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.
C) Nothing in this world is limited. Especially your knowledge. You can teach an old dog knew tricks. Hope this helps
I agree. You can say stress causes the release of stress hormones such as epinephrine or norepinephrine which increase your heart rate, blood pressure, and blood sugar levels. The rise in these may speed up the tumour growth and more likely to metastasize. Furthermore, a person under stress may develop certain behaviours such as drinking alcohol, smoking, overeating leading to obesity. These behaviours contribute towards the increase of your HR, BP as well.
