Magnetic Resonance - Technology Information Portal Welcome to MRI Technology
Info
  Sheets

Out-
      side
 



 
 'Rotating Frame of Reference' 
SEARCH FOR    
 
  2 3 5 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Result : Searchterm 'Rotating Frame of Reference' found in 1 term [] and 7 definitions [], (+ 1 Boolean[] results
1 - 5 (of 9)     next
Result Pages : [1]  [2]
MRI Resources 
Calculation - MRI Centers - Resources - Chemistry - Bioinformatics - Stimulator pool
 
Rotating Frame of Reference
 
A 'Rotating Frame of Reference' is a concept to simplify the complex motions of a magnetization vector. The frame of reference rotates about the axis of the external magnetic field B0 (z-axis) at the Larmor frequency of the applied RF magnetic field B1. In this simplified concept the rotating vector B1 appears stationary.
spacer
 
• Share the entry 'Rotating Frame of Reference':  Facebook  Twitter  LinkedIn  
MRI Resources 
Manufacturers - Health - Contrast Agents - Brain MRI - Artifacts - Open Directory Project
 
Carr Purcell Meiboom Gill SequenceInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.MRI Resource Directory:
 - Sequences -
 
(CPMG) This type of spin echo pulse sequence consisting of a 90° radio frequency pulse followed by an echo train induced by successive 180° pulses and is useful for measuring T2 weighted images. It is a modification of the Carr-Purcell RF pulse sequence, with 90° phase shift in the rotating frame of reference between the 90° pulse and the subsequent 180° pulses in order to reduce accumulating effects of imperfections in the 180° pulses. Suppression of effects of pulse error accumulation can alternatively be achieved by switching phases of the 180° pulses by 180°.
 
Images, Movies, Sliders:
 MRI - Anatomic Imaging of the Ankle 1  Open this link in a new window
    
SlidersSliders Overview

 Anatomic MRI of the Neck  Open this link in a new window
    
SlidersSliders Overview

 
spacer

• View the DATABASE results for 'Carr Purcell Meiboom Gill Sequence' (2).Open this link in a new window

 
Further Reading:
  Basics:
Fast Spin Echo(.pdf)
Tuesday, 24 January 2006   by www.81bones.net    
Magnetic resonance imaging
   by www.scholarpedia.org    
  News & More:
Spin echoes, CPMG and T2 relaxation - Introductory NMR & MRI from Magritek
2013   by www.azom.com    
MRI Resources 
Implant and Prosthesis pool - Knee MRI - Safety Training - Breast MRI - Education - Pathology
 
Nutation
 
A displacement of the axis of a spinning body away from the simple cone-shaped figure, which would be traced by the axis during precession. In the rotating frame of reference, the nutation caused by a RF pulse appears as a simple precession, although the motion is more complex in the stationary frame of reference.
spacer

• View the DATABASE results for 'Nutation' (4).Open this link in a new window

MRI Resources 
Stent - Most Wanted - Mass Spectrometry - Knee MRI - Contrast Enhanced MRI - Examinations
 
Phase Modulated Rotating Frame ImagingInfoSheet: - Sequences - 
Intro, 
Overview, 
Types of, 
etc.
 
spacer
MRI Resources 
Diffusion Weighted Imaging - MRI Centers - Claustrophobia - MRA - MR Myelography - Universities
 
Pulse, 180°
 
RF pulse designed to rotate the macroscopic magnetization vector 180° in space as referred to the rotating frame of reference, usually about an axis at right angles to the main magnetic field. If the spins are initially aligned with the magnetic field, this pulse will produce inversion. Also called P Pulse.
spacer
 
Further Reading:
  Basics:
Clinical evaluation of a speed optimized T2 weighted fast spin echo sequence at 3.0 T using variable flip angle refocusing, half-Fourier acquisition and parallel imaging
Wednesday, 25 October 2006
MRI Resources 
Education pool - Calculation - Lung Imaging - Jobs - Open Directory Project - Implant and Prosthesis
 
     1 - 5 (of 9)     next
Result Pages : [1]  [2]
 Random Page
 
Share This Page
FacebookTwitterLinkedIn

MR-TIP    
Community   
User
Pass
Forgot your UserID/Password ?    



New acceleration techniques will :
reduce scan times 
cause artifacts 
increase expenses 
be useful if you have a lot of experience 
doesn't do much 
never heard of 

Look
      Ups





MR-TIP.com uses cookies! By browsing MR-TIP.com, you agree to our use of cookies.

Magnetic Resonance - Technology Information Portal
Member of SoftWays' Medical Imaging Group - MR-TIP • Radiology-TIP • Medical-Ultrasound-Imaging • 
Copyright © 2003 - 2024 SoftWays. All rights reserved. [ 28 March 2024]
Terms of Use | Privacy Policy | Advertising
 [last update: 2024-02-26 03:41:00]