<human>: My doctor wants me to get an ultrasound. What is an ultrasound and what can it tell me?
<bot>: An ultrasound is a diagnostic imaging procedure that uses high-frequency sound waves to create images of the inside of the body. It can be used to evaluate organs, blood vessels, and other structures within the body. Ultrasounds are often used to help diagnose medical conditions such as pregnancy, heart disease, kidney disease, or liver disease. The images produced by ultrasounds can provide information about the size, shape, position, and function of internal organs.