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 associated procedure of reinforcement of patch, Explain the Ass...

Explain the Associated procedure of Reinforcement of Patch? Associated Procedures :  Coronary artery bypass grafting and repair of mitral valve are also carried out. P

Describe the examination of abdomen, Describe the Examination of Abdomen ? ...

Describe the Examination of Abdomen ? The contour of abdomen is to be recorded. Normally the abdomen is scaphold in sharp in a young adult. In case of fullness and bulge presen

Illustrate physiological evidence, Q. Illustrate Physiological Evidence ? ...

Q. Illustrate Physiological Evidence ? Physiological and biochemical evidence is providing data of increasing importance to plant systematic. Recently, it has become apparent t

Illustrate temporal digital subtraction radiography, Q. Illustrate Temporal...

Q. Illustrate Temporal digital subtraction radiography? Temporal digital subtraction radiography (SR) is a radiographic technique that enable two radiographs made at different

Electron transport chain, ELECTRON TRANSPORT CHAIN All processes requir...

ELECTRON TRANSPORT CHAIN All processes require energy. In living cells, we constantly use energy for a number of biochemical reactions e.g. muscular movements, synthesis  of ne

Explain nicotinic acid, Nicotinic acid (Niacin) Niacin refers to both n...

Nicotinic acid (Niacin) Niacin refers to both nicotinic acid and its amide derivative. Nicotinic acid occurs as white or almost white crystals or as a crystalline powder of the

What is the drug permeability across the cornea, What is the drug permeabil...

What is the drug permeability across the cornea? Drug permeability across the cornea depends onto: a. Lipid and water solubility of the drug b. Molecular size, weight and

Enumerate the term - brain behaviour functioning, Enumerate the term - brai...

Enumerate the term - brain behaviour functioning The brain may be thought of as a "dependant variable" that is shaped in part by the facilitative stimulation that is experience

Manx cats are heterozygous for a dominant mutation, Manx cats are heterozyg...

Manx cats are heterozygous for a dominant mutation that results in no tails or very short tails, large hind legs and a distinctive gait. The mating of two Manx cats yields two Manx

Explain lyme disease, Explain Lyme disease The disease - About 70-80% o...

Explain Lyme disease The disease - About 70-80% of patients infected by B. burgdorferi develop the characteristic skin lesion, erythema migrans, which occurs at the site of the

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