What is the purpose of a sonogram?

A sonogram, also known as an ultrasound, primarily serves the purpose of visualizing internal structures within the body. It uses high-frequency sound waves to create images of organs and tissues, enabling healthcare providers to assess various conditions, monitor fetal development in pregnancy, or examine areas such as the abdomen or pelvis for abnormalities. This non-invasive imaging technique plays a crucial role in diagnostic medicine because it helps in identifying issues such as cysts, tumors, or other structural problems.

While other options represent important medical procedures—like assessing blood flow or monitoring heart activity—those functions typically necessitate different types of diagnostic tools or technologies. For instance, Doppler ultrasound is utilized specifically to assess blood flow, and an electrocardiogram is used to monitor heart activity. Additionally, a biopsy would involve collecting tissue samples for examination under a microscope, which is distinct from the imaging capabilities of a sonogram. Therefore, the primary function of a sonogram is indeed to assess internal structures, making it a vital tool in medical diagnostics.