Myocardial tissue doppler velocity imaging in children: Comparative study between two ultrasound systems

Laurens P. Koopman, Cameron Slorach, Cedric Manlhiot, Brian W. McCrindle, Mark K. Friedberg, Luc Mertens, Edgar T. Jaeggi

Research output: Contribution to journalArticlepeer-review

Abstract

Background: The investigators compared pulsed-wave tissue Doppler (PWTD) and color tissue Doppler (CTD) ventricular tissue velocities obtained using Vivid 7 (GE) and iE33 (Philips) ultrasound systems within a 30-minute time frame and examined interobserver and intraobserver variability. Methods: Longitudinal PWTD and CTD images were prospectively acquired in 49 children from the base of the right and left ventricular free wall and septum and stored for offline analysis. Results: Intraobserver and interobserver coefficients of variation for PWTD velocities ranged from 4% to 6% and 5% to 10% for GE and from 1% to 10% and 2% to 14% for Philips, respectively. Intraobserver and interobserver coefficients of variation for CTD velocities ranged from 4% to 15% and 6% to 24% for GE and from 6% to 19% and 7% to 25% for Philips, respectively. Mean biases between the two systems for PWTD velocities, expressed as percentage differences, were around 0%, with the narrowest limits of agreement for systolic velocities at the septal annulus and the widest limits of agreement for early diastolic velocities at the lateral tricuspid valve annulus, respectively. Peak CTD-derived velocities were significantly and consistently lower for Philips compared with GE. Conclusions: Agreement between GE-derived and Philips-derived PWTD velocities was reasonable, whereas CTD-derived velocities differed substantially.

Original languageEnglish (US)
Pages (from-to)929-937
Number of pages9
JournalJournal of the American Society of Echocardiography
Volume23
Issue number9
DOIs
StatePublished - Sep 1 2010
Externally publishedYes

Keywords

  • Children
  • Color tissue Doppler
  • Myocardial function
  • Pulsed-wave tissue Doppler

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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