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Ultrasound for clinical purposes: The history
- Ultrasound was first used for clinical purposes in 1956 in Glasgow.
- Obstetrician Ian Donald and engineer Tom Brown developed the first prototype systems based on an instrument used to detect industrial flaws in ships.
- They perfected its clinical use, and by the end of the 1950s, ultrasound was routinely used in Glasgow hospitals..
- It really took off in British hospitals in the 1970s, and it was well into the 1970s before it became widely used in American hospitals.
- By the end of the 20th century, ultrasound imaging had become routine in maternity clinics throughout the developed world.
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How the ultrasound works
- Ultrasound imaging involves bouncing "ultrasonic" sound waves at body structures or tissues, and detecting the echoes that bounce back.
- Obstetric ultrasonography is used to image a human fetus inside its mother's womb.
- Based on the angle of the beam, and the time it takes for echoes to return, an image of body structures inside the fetus can be generated.
- It's used to confirm a pregnancy, to identify the sex and number of fetuses and to detect fetal abnormalities such as microcephaly, absence of kidneys, and spinal problems.
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