Whatchu talkin’ ‘bout Willis?

This dosimetric analysis based on pooled data on cranial radiation in childhood estimates the risk of stroke by age 45 is 2-4% after 30 Gy to the circle of Willis, 5-9% after 45 Gy, and a sobering 7-13% after 54 Gy. | Waxer, Int J Radiat Oncol Biol Phys 2022