ULTRASOUND

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  • Created by: rebecccab
  • Created on: 17-05-16 12:43
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  • Ultrasound
    • soundwaves
      • high frequency = 20 kHZ
      • frequency overall = 2M - 20 MHZ
    • sound/piezo crystal is in a box called a transducer
    • ultrasound reflects when density changes
      • the gel has the same density as skin
        • so that it can stop reflections before the ultrasound reaches the womb
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