Why the study?
Does Doppler ultrasound accurately differentiate severe carotid stenosis from occlusion compared to angiography in patients undergoing preoperative evaluation?
Does Doppler ultrasound accurately differentiate severe carotid stenosis from occlusion compared to angiography in patients undergoing preoperative evaluation?
Although Doppler ultrasound is highly accurate, infrequent but critical errors in diagnosing carotid occlusion suggest angiography remains necessary for surgical candidates when duplex findings are unclear.
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Supports Doppler ultrasound for carotid stenosis evaluation; leaves open confirmatory angiography before surgery in equivocal cases.
Bornstein et al. (1988) studied this question.
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