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- W2034352481 abstract "The results of in vitro and in vivo studies to determine the application and limitations of frequency analysis for CW Doppler ultrasound assessment of carotid stenoses are reported. In the in vitro study, the peak Doppler frequency and a new spectral broadening index were determined proximal to, at, and distal to axisymmetric and asymmetrical model stenoses. Good correlations with percent area stenoses were found. In the clinical study, 162 cases were examined using a 4 MHz Doppler system and by standard four-vessel arteriography. Peak frequencies of greater than 3.8 KHz were diagnostic of internal carotid stenoses of 3.2 mm minimum lumen diameter or less, with a sensitivity of 92% and a specificity of 94%. Spectral broadening, evaluated by subjective grading, yielded similar results." @default.
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- W2034352481 date "1982-01-01" @default.
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- W2034352481 title "A critical study of ultrasound Doppler spectral analysis for detecting carotid disease" @default.
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- W2034352481 doi "https://doi.org/10.1016/0301-5629(82)90083-7" @default.
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