HS-WBI	hippocampal-sparing whole-brain irradiation
WBI	whole brain irradiation
IMRT	intensity-modulated radiation therapy
IMPT	intensity-modulated proton therapy
VMAT	volumetric modulated arc therapy
BROAD-RT	biaxially rotational dynamic radiation therapy
CT	computed tomography
PTV	planning target volume
MU	monitor unit
Conv-	conventional
HI	homogeneity index
Vxx	volume receiving xx Gy
Dxx	dose receiving xx% of the volume
CBCT	cone beam CT