What is a stomach sonogram? What is it used for? When was it invented?
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A sonogram, also known as an ultrasound, is a computerized picture taken by bouncing sound waves off organs and other interior body parts. A wand called a transducer is glided along the outside of the body over a centralized area or organ. As it glides, it introduces sound waves into the body. These sound waves bounce off the intended area and back into the transducer, which feeds the information into a computer. The picture then appears on a special computer screen. The sonogram is most often used to monitor a pregnancy. Ultrasound was invented by the English physician Ian Donald in 1957
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