Novel Approach to Three-Dimensional Echocardiographic Quantification of Right Ventricular Volumes and Function from Focused Views
| Autor: | Rolf Baumann, Amit R. Patel, Anke Sedlmeier, Diego Medvedofsky, Victor Mor-Avi, Roberto M. Lang, Karima Addetia |
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| Rok vydání: | 2015 |
| Předmět: |
Male
medicine.medical_specialty Heart Ventricles Population Echocardiography Three-Dimensional Magnetic Resonance Imaging Cine Sensitivity and Specificity Cohort Studies medicine Humans Radiology Nuclear Medicine and imaging Prospective Studies education End-systolic volume Observer Variation education.field_of_study Reproducibility Ejection fraction business.industry Reproducibility of Results Stroke Volume Data set medicine.anatomical_structure Ventricle Evaluation Studies as Topic Coronal plane Ventricular Function Right End-diastolic volume Female Radiology Cardiology and Cardiovascular Medicine business |
| Zdroj: | Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography. 28(10) |
| ISSN: | 1097-6795 |
| Popis: | Background Echocardiographic assessment of the right ventricle is difficult because of its complex shape. Three-dimensional echocardiographic (3DE) imaging allows more accurate and reproducible analysis of the right ventricle than two-dimensional methodology. However, three-dimensional volumetric analysis has been hampered by difficulties obtaining consistently high-quality coronal views, required by the existing software packages. The aim of this study was to test a new approach for volumetric analysis without coronal views by using instead right ventricle–focused three-dimensional acquisition with multiple short-axis views extracted from the same data set. Methods Transthoracic 3DE and cardiovascular magnetic resonance (CMR) images were prospectively obtained on the same day in 147 patients with wide ranges of right ventricular (RV) size and function. RV volumes and ejection fraction were measured from 3DE images using the new software and compared with CMR reference values. Comparisons included linear regression and Bland-Altman analyses. Repeated measurements were performed to assess measurement variability. Results Sixteen patients were excluded because of suboptimal image quality (89% feasibility). RV volumes and ejection fraction obtained with the new 3DE technique were in good agreement with CMR (end-diastolic volume, r = 0.95; end-systolic volume, r = 0.96; ejection fraction, r = 0.83). Biases were, respectively, −6 ± 11%, 0 ± 15%, and −7 ± 17% of the mean measured values. In a subset of patients with suboptimal 3DE images, the new analysis resulted in significantly improved accuracy against CMR and reproducibility, compared with previously used coronal view–based techniques. The time required for the 3DE analysis was approximately 4 min. Conclusions The new software is fast, reproducible, and accurate compared with CMR over a wide range of RV size and function. Because right ventricle–focused 3DE acquisition is feasible in most patients, this approach may be applicable to a broader population of patients who can benefit from RV volumetric assessment. |
| Databáze: | OpenAIRE |
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