Reproducibility and accuracy of echocardiographic measurements of left ventricular parameters using real-time three-dimensional echocardiography
| Autor: | Thomas H. Marwick, Carly Jenkins, Kristen Bricknell, L. Hanekom |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Male
Observer Variation Reproducibility Accuracy and precision Ejection fraction medicine.diagnostic_test business.industry Echocardiography Three-Dimensional Reproducibility of Results Hemodynamics Magnetic resonance imaging Three dimensional echocardiography Middle Aged Magnetic Resonance Imaging Mean difference Ventricular Dysfunction Left Sonographer medicine Humans Female Prospective Studies Cardiology and Cardiovascular Medicine business Nuclear medicine |
| Zdroj: | Journal of the American College of Cardiology. 44:878-886 |
| ISSN: | 0735-1097 |
| DOI: | 10.1016/j.jacc.2004.05.050 |
| Popis: | ObjectivesWe sought to determine whether assessment of left ventricular (LV) function with real-time (RT) three-dimensional echocardiography (3DE) could reduce the variation of sequential LV measurements and provide greater accuracy than two-dimensional echocardiography (2DE).BackgroundReal-time 3DE has become feasible as a standard clinical tool, but its accuracy for LV assessment has not been validated.MethodsUnselected patients (n = 50; 41 men; age, 64 ± 8 years) presenting for evaluation of LV function were studied with 2DE and RT-3DE. Test-retest variation was performed by a complete restudy by a separate sonographer within 1 h without alteration of hemodynamics or therapy. Magnetic resonance imaging (MRI) images were obtained during a breath-hold, and measurements were made off-line.ResultsThe test-retest variation showed similar measurements for volumes but wider scatter of LV mass measurements with M-mode and 2DE than 3DE. The average MRI end-diastolic volume was 172 ± 53 ml; LV volumes were underestimated by 2DE (mean difference, −54 ± 33; p < 0.01) but only slightly by RT-3DE (−4 ± 29; p = 0.31). Similarly, end-systolic volume by MRI (91 ± 53 ml) was underestimated by 2DE (mean difference, −28 ± 28; p < 0.01) and by RT-3DE (mean difference, −3 ± 18; p = 0.23). Ejection fraction by MRI was similar by 2DE (p = 0.76) and RT-3DE (p = 0.74). Left ventricular mass (183 ± 50 g) was overestimated by M-mode (mean difference, 68 ± 86 g; p < 0.01) and 2DE (16 ± 57; p = 0.04) but not RT-3DE (0 ± 38 g; p = 0.94). There was good inter- and intra-observer correlation between RT-3DE by two sonographers for volumes, ejection fraction, and mass.ConclusionsReal-time 3DE is a feasible approach to reduce test-retest variation of LV volume, ejection fraction, and mass measurements in follow-up LV assessment in daily practice. |
| Databáze: | OpenAIRE |
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