Ultrasonic diagnostic imaging typically employs a frequency range

Ultrasonic diagnostic imaging typically employs a frequency range
| Ultrasonic diagnostic imaging typically employs a frequency range from

A. 1 kHz to 15 kHz

B. 1 MHz to 15 MHz

C. 1 Hz to 100 Hz

D. 1 GHz to 15 GHz

Please scroll down to see the correct answer and solution guide.

Right Answer is: B

SOLUTION

  • Ultrasound frequencies in a diagnostic range from 1 MHz to 18 MHz.
  • Higher frequencies have shorter wavelengths and are absorbed or attenuated more easily. Therefore the high-frequency signals are not that penetrating.
  • This explains why high frequency is used for the superficial body structures & low frequency is used for those that are deeper.

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