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A Comparison of Doppler Ultrasonic Waveforms Processed by Zero Crossing and Spectrographic Techniques in the Diagnosis of Peripheral Arterial Disease

The development of the transcutaneous Doppler ultrasonic blood flowmeter’-’ has intensified the search for noninvasive methods of assessment of peripheral arterial disease. The various attempts at reducing the use of arteriography by screening of patients with noninvasive measurements range from the relatively simple using inexpensive equipment5-8 through the more complex9-11 to the highly complex using very expensive equipment. 12, 13 This paper presents the comparison of a number of the commonly used parameters derived from Doppler ultrasonic waveforms with the results of arteriography. Twenty-five patients were examined within 2 weeks of arte-