MRI Sequences  

Posted bythespinebookadminPosted inAnatomy, Topics

T1 Weighted Image (T1WI) 

  • The RF pulse spins the protons 
  • T1 reflects the time it takes for that tissue’s protons spine to realign with the magnetic field 
  • Fat 
    • Bright (realigns quick) 
  • Water  
    • Dark 
  • Gadolinium Contrast 
    • bright 

T2 Weighted Image (T2WI) 

  • T2 relaxatiton time  
    • RF pulse 
    • Captures differences in spin decay 
  • Fat 
    • Intermediate 
  • Fluid 
    • bright 

STIR 

  • Short Tau Inversion Recovery 
  • Fat  
    • Suppress 
  • Purpose 
    • Edema is bright 

FLAIR 

  • Fluid attenuated inversion recovery 
  • Fluid  
    • suppress