BM	Brain Metastases
SRS	Stereotactic Radiosurgery
LINAC	Linear Accelerators
MLC	Multileaf Collimator
VMAT	Volumetric Modulated Arc Therapy
DCA	Dynamic Conformal Arc
TPS	Treatment Patient System
FFF	Flattening Filter Free
PO	Photon Optimizer
MU	Monitor Unit
NTO	Normal Tissue Objective
PTV	Planning Target Volume
PCI	Paddick Conformity Index
GI	Gradient Index
GPR	Gamma Passing Rate
DVH	Dose Volume Histogram
PSQA	Patient Specific Quality Assurance
O4D	Octavius 4D
PI	Plan Irregularity
LS	Leaf Speed
AAV	Aperture Area Variability
LSV	Leaf Sequence Variability
MCS	Modulation Complexity Score
ALPO	Average Leaf Pair Opening
SAS	Small Aperture Score
EM	Edge Metrics
EFS	Equivalent Field Size