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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 
 
MRI Artifacts
  
Ultrasound Imaging Artifacts Open this link in a new window
Eddy Current Artifact 
Quick Overview
Artifact Information
NAME
Eddy current
DESCRIPTION
Image distortion
REASON
Induced by changes in a magnetic field
HELP
Eddy current compensation, shielding
Eddy currents can cause artifacts in images and may seriously degrade overall magnet performance.
mri safety guidance
Image Guidance
Common uses to reduce the influence of eddy currents on gradient fields are eddy current compensation and shielded gradient coils (active or passive). If persistent, it must be addressed by a service representative to verify the magnet performance.

See also Eddy Current Compensation.

• View the DATABASE results for 'Eddy Current Artifact' (2).Open this link in a new window

 
Further Reading:
  Basics:
Generic Eddy Current Compensation for Rapid Magnetic Resonance Imaging(.pdf)
   by www.switt.ch    
Case Study 1 :
The image distortion is visible over the whole slice.
 
Case Study 2 :
Black areas with bright spots and an overall bad image quality are characteristic for this kind of artifact.
 
Similar Artifacts:
 • Quadrupole Artifact
 • Field Inhomogeneity Artifact
  Entry Slice Phenomenon (Artifact) top
 
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 [last update: 2024-02-26 03:41:00]