Ultrasound In Pregnancy
(also known as 'sonograms' or 'scans') can be performed for a variety of reasons. Medical ultrasounds in pregnancy work on the same principle as sonar (used in oceanography to map the sea bed). The technician uses a hand-held ultrasound probe (or 'transducer') to generate and receive high frequency sound waves that cannot be heard by the human ear. Hundreds of sound waves are emitted from the transducer during each scan. These waves are
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