Nyquist limit, Biology

Assignment Help:

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.

438_NYQUIST LIMIT.png


Related Discussions:- Nyquist limit

Differentiate between glycogenesis and glycogenolysis, Differentiate betwee...

Differentiate between glycogenesis and glycogenolysis. The synthesis  of glycogen in liver and muscle  is  called glycogenesis.  The breakdown of glycogen in the liver (glycoge

Explain the maltose and cellobiose, Explain the Maltose and Cellobiose? ...

Explain the Maltose and Cellobiose? Maltose consists of two a-D-glucose molecules with the alpha bond at carbon 1 of one molecule attached to the oxygen at carbon 4 of the se

What would be the probability the result, A plant grown from one of Mendel'...

A plant grown from one of Mendel's yellow pea is selfed. Three progeny peas from this are obtained and they are all green. Is the original plant homozygous or heterozygous, and wha

What is biological contaminants, Q. What is Biological Contaminants? Yo...

Q. What is Biological Contaminants? You may recall reading about food borne diseases caused by the consumption of contaminated food items in the last unit. In the

Which is the other adnexal gland of the digestive system, Besides the liver...

Besides the liver which is the other adnexal gland of the digestive system that releases substances in the duodenum participating in extracellular digestion? The other adnexal

Professional guidance in diabetes mellitus, Counselling refers to professi...

Counselling refers to professional guidance in resolving personal conflicts and emotional problems. Counselling is a process which enables a person to identify problems and find a

Explain about picaridin, Picaridin Laboratory and field studies docume...

Picaridin Laboratory and field studies documenting the efficacy of picaridin. No published data are available on the efficacy of the 7% solution now available in the US. Insec

Describe pulsus paradaxus pulse volume, Describe pulsus paradaxus pulse vol...

Describe pulsus paradaxus pulse volume? Pulsus Paradaxus: Pulse volume becomes smaller in inspiration and larger in expiration. This is an exaggeration of normally occurring ph

Diffrence between fish epidermis and amphibian epidermis, Q. How different ...

Q. How different is the fish epidermis from the amphibian epidermis? The fish epidermis is very contains and thin mucus-secreting cells the fish skin doesn't present keratin, t

What is the function of the skin in humans, What is the function of the ski...

What is the function of the skin in humans? The skin is the external covering of the body. In humans its major functions are protection, perception of information from the envi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd