What is the primary goal when applying the Simpson's method in echocardiography?

The primary goal of applying Simpson's method in echocardiography is to estimate the left ventricular ejection fraction accurately. Simpson's method, particularly the Simpson's biplane approach, involves tracing the endocardial borders of the left ventricle in both apical four-chamber and apical two-chamber views. This process creates a 3D representation of the left ventricle's geometry, allowing for a more precise calculation of its volume during diastole and systole. By obtaining these volume measurements, the ejection fraction can be computed, which is a crucial indicator of cardiac function and helps assess conditions such as heart failure and other cardiac diseases.

The focus of Simpson's method is specifically on volume calculation and the assessment of how well the heart is pumping blood, making it an essential tool in evaluating cardiac performance. Other options, while relevant to cardiac assessment, do not directly align with the intended purpose of Simpson's method. For instance, determining wall motion is an important aspect of echocardiographic assessments but is not the main goal of this technique. Similarly, measuring blood flow velocity and interventricular septal thickness pertain to different aspects of echocardiographic analysis and do not focus on ejection fraction calculations.