PMID: 6397886Sep 1, 1984Paper

Variability and reproducibility of arterial Doppler waveforms

Ultrasound in Medicine & Biology
W B CampbellR N Baird

Abstract

The variability and reproducibility of arterial Doppler waveforms are influenced by factors such as operator experience, physiological changes in the patient, and the type of Doppler processing system. Some aspects of these were studied using Laplace transform analysis of waveforms from the femoral and posterior tibial arteries of normal subjects and arteriopaths. Five consecutive waveforms were obtained from the femoral and posterior tibial arteries of normal subjects during about 1 hr of supine rest. Group 1 (n = 20) was studied 9 months before Group 2 (n = 11), early in the operator's experience of waveform recording. Variability (root mean square) of femoral and posterior Laplace delta decreased from 16.9 to 12.5%, and 23.3 to 17.9% respectively (P less than 0.05 in each case). In arteriopaths (n = 8) there was a trend to more variable results at femoral level (only significant in the case of Laplace omega 0 - P less than 0.05), while posterior tibial results tended to be less variable. Normal subjects examined in the longer term (n = 4), with a mean interval of 28 days between recordings, did not show significantly greater variability than those examined over 1 hr. There was no significant difference in variability of resu...Continue Reading

References

Jun 1, 1976·Ultrasound in Medicine & Biology·B A Coghlan, M G Taylor
Aug 1, 1979·The Journal of Surgical Research·W M BlackshearD E Strandness
Jan 1, 1972·Medical & Biological Engineering·M G Arts, J M Roevros
May 1, 1983·Ultrasound in Medicine & Biology·W B CampbellJ P Woodcock
Aug 1, 1983·British Journal of Urology·W B CampbellR N Baird
Nov 1, 1981·The British Journal of Surgery·D Demorais, K W Johnston
Jan 1, 1980·Ultrasound in Medicine & Biology·R Skidmore, J P Woodcock
Jan 1, 1980·Ultrasound in Medicine & Biology·R SkidmoreP N Wells

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Citations

Jan 1, 1986·Ultrasound in Medicine & Biology·W L CapperE P Harries-Jones
Oct 1, 1987·Ultrasound in Medicine & Biology·W J Zwiebel
Mar 1, 1986·Journal of Vascular Surgery·S C NichollsD E Strandness
Jan 1, 1988·Journal of Clinical Ultrasound : JCU·S E ChambersJ E Bell

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