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 'Tilt Optimized Nonsaturated Excitation' 
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Tilt Optimized Nonsaturated Excitation
 
(TONE) Used to decrease the saturation effect of inflowing blood in 3D MRA scans, the flip angle varies linearly over the excited chunk. In multi chunk scans TONE decreases the Venetian blind artifact or allows thicker chunks to cover a larger anatomical region.

See also Variable Flip Angle.
 
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Venetian Blind ArtifactInfoSheet: - Artifacts - Case Studies, Reduction Index, etc.MRI Resource Directory: - Artifacts -
 
Quick Overview
Artifact Information
NAME
Venetian blind
DESCRIPTION
Loss of signal of flowing blood
REASON
Saturation effect
HELP
Smaller 3D volume, multi chunk, TONE
The saturation effect of inflowing blood in 3D inflow MRA.
mri safety guidance
Image Guidance
Smaller 3D Volume or scans with e.g. tilt optimized nonsaturated excitation. In multi chunk scans TONE decreases this artifact or allows thicker chunks.
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• View the DATABASE results for 'Venetian Blind Artifact' (3).Open this link in a new window

 
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Magnetic Resonance Imaging (MRI)
2003   by www.hull.ac.uk    
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