What is the primary use of echocardiography?

The primary use of echocardiography is to visualize heart structures. This non-invasive imaging technique employs ultrasound waves to create real-time pictures of the heart's size, shape, and movement. Echocardiography provides valuable information about the function of heart valves, the heart chambers, and the overall heart muscle condition. It is instrumental in diagnosing various cardiovascular conditions, such as heart disease, valve disorders, and congenital heart defects.

The other options do not reflect the primary purpose of echocardiography. Measuring blood pressure is typically done using a sphygmomanometer, lung function evaluation involves techniques such as spirometry, and detecting high cholesterol levels usually requires blood tests. Therefore, while these options are important aspects of cardiovascular health, they do not pertain to the specific role of echocardiography in clinical practice.