SATURN STILLS / SCIENCE PHOTO LIBRARY SATURN STILLS / SCIENCE PHOTO LIBRARY
Ultrasound in pregnancy. Close-up of an ultrasound transducer being used to scan the abdomen of a pregnant woman. The transducer emits high-frequency sound waves and detects the reflected echoes. The results show the unborn child developing in its mother's uterus. This safe, and non-invasive procedure is used routinely in pregnancy to assess the growth of the developing foetus, and to detect any abnormalities.
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