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Spetzler-Martin grading scale for intracranial arteriovenous malformations

Spetzler-Martin grading scale for intracranial arteriovenous malformations
  Score
Size
0 to 3 cm 1
3.1 to 6.0 cm 2
>6 cm 3
Location
Noneloquent brain area 0
Eloquent brain area* 1
Deep venous drainage
Absent 0
Present 1
Score = sum of all categories, with lesions graded 1 to 5 based upon total sum (eg, 1 point = grade 1).
* Associated with significant neurologic impairment (eg, language area, motor cortex, others).
Reference:
  1. Spetzler RF, Martin NA. A proposed grading system for arteriovenous malformations. J Neurosurg 1986; 65:476.
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