Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Archive for October 2010

AVM Spetzler-Martin Grading System

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Size (largest diameter of nidus)

  • ❤ cm = 1
  • 3-6 cm = 2
  • >6 cm = 3

Eloquence (areas of sensorimotor, language, visual, thalamus, hypothalamus, internal capsule, brain stem, cerebellar peduncles, and deep cerebellar nuclei)

  • Noneloquent = 0
  • Eloquent = 1

Venous Drainage

  • Superficial only = 0
  • Deep component = 1

Add the 3 categories to get Spetzler-Martin Grade 1-5.

emedicine

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Written by lmwong

October 20, 2010 at 7:39 am

Orbital Calcifications

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  • retinoblastoma
  • astrocytic hamartoma
  • choroidal osteomas
  • phthisis bulbi
  • drusen
  • prior retinal detachment
  • retinopathy of prematurity
  • Sturge-Weber
  • von Hippel-Lindau
  • infection: toxocara, CMV

Case Review Series

Written by lmwong

October 19, 2010 at 8:12 am

Posted in differential, eye, neuro, orbit