I had my Prophalactic Cranial Irradiation (PCI) simulation today at Moffitt. With the treatment the chances of the cancer reappearing in the brain is 20 - 25 %. Without the treatment it is a 60 - 65 % They make a plastic screen mold to go over your face and then fasten to the table. The actual treatments take about 3 or 4 minutes per session. 10 sessions in all. Then hopefully I'm done with treatments, FOREVER!!