Dictionary of Cancer Terms
View in Spanish: EGIO
IOUS
A procedure that uses ultrasound (high-energy sound waves that are bounced off internal tissues and organs) during surgery. Sonograms (pictures made by ultrasound) of the inside of the body are viewed on a computer to help a surgeon find tumors or other problems during the operation. Also called intraoperative ultrasound.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.