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

Which term explain lack of voluntary control of urination, In studies of hu...

In studies of human body, which of the following terms will be used to explain the lack of voluntary control of urination or voiding of bladder? Is it a) Anuria b) Incontine

Neurological and neurovascular observations, what is the difference between...

what is the difference between neurological and neurovascular observations

Which are intracellular organelles present in bacteria, Q. Which are intrac...

Q. Which are intracellular organelles present in bacteria? Considering typical eukaryotic cell organelles heterotrophic bacteria have ribosomes essential for protein synthesis.

Discuss about brain, Brain Brain is a part of central nervous system wh...

Brain Brain is a part of central nervous system which lies in the skull. Source: Sears and Windwood, Anatomy and Physiology for Nurses The different parts of the bra

Tanco beans plant, what are the origin, morphology, active constituents, us...

what are the origin, morphology, active constituents, uses and market preparation of tanco beans ?

Show the characteristics of honey, Honey comes under the purview of Prevent...

Honey comes under the purview of Prevention of Food Adulteration Act (PFA). Due to its limited production and high cost, honey is prone to adulteration by cane sugar, invert sy

Principle for presence of vanaspati and rancidity in ghee, Principle for Pr...

Principle for Presence of Vanaspati and Rancidity in Ghee Cheap edible and nonedible oils like argemone oil, white oil, tea seed oil etc. are used as adulterants in more expens

What should we focus on during pregnancy, What should we focus on During pr...

What should we focus on During pregnancy? Our focus should be strongly on the preventive aspects of nutrition, identify women at-risk, recognize special needs for counseling, a

What is the function of the iris and of the pupil, What is the function of ...

What is the function of the iris and of the pupil? The iris works like the diaphragm of a photographic camera as it has muscles that contract or relax varying the pupil diamete

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