How Does an Abdominal Ultrasound Work?

Ultrasound equipment is high tech medical machinery that is used to detect and help diagnose conditions or discover the source of pain and discomfort due to injury. An abdominal ultrasound may be used to search the organs and tissues. This tool is also effective for navigating the abdominal area to direct a needle or instrument for a biopsy. Unlike an X-ray, an ultrasound is able to capture movement appearing in real-time.

The abdominal ultrasound procedures are performed by highly trained specialists such as radiologists and sonographers. A clear gel is rubbed on the abdomen (allowing the equipment to glide across the abdomen). The transducer (or probe) scans the abdominal area. When electric pulses are produced, sound waves are reflected and returned to the computer (or analyzer), that creates the data and images.The images are understood and read by the medical professionals.

Preparing for the procedure will allow the radiologist or sonographer to get a clear picture of the area. A patient undergoing the procedure will likely need to fast for a time (at least eight hours) prior to the procedure. This ensures that the stomach is empty and the intestines and bowels are inactive. Fasting also allows for a better view of the gall bladder, as it contracts after eating and may be difficult to see when the stomach is full. For more information see the "Resources" section.

Resources

• More on Ultrasounds