Phase space analysis of myocardial coordination related to left ventricular ejection fraction by echocardiographic speckle-tracking radial strain
| Autor: | Hsiao-Lung Chan, Pei-Kuang Chao, Chun-Li Wang |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Male
Percentile medicine.medical_specialty Bundle-Branch Block Biomedical Engineering Biophysics Ventricular Function Left Speckle pattern Disease severity Internal medicine medicine Image Processing Computer-Assisted Humans cardiovascular diseases Mathematics Aged Ejection fraction Left bundle branch block Myocardium Stroke Volume Stroke volume Middle Aged medicine.disease Echocardiography Phase space cardiovascular system Cardiology Female Radial stress Biomedical engineering |
| Zdroj: | Medical engineeringphysics. 34(1) |
| ISSN: | 1873-4030 |
| Popis: | Phase space reconstruction, which is performed by converting echocardiogram-derived strain data from different ventricular regions into phase space trajectories, is applied in this study to describe nonlinear behaviour of myocardial coordination. A new method was developed to quantify patterns of phase space trajectories. Echocardiograms of 31 healthy individuals and 63 patients with left bundle branch block (LBBB) and different left ventricular ejection fractions (LVEFs) were used to evaluate this method. The LBBB patients were separated into two groups: LBBB with a LVEF≥50% and LBBB with a LVEF |
| Databáze: | OpenAIRE |
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