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

The eye refract the light, Which parts of the eye refract ('bend') the ligh...

Which parts of the eye refract ('bend') the light in such a way as to form an image on the retina?   The curved surface of the cornea, and the aqueous humour enclosed by it,

Determine st-segment elevation, Q. Determine ST-Segment Elevation? Ans...

Q. Determine ST-Segment Elevation? Ans. Exercise induced ST-segment elevation is common in subjects with post MI stress tests in leads where Q-waves are present. It has be

Factors affecting water requirements of microorganisms, Q. Factors Affectin...

Q. Factors Affecting Water requirements of microorganisms? Factors that may affect aw requirements of microorganisms include: 1. Kind of solute employed to reduce the aw: F

Explain the sodium-glucose co-transporter, Which of the following is true f...

Which of the following is true for the sodium-glucose co-transporter? A. The net flux of sodium ions is from a region of high sodium ion concentration to a region of low sodium

Define other sex determination systems, Besides the XY system are there oth...

Besides the XY system are there other sex determination systems? A few animals have a sex determination system different from the XY system such as the X0 system is the sex det

Lysosomes, explain polymorphism in lysosomes

explain polymorphism in lysosomes

Define food components other than essential nutrients, Define Food Componen...

Define Food Components Other Than Essential Nutrients? In the previous units so far, we have read about the six major nutrients, which are essential for us. Though these vary i

Professional guidance in diabetes mellitus, Counselling refers to professi...

Counselling refers to professional guidance in resolving personal conflicts and emotional problems. Counselling is a process which enables a person to identify problems and find a

Dilute this concentration of cells to yield 300 cells, For a particular ass...

For a particular assay, you require cells at a concentration of 300 cells per ml. In your flask of cells growing you counted a sample using a hemacytometer and found that you have

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