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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.
Compared to amphibians what are the two reproductive novelties of beings of the class Reptilia for the survival in dry environments? Compared to amphibians the two major reprod
name two examples of biotechnology that use recombinant DNA technology and two examples that do nnot
What is the law of limiting factors? How would the rate of photosynthesis be affected if the soil water becomes limiting? Describe.
Carbon dioxide needed for photosynthesis enters the leaf via the stomata but water is also lost when these pores are open. Water is often limiting and to limit water loss through s
How many cells are in the average human brain? Roughly, 6 trillion are in the average human brain.
Explain about Adhesive tape of many varieties Adhesive tape of many varieties with backing materials coated with an adhesive to keep the dressing in place. The adhesive bandage
Use of Beta-blockers : In some centres, patients are routinely put on beta-blockers after CABG. European coronary artery surgery study showed that only 25 per cent of patient
define fringing reef
Two chromosomes in a cell have identical length and centromere position yet are not homologous, what is different about them.
Determine the term - neuropsychological screening examination A neuropsychological screening examination is a considerably abbreviated version of a full neuropsychological ass
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