Article Text

PDF
Accuracy of real-time, three-dimensional Doppler echocardiography for stroke volume estimation compared with phase-encoded MRI: an in vivo study
  1. J Pemberton1,
  2. M Jerosch-Herold2,
  3. X Li1,
  4. L Hui1,
  5. M Silberbach1,
  6. W Woodward2,
  7. K Thiele3,
  8. A Kenny4,
  9. D J Sahn1
  1. 1
    Division of Pediatric Cardiology, Oregon Health and Science University, Portland, Oregon, USA
  2. 2
    Department of Radiology, Oregon Health and Science University, Portland, Oregon, USA
  3. 3
    Philips Medical Systems, Andover, Newcastle upon Tyne, UK
  4. 4
    Department of Cardiology, Freeman Hospital, Newcastle upon Tyne, UK
  1. Dr D J Sahn, L608, Pediatric Cardiology, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, Oregon, 97239–3098, USA; sahnd{at}ohsu.edu

Statistics from Altmetric.com

To the editor: Accurate measurement of cardiac output (CO) is important in clinical medicine. Current methods of calculation use two-dimensional echocardiography and ventricle volumetry or spectral Doppler pulse wave. Phase-encoded MRI is an accurate technique for volume assessment; however, is not suitable for many clinical situations, such as in those who are critically ill.

Previous work by our group has shown that real-time, three-dimensional Doppler echocardiography (RT3DDE) can accurately compute stroke volume (SV) and CO in an animal model against a “gold standard” of aortic flow probe using the left ventricular outflow tract colour Doppler signal,1 and this technique can be used in patients transthoracically.2 3

We tested the accuracy of RT3DDE of the left ventricular outflow tract for calculation of SV in a series of patients and healthy volunteers against a “gold standard” of phase-encoded MRI.

Two patients and 12 healthy volunteers took part in the study. The patients were undergoing MRI as part of their clinically indicated investigations for cardiac disease (both patients for aortic coarctation). All subjects gave written informed consent in accordance with the local Institutional Review Board.

The Philips Live 3D 7500 Sonos echocardiography system with a 3000-element 2–4 MHz xMATRIX transthoracic probe (Philips Medical Systems, Andover, Massachusetts, USA) was used for imaging. Subjects underwent echocardiography immediately before MRI.

Between three and five ECG-gated, three-dimensional colour Doppler volumes were acquired from …

View Full Text

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.