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

Unit 4 Assignment: The Complexity of Human Organs, Ask quYour organs are wo...

Ask quYour organs are wonderous things, each one with a different function vital to the homeostasis of your body. While it is easy for us to view a particular organ as a single ite

Explain about the ocular haemodynamics, Explain about the Ocular Haemodynam...

Explain about the Ocular Haemodynamics. The pressure in the ocular arteries can be measured by optical ophthalmodynamometer. The intraocular pressure is raised to the level tha

Test for starch, have any picture this expiriment at record?

have any picture this expiriment at record?

Vagina, what is vagina explain with diagram

what is vagina explain with diagram

Foods incriminated, Foods that are frequently incriminated in staphylococca...

Foods that are frequently incriminated in staphylococcal food poisoning include meat and meat products, poultry and egg products, egg, tuna, chicken, potato and macaroni, bakery pr

Define protein requirements for physical fitness, Define Protein Requiremen...

Define Protein Requirements for physical fitness? Proteins provide energy to the body. Since exercise may increase an athlete's need for protein, depending on the type and freq

Remove the crown for reuse-endodontics principles, Remove the crown for reu...

Remove the crown for reuse - If the decision is made to remove the crown for reuse - The visibility is increased - Allowing for much easier removal of canal obstructions -

Explain the alterations occurring in meat and poultry, Alterations occurrin...

Alterations occurring in meat and poultry Meat, as you already know, is  rich in proteins and contains most of the essential amino acids.  It is also rich in minerals such as c

Determine the food source for phosphorus, Determine the Food Source for Pho...

Determine the Food Source for Phosphorus? Phosphorus is widely distributed in food. Food phosphorus is a mixture of both organic and inorganic forms although the relative amoun

Explain digestion and of digestive system of platyhelminthes, Q What are th...

Q What are the kinds of digestion and of digestive system of platyhelminthes? Flatworms have incomplete digestive systems and they present intracellular and extracellular compl

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