IM Final MRI.txt

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Author:
kepling
ID:
96628
Filename:
IM Final MRI.txt
Updated:
2011-08-10 15:04:35
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IM Final MRI
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IM Final MRI
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  1. What do fluid collections help distinguish in MRI?
    Fluid = signs of infection
  2. What type of MRI is a spin lattice relaxation time?
    T1
  3. What type of MRI is a spin-spin relaxation time?
    T2
  4. What is the TE/TR measurement for T1 and T2?
    • T1 = short TE/TR
    • T2 = long TE/TR
  5. What is a VOXEL?
    pixel, cube component digitally utilized to build 3D images
  6. What is the cutoff for short/long TE/TR?
    • Short
    • TE = 40
    • TR = 500

    • Long
    • TE= 90
    • TR = 1500
  7. What is TE/TR for spin echo?
    • Long TR >1500
    • Short TE < 40
  8. Common slice pattern for MRI?
    Lateral to medial
  9. Three axis of MRI?
    • Transverse
    • Sagittal
    • Coronal
  10. What is Gadolinium used for?
    increase contrast and sensitivity to fluid for MRI
  11. What is the Magic Angle Effect?
    • 55 degree artifact
    • present on T1 but lost on T2
  12. What is the most common tendonopathy?
    Achilles (42%)
  13. What are T1/T2 readings (hyper/hypointense) for acute and chronic tendon tears?
    • Chronic:T1 = hyperintense, T2 = hypointense
    • Acute: T1 & T2 = hyperintense

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