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

Explain the atp-sensitive potassium channel, ATP-sensitive potassium channe...

ATP-sensitive potassium channel?   A.  In smooth muscle cells surrounding an arteriole serving a region of the body that has just recently had very high levels of cellular acti

How to identify the monomer or molecular components, Please help with the f...

Please help with the following: For each of the four macromolecules carbs, lipids, proteins and nucleic acids, please identify the monomer or molecular components and name the b

What is the genetic disease in which this factor is absent, What is factor ...

What is factor VIII? What is the genetic disease in which this factor is absent? Factor VIII has the function of activating factor X that in its turn is essential for the trans

Define proteins required for underweight - nutritional care, Define Protein...

Define Proteins required for underweight - Nutritional Care? Proteins are required for tissue building, as well as, to take care of the daily wear and tear. Under weight indivi

Phylum protozoa, classification of organisms in phylum protozoa according t...

classification of organisms in phylum protozoa according to their class,order,family,genus,species.

Structure of the pancreas, Describe the structure of the pancreas. How is t...

Describe the structure of the pancreas. How is the pancreas modified to carry out its various functions? How does the human pancreas compare to that of the fetal pig?

Define flow phase in physiological response to injury, Define Flow Phase in...

Define Flow Phase in Physiological Response to injury? It is characterized by hyper metabolism, increased cardiac output, increased urinary nitrogen losses, altered glucose met

External features of human heart, External features of human heart H...

External features of human heart Human heart is a muscular, hollow organ situated slightly towards left side of the thorasic cavity. It is made up of special muscles call

Explain bacterial vaginosis, Bacterial vaginosis  The role of sexual tr...

Bacterial vaginosis  The role of sexual transmission is unclear in bacterial vaginosis, in which normal H2O2-producing Lactobacillus  species are replaced by overgrowth with  G

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