Left ventricular volumes assessed by different new three-dimensional echocardiographic methods and ordinary biplane technique.

摘要: Three-dimensional (3D) echocardiography may overcome the problems with inadequate accuracy and reproducibility of 2D volume measurements left ventricle. Aims: To establish in vitro two new methods for 3D echocardiographic determination as compared to biplane measurements. Methods: Validation by a multiplane method was performed on asymmetric latex phantoms (n=8, true volumes 45-304 ml) using rotational acquisition 90 image planes. Porcine agarose-filled asymmetrical ventricles (n=7, 34 – 280 were measured same based images acquired probe rotation axis perpendicular (A) parallel (B) ventricular long axis. Ventricular also obtained simplified system only three standard apical views (C) ordinary Simpson’s (D). Results: On systematic deviation from less than 2%, 95% variability individual this mean ± 4,9%. For ventricles, bias small all (<5%), but ±9,0%, 15.4%, 18.8% 41.3% A-D respectively. Corresponding results range inter- intraobserver variability. Conclusion: Individual estimates are similar quality or triplane echocardiography. Both superior method, inferior directed