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

Name the classes into which the phylum arthropoda is divided, What are the ...

What are the classes into which the phylum Arthropoda is divided? What are the three main ones and some of their representative species? The three major classes of arthropods a

Control and informative function of organic molecules, Q. What are the few ...

Q. What are the few examples of the control and informative function of organic molecules? Based on genetic information, organic molecules control the entire work of the cell. D

Obtaining blood cultures, • Blood cultures are critical in the diagnosis an...

• Blood cultures are critical in the diagnosis and management of IE. • Obtain blood cultures before starting antimicrobial therapy whenever possible. • Intravascular infection l

What is an effect of increased temperature, What is the effect of increased...

What is the effect of increased temperature on a non enzyme catalyzed reaction? What are the effects of increased temperature on an enzyme catalyzed reaction?

What is contact plate method - food microbiology, What is Contact Plate Met...

What is Contact Plate Method? Contact Plate (RODAC - Replicate Organism Direct Agar Contact) Method - Contact plates are special petri plates containing suitable agar media wit

Nomenclature, who proposed the trinominal nomenclature

who proposed the trinominal nomenclature

Gorgonids, Gorgonids yield chemicals like prostaglandins, medically useful ...

Gorgonids yield chemicals like prostaglandins, medically useful for birth control, prevention of peptic ulcers, treatment of asthma, regulation of blood pressure, etc. Sponges are

What are the epithelial tissues, Q. What are the epithelial tissues? What i...

Q. What are the epithelial tissues? What is their general function and how is that function associated to the features of the tissue? Epithelial tissues also called as epitheli

Leucosolenia, characteristics of leucosolenia?

characteristics of leucosolenia?

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