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

Duck septicemia (duck pasteurellosis/new duck disease), D uck septicemia (...

D uck septicemia (duck pasteurellosis/new duck disease) The disease is caused by Pasteruella anatipestifer (Syn. Riemerella anatipestifer ) that mostly affects growing duck

Explain the steps for injecting insulin injection, Explain the Steps for In...

Explain the Steps for Injecting Insulin Injection It is important to teach patient to take injections at regular times, 30 to 60 minutes before meals. Take insulin everyday, ev

Transport of substances done across the bryophyte tissues, Q. How is the tr...

Q. How is the transport of substances done across the bryophyte tissues? How is this feature related to the general size of these plants? In bryophytes there are no nutrient-co

The androecium in a flower of china rose, The technical term used for the a...

The technical term used for the androecium in a flower of China rose (Hibiscus rosasinensis) is: 1. Monadelphous 2. Diadelphous 3. Polyandrous 4. Polyadelphous

Define about aliphatic alcohols - non glyceride fractions, Define about Ali...

Define about Aliphatic alcohols - Non Glyceride Fractions? These are water-insoluble, with their content varying from 0.5-7% of the unsaponifiable matter. Rice bran oil contain

Lymphatic obstruction leading to heart failure?, A 62 year old white male d...

A 62 year old white male develops pitting edema of both feet. Put on Lasix and metoprolol. Develops hallucinations and confusion. Tapered off. Dies 3 weeks later of lymphatic o

Protozoa, What is meant by encystment

What is meant by encystment

State the term- hue, State the term- Hue Hue  is the dominant spectral ...

State the term- Hue Hue  is the dominant spectral colour (rainbow) and is related to the wavelength of light. In Munsell system there are five principal hues; red (R), yellow (

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