[Application of electrocardiac-gating in echocardiogram analysis]

Area of Science:

• Cardiology
• Medical Imaging
• Biomedical Engineering

Background:

• Echocardiography is a key tool for cardiac assessment.
• Accurate quantitative analysis of cardiac function is crucial for diagnosing heart diseases.
• Early detection of coronary heart disease and myocardial ischemia improves patient outcomes.

Purpose of the Study:

• To evaluate the application of electrocardiogram R-gating in 2D echocardiography.
• To assess the utility of this technique for quantitative analysis of cardiac function.
• To determine its effectiveness in diagnosing early coronary heart disease and myocardial ischemia.

Main Methods:

• Recruited thirty normal subjects and twenty-five patients with suspected heart disease.
• Employed electrocardiac R-gating for phased image acquisition.
• Utilized a man-to-computer interactive mode for image recognition, calculation, and delineation of cardiac structures.
• Measured quantitative parameters of cardiac function and left ventricular volume curves.

Main Results:

• The R-gating technique facilitated the collection of phasic echocardiographic images.
• Computer analysis, guided by user input, enabled quantitative assessment of cardiac parameters.
• The method provided valuable information for diagnosing cardiac conditions.

Conclusions:

• Electrocardiogram R-gating in 2D echocardiography is a viable technique for quantitative cardiac assessment.
• This method can provide crucial information for the localization of early coronary heart disease.
• The technique shows potential for diagnosing myocardial ischemia.