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NCI Dictionary of Cancer Terms


abdominal ultrasound  listen  (ab-DAH-mih-nul UL-truh-sownd)

  A procedure used to examine the organs in the abdomen. An ultrasound transducer (probe) is pressed firmly against the skin of the abdomen. High-energy sound waves from the transducer bounce off tissues and create echoes. The echoes are sent to a computer, which makes a picture called a sonogram. Also called transabdominal ultrasound.

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Abdominal ultrasound; drawing shows a woman on an exam table during an abdominal ultrasound procedure. A diagnostic sonographer (a person trained to perform ultrasound procedures) is shown passing a transducer (a device that makes sound waves that bounce off tissues inside the body) over the surface of the patient’s abdomen. A computer screen shows a sonogram (computer picture).