Why the study?
Does the high-low flow ratio from Doppler quantitative carotid blood flow accurately detect significant carotid stenosis in patients with cerebrovascular disease compared to cerebral angiography?
Does the high-low flow ratio from Doppler quantitative carotid blood flow accurately detect significant carotid stenosis in patients with cerebrovascular disease compared to cerebral angiography?
The high-low flow ratio using Doppler quantitative carotid blood flow is a sensitive measure for detecting significant carotid stenosis and can be used as an adjuvant to carotid duplex scanning.
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High-low flow ratio may aid carotid stenosis detection as duplex adjunct; leaves open need for prospective validation before practice change.
Meyd et al. (1992) studied this question.
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