Answer:
The correct answer is - Changing PRF.
Explanation:
Pulsed wave Doppler uses the principle of Doppler effect that objects that move changes the characteristic of sound waves. It is creates images by sending the short and quick pulses of the sound, it helps in the determining the velocity of blood in a exact time and location.
PRF or pulse repetition frequencies, is a Doppler sampling frequency that can affect the acoustic exposure of the scanning. PRF is measured in KHz.
Thus, the correct answer is - changing PRF.
Question's pretty vague, although I recommend a name that's brief and easily recognizable as well as something that relates to the purpose. So if someone sees it, they can easily remember and identify what it is exactly.
White blood cells are an important component of your blood system, which is also made up of red blood cells, platelets, and plasma.
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Although your white blood cells account for only about 1% of your blood, their impact is significant. White blood cells, also called leukocytes, are essential for good health and protection against illness and disease.
Health? maybe. is this a multiple choice question
