Doppler arterial scanning alone was highly reliable for diagnosing severely stenotic lesions and total occlusions, but inadequate for detecting atherosclerotic plaque formation.
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