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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
Zipper Artifact 
Quick Overview
Artifact Information
NAME
Zipper, star
DESCRIPTION
Bands through image center
REASON
Hardware or software problems
HELP
Larger FOV, oversampling
Zipper artifacts appear as dashed lines. There are various causes for this MRI artifact.
Most of zipper artifacts result from inhomogeneities of the magnetic field caused by interferences with radio frequency from various sources ('your radio is working in the scanner room means your shielding is not working'). Software and equipment problems can also cause zipper lines in both directions.
mri safety guidance
Image Guidance
Scanning room door during the acquisition of images is closed, shielding is working, and all disturbing devices are removed?

See also Room Shielding, Active Shielding, Radio Frequency Shielding.
Similar Artifacts:
 • Radio Frequency Noise Artifact
 • Receiver turn on Artifact
  Aliasing Artifact top
 
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 [last update: 2024-02-26 03:41:00]