MRI analysis
hemorrhage
HEMORRHAGE, PARENCHYMAL HEMORRHAGE
Image analysis was independently conducted by two licensed and experienced, board-certified academic neuroradiologists with expertise in cerebrovascular imaging (RIM and JSC). Post-treatment MRI examinations were compared with pre- and post-contrast baseline MRI data. Analyses were conducted immediately after each MRI acquisition and included assessment for the presence versus absence and location of the following: Parenchymal enhancement, extraparenchymal enhancement, parenchymal hemorrhage, extraparenchymal hemorrhage, restricted diffusion, parenchymal and/or extraparenchymal T2-weighted FLAIR signal hyperintensity, and mass effect. The duration of these imaging effects was also assessed by analyzing serial MRI data. Both readers concurred on diagnostic findings and interpretations on all patients.Post-treatment contrast enhancement data were correlated with cerebral angioarchitecture of treated subjects as well as that on MRI of a young reference patient (i.e., non-trial participant). SWI sequence analysis was performed to map intracerebral venous anatomy [