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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.
Question 1 Explain various methods employed for the lab diagnosis of rabies Definition of rabies Listing of various methods employed for rabies Explaining the meth
Who was Charles Darwin? The Charles Darwin was an English naturalist born in 1809 and considered the father of the theory of evolution. By the end of the year 1831, before turn
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Explain about the Anti Obesity Drugs? The anti-obesity drugs can be classified into two broad groups as indicated in the Figure. Drugs must be taken only under Doctor's
Q. What is the main nitrogen waste of humans? Human beings excrete largely urea eliminated with the urine.
Medication delivered in the form of a pill contains an active ingredient or ingredients. Beside the drug itself, the pill also contains "fillers". The filler has several functions.
KARYOTHEC A OR NUCLEAR MEMBRANE It is also called Nucleolemma, term given by Erclab & Hertwig. Karyotheca composed of two unit membranes separated by a 150-300 A° wide p
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Variation exhibited in shared traits present in a population is due to alleles of the shared genes. can be influenced by interactions of alleles of multiple genes. Can be influence
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