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

Important aspects of nutritional needs during emergency, Define important a...

Define important aspects of nutritional needs during emergency situations? This unit discussed important aspects of nutritional needs during emergency situations and under envi

Describe assist control ventilation, Describe Assist Control Ventilation (A...

Describe Assist Control Ventilation (ACV) The machine delivers a set tidal volume at the set rate; besides, each time the patient breathes on his own, a machine breath is init

What are the main cellular functions of potassium, What are the main cellul...

What are the main cellular functions of potassium? Besides being significant for the osmotic regulation and for the acid-base equilibrium (pH) potassium is basic for the excita

Determine the concepts of soil fertility, Determine the Concepts of Soil Fe...

Determine the Concepts of Soil Fertility  The soil fertility evaluation can be assessed by having an idea of the amount of nutrient which will be required for the growth of pla

Explain continuous murmurs and their characterstic, Explain Continuous Murm...

Explain Continuous Murmurs and their characterstic in details? These murmurs are continuous throughout systole and diastole. It is due to continuous blood flow in the same dire

What is cholesterol, Q. What is Cholesterol? In its free, unesterified ...

Q. What is Cholesterol? In its free, unesterified form cholesterol is a major component (together with phospolipid) of cell membranes. Its presence helps to stabilize membrane

Explain clear liquid diet, Explain Clear Liquid Diet Clear Liquid Die...

Explain Clear Liquid Diet Clear Liquid Diet:  It is composed  of  foods with  low residue content which  help  to minimize  the  load of food needing digestion  in  the  int

Define the primary stain and mordant, Define the Primary Stain and Mordant?...

Define the Primary Stain and Mordant? (i) Primary Stain - Crystal violet is the primary or first stain, which stains all the cells violet/purple. (ii) Mordant - Gram's iodin

Define the types of ketogenic diets, Define the types of Ketogenic Diets? ...

Define the types of Ketogenic Diets? The ketogenic diet is initiated after an initial period of Pasting for 24-72 hours, till ketosis is established. There are two types of ket

Meiosis, What problem would most likely to occur if a haploid cell attempte...

What problem would most likely to occur if a haploid cell attempted to perform meiosis?

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