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

Hypomagnesaemic tetany , Hypomagnesaemic tetany (grass tetany, grass stagge...

Hypomagnesaemic tetany (grass tetany, grass staggers, lactation tetany) Hypomagnesaemic tetany is a multifactorial complex metabolic disorder, which is  characterized by reduct

Explain esterification, Explain Esterification The process of convertin...

Explain Esterification The process of converting an acid into an alkyl or aryl derivative. Most frequently the process consists of the reaction of an acid with an alcohol in th

What are protozoans? explain their functions, Protozoans are microscopic in...

Protozoans are microscopic in size however some are large enough to be seen with naked eye. Microscopic organisms such as these have numerous advantages, one of which is that they

Sql''s fifth concept - null, SQL's Fifth Concept - NULL Unfortunately...

SQL's Fifth Concept - NULL Unfortunately, SQL embraces a fifth concept, called NULL, an apparently simple little thing but one that has pervasive effects on our usual underst

Proximal end of his right femur, In Reggie's case, he fractured the proxima...

In Reggie's case, he fractured the proximal end of his right femur, an integral component of his hip. Name the joint disorders that Reggie is more a risk of in (a) the short term a

Evaluation of nursing process, Evaluation This is the last step in nur...

Evaluation This is the last step in nursing process. Throughout care, you constantly evaluate the progress the client has made towards reaching the pre-established goals/ ob

Causes of variation, CAUSE S OF VARIATION - Effect of environmental co...

CAUSE S OF VARIATION - Effect of environmental conditions Change in the gene pattern like - (a) Random distribution of homologous genes in meiosis (b) Crossing over

What is genesis of coronary artery diseases, What is genesis of coronary ar...

What is genesis of coronary artery diseases ? Like any other disease conditions, origin of CAD depends on an interplay between the heredity and environment so called 'nature' a

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