3D-CRT

IMRT

HT

Average doses

E : 25.185 (139.9%) PCF : 40.275 (100.6%) SC : 18.941 (105.2%)

E : 15.519 (103.4%) SC : 15.789 (105.2%)

E : 23.395 (99.9%) SC : 23.395 (99.9%)
3D-CRT: three dimensional conformal radiotherapy, IMRT: intensity-modulated radiation therapy, HT: helical tomotherapy, E: encephalon, SC: spinal cord, PCF: posterior cerebral fossa.
Table 3: Planned average doses (absolute and relative values, in Gy) by craniospinal irradiation to 100% of the planning target volumes.