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

Central carbons participate in the peptide bond, Q. Do the -H groups bound ...

Q. Do the -H groups bound to the central carbons participate in the peptide bond? The central carbons themselves, the -R groups and the hydrogen attached to the central carbons

Green leaves give off oxygen in sunlight, Green leaves give off oxygen in s...

Green leaves give off oxygen in sunlight Place some water weed under a funnel in a beaker of water reverse a test tube full of water over the tube of the funnel. Leave the appa

What concerns should alek''s healthcare, Nine-year-old Alek is admitted to ...

Nine-year-old Alek is admitted to the emergency room with a closed fracture of the right femur. Radiography revels that the fracture crosses the distal epiphyseal plate. What conce

Digestive system, which enzymes are required for digestion in cockroach?

which enzymes are required for digestion in cockroach?

Enumerate the sizes of eukaryotic and prokaryotic cells, Enumerate the Siz...

Enumerate the Sizes and shapes of eukaryotic and prokaryotic cells It is thus possible, due to these similarities, to generalise about the structures and functions of cells. In

What characteristics distinguish fungi from plants, What characteristics di...

What characteristics distinguish fungi from plants? Fungi contain some unicellular forms, but plants do not; most plants are autotrophic, but all fungi are heterotrophic. Fungi

What do you mean by tubular secretion, Q. What is tubular secretion? What a...

Q. What is tubular secretion? What are some examples of substances secreted through the renal tubules? Uric acid, Ammonia, potassium bicarbonate and hydrogen ions, bases and me

Local control mechanism within the circulatory system, Which of the followi...

Which of the following is true for active hyperemia, a local control mechanism within the circulatory system? A. There will be an increase in force developed by smooth muscles

Define japanese criteria for functional foods, Define Japanese criteria for...

Define Japanese criteria for functional foods? The Japanese criteria for functional foods include: They are food (not capsules, pills/powder) on the basis of naturally o

Which type of plant tissue is cork, Which type of plant tissue is cork? ...

Which type of plant tissue is cork? Cork, the material, for example, used to cap wine bottles, is extracted from the suber of a special oak known as cork oak.

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