Zabramski classification of cerebral cavernomas

Classification

  type I: subacute hemorrhage
      T1: hyperintense
      T2: hypo or hyperintense
  type II: most common type - classic "popcorn" lesion
      T1: mixed signal intensity centrally
      T2: mixed signal intensity centrally
      low signal rim with blooming on T2* sequences
  type III: chronic hemorrhage
      T1: hypointense to isointense centrally
      T2: hypointense centrally
      low signal rim with blooming on T2* sequences
  type IV: multiple punctate microhemorrhages
      T1: difficult to identify
      T2: difficult to identify
      T2* Gradient Echo: "black dots" with blooming
      difficult to distinguish from small capillary telangiectasias