Why the study?
Does Power Frequency Spectral Analysis (PFSA) accurately detect and grade carotid artery stenoses in patients with carotid bifurcation lesions?
Population
41 subjects, comprising 10 young adult control subjects and 31 patients with angiographically documented…
Comparison
Power Frequency Spectral Analysis using a 5MHz… vs Angiography (reference standard)
Design
Cross-sectional
Authors
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PFSA may support noninvasive carotid stenosis grading; leaves open need for prospective validation against angiography.
Does Power Frequency Spectral Analysis (PFSA) accurately detect and grade carotid artery stenoses in patients with carotid bifurcation lesions?
Power Frequency Spectral Analysis using Doppler ultrasound provides useful indices (f50% and fmax) that accurately detect and grade carotid artery stenoses compared to angiography.
Krause et al. (1984) studied this question.
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