Perfusion of surgical cavity wall enhancement in early post-treatment MR imaging may stratify the time-to-progression in glioblastoma
Fig 2
Accrual process for determining the perfusion status of surgical cavity wall enhancements.
The perfusion fraction was calculated by dividing the area of the high perfusion on ASL MR imaging by the area of contrast-enhancement on postcontrast T1-weighted imaging. The perfusion fraction was 58.8% for reader 1 and 69% for reader 2.