1054-2 EchoVIEW: Simultaneous Echocardiographic and Physiologic Data Collection and Analysis Software

Abstract

The EchoVIEW software package has been developed for the acquisition and analysis of simultaneous echocardiographic and physiologic data on both Macintosh and PC platforms using LabVIEW (National Instruments, TX). This graphical programming environment allows for data visualization and analysis using a variety of modules, called virtual instruments (VIs). The data acquisition VI allows for real-time visualization, digitization, and storage of eight physiologic waveforms. Available inputs signals include fluid-filled or high-fidelity micromanometer pressures, surface or atrial electrocardiograms, and area or volume from acoustic quantification. Acquisition variables including signal sources, amplification parameters, and sampling frequency are user selectable. EchoVIEW's physiologic data processing VIs include automated analysis of pressure waveforms (relaxation rate and dp/dt), transvalvular gradients (instantaneous, peak, and mean pressures), and on-line reconstruction of pressure-volume loops. Doppler echocardiographic analysis VIs have also been developed using a LabVIEW image processing (IP) library called Concert V.i (Graftek Imaging, France).Download : Download high-res image (86KB)Download : Download full-size image EchoVIEW's IP VI's include digital image readers, filtering routines, and velocity profile extraction from pulsed, continuous, and color Doppler images. The package is currently used in research and clinical environments to investigate diastolic function, left atrial appendage electrical/mechanical function, and transvalvular catheter and Doppler gradient measurements. The software package has proven to be an essential tool in studying complex cardiovascular problems where simultaneous acquisition and analysis of hemodynamic, electrophysiologic, and echocardiographic information are important.