In which area is sonography commonly applied?

Sonography is commonly applied in cardiac evaluations because it allows for the non-invasive assessment of the heart's structure and function. One of the primary modalities used is echocardiography, which employs ultrasound waves to produce real-time images of the heart. This technique can help in diagnosing various cardiac conditions, including valvular heart disease, congenital heart defects, and heart failure by visualizing the heart’s chambers, valves, and blood flow dynamics.

The application of sonography in this field is pivotal for guiding treatment decisions and monitoring patients' conditions over time. With its ability to provide detailed images and information about the heart's anatomy and performance without the need for ionizing radiation, sonography stands out as a vital tool in pediatric and adult cardiology.

In contrast, while sonography may have some applications in pediatric imaging, the core focus on cardiac evaluations highlights its critical role in assessing heart health. Radiotherapy planning typically involves imaging techniques like CT or MRI rather than ultrasound, and electrophysiology studies concentrate on the electrical activity of the heart using different modalities than sonography.