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

Nutrition, what is the mode of nutrition in tape worm

what is the mode of nutrition in tape worm

Define chain and ring forms and anomerism, Define Chain and Ring forms and ...

Define Chain and Ring forms and anomerism? Many simple sugars can exist in a chain form or a ring form. The ring form is favoured in aqueous solutions, and the mechanism of rin

Define the interaction of vitamin c with lead and mercury, Define the inter...

Define the interaction of vitamin c with lead and mercury? Vitamin C, lead and mercury: Iron alleviates lead toxicity but ascorbic acid is ineffective. Ascorbic acid alleviat

Define the word colloid and Crystalloids, Define the word colloid The w...

Define the word colloid The word colloid, you may be interested to know, is derived from the Greek word "kolla" meaning "glue" and is defined as a system containing particles o

What food items include in clear liquid diet, What Food items include in cl...

What Food items include in clear liquid diet -  Clear, fat free soups/broths -  Light coffee, tea (without milk or cream) -  Strained fruit juices -  Tender coconut wa

Air pollution, It is defined as the presence of chemicals and particulate i...

It is defined as the presence of chemicals and particulate in the atmosphere in quantities and pollution that are harmful to human health and environment. It occurs when the concen

Explain about the food spoilage, Explain about the Food Spoilage? Foods...

Explain about the Food Spoilage? Foods gradually undergo deterioration or spoilage from the time they are harvested, caught, slaughtered or manufactured. Therefore, delay in th

Importance of mitosis, Equal Distribution of Hereditary Material: In mit...

Equal Distribution of Hereditary Material: In mitosis the heredity material is equally distributed in the daughter cell. 2.No Change in Genetic Information: As there is no

Estimate the frequencies of the d and d alleles, The Basque people, who liv...

The Basque people, who lived in the Pyrenees Mountains between France and Spain, have one of the highest frequencies of the d allele in the Rh system so far reported. In one study

What are the main human degenerative diseases, What are the main human dege...

What are the main human degenerative diseases? The main human degenerative diseases are separated into three groups: cardiovascular diseases, neoplastic diseases and degenerat

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