An ultrasound

A) uses x-ray photography to make a picture of the unborn child.
B) can be heard by the human ear.
C) yields a picture called a CT-scan.
D) bounces sound waves off of the fetus.

Ultrasound

A medical imaging technique that uses high-frequency sound waves to produce images of structures within the body, commonly used during pregnancy.

CT-Scan

A medical imaging technique using computer-processed combinations of X-ray measurements taken from different angles to create cross-sectional images of the body.

X-Ray Photography

A technique that uses X-rays to view the internal structure of objects, commonly used in medicine to observe bones and organs.