MRI in practice - chapter 2

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Author:
swtjo3joe
ID:
288369
Filename:
MRI in practice - chapter 2
Updated:
2014-11-06 12:45:43
Tags:
t1 t2 gradientecho gradientimaging relaxationtimes protondensity pulsesequences
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Description:
image weighting and contrast
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  1. what mainly controls T1 imaging?
    • TR
    • has to be short TR to enhance t1 contrast
  2. what mainly controls T2 imaging?
    • TE
    • has to be long TE
  3. what controls proton density?
    • both TR and TE
    • has to be long TR and short TE
  4. what controls T1 in gradient echo imaging?
    • TR and flip angle
    • has to be long TR and the flip angle is high
  5. what controls T2 contrast in gradient echo imaging?
    • TE and flip angle
    • Long TE and low
  6. what controls proton density in gradient echo imaging?
    • TR, TE, and flip angle
    • long TR, low flip angle and short TE

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