<human>:  Where is Intravascular ultrasound performed?
<bot>: Intravascular ultrasound is performed in a hospital. It is a procedure that uses sound waves to create images of the inside of the body. The sound waves are transmitted through a catheter that is inserted into a blood vessel. The sound waves are then reflected off of the walls of the blood vessels and are recorded by a device called a transducer. The transducer converts the sound waves into images that can be viewed on a monitor.