human
My doctor has ordered an ultrasound on my thyroid gland. What is an ultrasound?
assistant
An ultrasound is a diagnostic medical test that uses sound waves to produce images of the inside of the body. It can be used to visualize organs and structures, such as the thyroid gland, which are not visible to the naked eye. Ultrasounds are often used to diagnose conditions like thyroid nodules, cysts, or enlarged lymph nodes.