Multiple choice

In sonography, wavelength of ultrasound used is

  1. 20,000 Hz/sec

  2. 40-50 kHz/sec

  3. 1-15 MHz

  4. 1500-2000 MHz
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Medical ultrasound imaging uses frequencies in the megahertz range, typically 1-15 MHz. Higher frequencies provide better resolution but less tissue penetration. Options A and B have incorrect units and are too low, while D is too high for diagnostic imaging.

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