Tissue-related Artifacts

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Go to first Tissue Artifacts Q&A

Tissue Artifacts Q&A's

• What is a chemical-shift artifact?
• Doesn't the chemical shift between water and fat protons also result in a phase shift between them? If this is so, then why aren't chemical shift artifacts seen in the phase-encode direction also?  
• What can you do to eliminate or reduce the chemical shift artifact?  
• What is a chemical shift artifact of the second kind? 
• What is meant by in-phase vs out-of-phase imaging?
  
• I've noticed that T1-FLAIR images may show "India ink" outlines. Is this also a chemical shift artifact? 
  
• What are susceptibility artifacts?
  
• We recently purchased a metal artifact reduction software for one of our scanners. How does that work?
  
• What is the dielectric effect and how does it produce artifacts in MRI?
• How do you reduce dielectric artifacts? How good are dielectric pads at solving this problem?

Tissue Artifacts Topics

Adrenal adenoma
Black line artifact
Bounce-point artifact
Chemical-shift artifact
Chemical-shift artifact of the 2nd kind
Diamagnetic
Dielectric effect
Dielectric pads
Echo-planar imaging
Ferromagnetic
Hepatic steatosis
India ink artifact, (2)
In-of-phase (IP)
Inverstion time (TI)

MAVRIC
Maxwell equations
Metal Artifact Reduction Sequence (MARS)
Null point
Out-of-phase (OOP)
Paramagnetic
Phase cancellation artifact
"Salad oil" sign
SEMAC
Spin-warp imaging
Superparamagnetic
Susceptibility
View-angle Tilting (VAT)