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Z Score
 
This statistical evaluation procedure is used to calculate a differential image from the activated and non-activated images in BOLD imaging.
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• View the NEWS results for 'Z Score' (1).Open this link in a new window.
Zebra Stripes ArtifactInfoSheet: - Artifacts -
Case Studies, 
Reduction Index, 
etc.MRI Resource Directory:
 - Artifacts -
 
See Zero Fill Artifact.
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Further Reading:
  Basics:
Artifacts in MRI
Saturday, 1 October 2011   by www.huc.min-saude.pt    
MRI Resources 
Claustrophobia - Abdominal Imaging - Shoulder MRI - - Services and Supplies - MRI Physics
 
Zero Fill ArtifactInfoSheet: - Artifacts -
Case Studies, 
Reduction Index, 
etc.MRI Resource Directory:
 - Artifacts -
 
Quick Overview
Artifact Information
NAME Zero fill
DESCRIPTION Zebra stripes or other anomalies
REASON Signal changes
HELP Surface coil, change the sequence

Missing or zero filled data in k-space can cause artifacts from anomalies to zebra stripes.


Image Guidance
Change the sequence parameters or try to use a surface coil. If the problem persists, it must be addressed by a service representative.
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• View the DATABASE results for 'Zero Fill Artifact' (2).Open this link in a new window

 
Further Reading:
  Basics:
Zero-Fill Artifacts
   by www.mritutor.org    
Zero Fill Interpolation Processing
 
ZIP processing is a reconstruction option that uses zero-filling methods in k-space to interpolate the original data matrix from its acquired size to a higher spatial resolution data set in all three dimensions.
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• View the DATABASE results for 'Zero Fill Interpolation Processing' (2).Open this link in a new window

Zero Filling
 
Substitution of zeroes for unmeasured data points in order to increase the matrix size of the new data prior to Fourier transformation of MR data. This can be equivalent to performing an interpolation (ZIP - zero fill interpolation processing) in the transformed data, resulting in pixels smaller than the actual resolution of the image.
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• View the DATABASE results for 'Zero Filling' (4).Open this link in a new window

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