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The NYQUIST LIIMIT-It is a sampling phenomenon, which limits the maximum fiequemcy shift measurement to one half of the sampling frequency (PRF).
By its nature, pulse wave Doppler is a sampling system while continuous wave Doppler is not. The nyquist limit is a theoretical maximum frequency that a
If the frequency shift is higher than the Nyquist frequency, aliasing occurs; i.e., the Doppler spectrum is cut off the Nyquist frequency and the remaining frequency shift is recorded on the opposite side of baseline.
The PRF varies inversely with the depth of the sample volume the shallower the location of the sample volume, the higher the PRF and Nyquist frequency. In other words, higher velocities can be recorded without aliasing by pulse wave Doppler if the sample volume is closer to transducer.
Rh-factor It is one of the factor associated with blood. In addition to ‘A', ‘B', ‘AB' and ‘O' groups, Rh factor test is also done in the blood. People having Rh factor a
excretory organs of agama lizard
Discuss fatty acid with free radical The hydrogen is removed from the fatty acid chain to yield a free radical. The removal of hydrogen takes place at the carbon atom next to t
S a f e ty, ethical and welfare considerations Development of transgenic organisms is proceeding in an environment of intense public debate about safety, environmental impa
why brains can''t be transplant?
Q. Does the mitosis properly occur after or before the interphase? Is it a simple "point of view" issue? Mitosis have to be considered a succeeding phase after interphase since
What is meant when it is said that a virus is in an inactive state? Viruses considered in inactive state are those whose genetic material is within host cells without synthesis
Is heart patient can do exercise Advise the patient to consult the doctor before starting any exercise. Doctor will advise the patient to choose exercises as per his condition;
Steps of Research Process: Identify the Problem: The first task in the planning stage is to identify and stage the problem, as you have already learnt in the earlier
Pathophysiology of Acute Renal Failure It is usually reversible but the deviation of physiologic function can be extreme and mortality in pediatric age group remains high. Th
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