Ultrasound uses high-frequency sound waves to create still or video images of soft tissue areas of the body. To capture these images, an ultrasound gel is first applied to the skin over the area to be viewed. A hand-held instrument called a transducer is then moved slowly across your skin as an image appears on the ultrasound monitor.
Ultrasound procedures are painless and safe. Ultrasounds usually take less than 30 minutes to complete. Ultrasounds make it possible for the radiologists to diagnose many diseases and medical conditions without any exposure to radiation.
Preparing for an Ultrasound
If your abdomen or pelvic regions are to be examined, you may be asked not to eat or drink after midnight prior to the exam, or asked to report with a full bladder. Otherwise, there is no special preparation required before your ultrasound.