Which procedure involves the use of harmless sound waves to create images of internal body structures?

The procedure that involves the use of harmless sound waves to create images of internal body structures is ultrasound imaging. This technique employs high-frequency sound waves that bounce off tissues and organs, allowing for real-time imaging without the need for any ionizing radiation.

Ultrasound is particularly useful in various medical contexts, such as examining the heart, observing fetal development during pregnancy, and assessing abdominal organs. The resulting images can be used for diagnosis and monitoring of medical conditions. This technology’s non-invasive nature and safety make it an essential tool in medical diagnostics.