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

Out-
      side
 



 
 MRI Database 
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
previous     61 - 65 (of 83)     next 
R--Ra   Ra-Ra   Ra-Ra   Ra-Ra   Ra-Ra   Ra-Re   Re-Re   Re-Re   Re-Re   Re-Re   Re-Re   Re-Re   Re-Re     Re-Re   Re-Re   RF-Ro   Ro-Ro   
MRI Resources 
Stent - Movies - Knee MRI - Jobs - PACS - Mass Spectrometry
 
Resolution, Spatial
 
spacer
 
Further Reading:
  Basics:
Micro-MRI Principles, Strengths, and Weaknesses
Tuesday, 10 January 2017   by www.news-medical.net    
Resonance
 
The exchange of energy at a particular frequency between two systems; a large amplitude vibration in a mechanical or electrical system caused by a relatively small periodic stimulus with a frequency at or close to a natural frequency of the system.
Resonance is referred to as the property of an atom to absorb energy only at the Larmor frequency. The energy must also be delivered at 90° to the net magnetic vector (NMV) and main magnetic field (B0). Otherwise, no energy will be absorbed, resonance will not have occurred and an image cannot be created. In MRI systems, resonance can refer to the MR itself or to the tuning of the RF circuitry.
spacer

• View the NEWS results for 'Resonance' (259).Open this link in a new window.

• View the DATABASE results for 'Resonance' (309).Open this link in a new window

 
Further Reading:
  News & More:
Magnetic resonance imaging before ablation for atrial fibrosis helps predict success of treatment
Sunday, 1 September 2013   by medicalxpress.com    
Viewpoint: Silicon Nanowires Feel the Force of Magnetic Resonance
Sunday, 12 February 2012   by physics.aps.org    
Magnetic resonance lithography
Tuesday, 6 August 2013   by spie.org    
MRI Resources 
Services and Supplies - Blood Flow Imaging - Education - Pregnancy - Jobs - Collections
 
Resonance Frequency
 
The frequency at which the resonance phenomenon occurs. The resonance frequency is given by the Larmor equation for MRI and is determined by the inductance and capacitance for RF circuits. An atom will only absorb external energy if that energy is delivered at precisely it's resonant frequency.
The Larmor equation states that the resonance frequency of a magnetic nucleus (the radio frequency needed to excite a nucleus to the higher spin rate) is directly proportional to the magnetic environment it experiences. Atoms such as hydrogen-1 (1H) and phosporous-31 (31P) resonate at different Larmor radio frequencies because of differences in the magnetic properties of their nuclei. The resonance frequency at 1.5 T for 31P is 25.85 MHz, for 1H, 63.86 MHz.

See also Larmor Frequency.
spacer

• View the DATABASE results for 'Resonance Frequency' (14).Open this link in a new window

Resonance Offset
 
Either the phase due to an applied field or field inhomogeneity and generated during the time between two RF pulses, or the phase change of the RF pulse from one pulse to the next.
spacer
Resonant Offset Averaging in the Steady StateInfoSheet: - Sequences -
Intro, Overview, 
Types of, 
etc.MRI Resource Directory:
 - Sequences -
 
spacer

• View the DATABASE results for 'Resonant Offset Averaging in the Steady State' (2).Open this link in a new window

MRI Resources 
Mobile MRI - Mobile MRI Rental - Portals - Most Wanted - Software - MRI Centers
 
previous       61 - 65 (of 83)      next 
R--Ra   Ra-Ra   Ra-Ra   Ra-Ra   Ra-Ra   Ra-Re   Re-Re   Re-Re   Re-Re   Re-Re   Re-Re   Re-Re    Re-Re    Re-Re   Re-Re   RF-Ro   Ro-Ro   
 Random Page
 
Share This Page
FacebookTwitterLinkedIn

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



MRI is trending to low field magnets :
reduced costs will lead to this change 
AI will close the gap to high field 
only in remote areas 
is only temporary 
never 

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]