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aggotfay aggotfay
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7 years ago
How does the size of the ultrasound head affect the intensity of an ultrasound intervention?
 
  What will be an ideal response?
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nic
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7 years ago
A smaller US head will decrease the effective radiating area (ERA) so at any given power the ultrasound intensity will be increased since it is being distributed over a smaller area (i.e., 10 watts delivered from a sound head with a 10 cm2 ERA creates an intensity of 1 W/cm2; the same wattage distributed over an ERA of 5 cm2 creates an intensity of
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