Inter- and intra-observer variability of Doppler peak velocity measurements: An in-vitro study

Academic Article

Abstract

  • To determine the variability of pulsed Doppler peak velocity measurements, four radiologists with differing experience were tested using a calibrated flow phantom. Two ultrasound units, three probes and eight velocity rates varying between 40.5 and 78 cm/sec were studied, with a total of 303 measurements. The results were normalized against a set of 106 separate measurements made under highly-controlled conditions. The residual error standard deviation (not attributable to any systematically varied factor, including the velocity rate) was 6.8 cm/sec, with most of the remaining variation due to changing transducer or machine. Observer/equipment interactions accounted for 15.8% of the observed variability. The duration of the radiologist's Doppler experience had no significant effect. © 1990.
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Tessler FN; Kimme-Smith C; Sutherland ML; Schiller VL; Perrella RR; Grant EG
  • Start Page

  • 653
  • End Page

  • 657
  • Volume

  • 16
  • Issue

  • 7