
In medicine, the use of ultrasonic pressure waves to create a diagnostic image. It is a safe, noninvasive technique that often eliminates the need for exploratory surgery. The sound waves...
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http://www.encyclo.co.uk/local/20688

This is a technique used routinely in most hospitals to monitor the growth and development of the baby before birth. Scans before 16 weeks are useful for dating the pregnancy (and are able to detect some major fetal anomalies). Detailed scanning at 18 to 21 weeks checks for a range of fetal anomalies.
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https://www.arc-uk.org/tests-explained/glossary-of-terms

an imaging procedure used to examine internal organs in which high-frequency sound waves are passed into the body, reflected back, and used to build an image; also sometimes called sonography
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https://www.encyclo.co.uk/local/20875

In medicine, the use of ultrasonic pressure waves to create a diagnostic image. It is a safe, noninvasive technique that often eliminates the need for exploratory surgery. The sound waves transmitted through the body are absorbed and reflected to different degrees by different body tissues
Found on
https://www.encyclo.co.uk/local/21221
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