Table 1.

The details of delivery configuration for each case and plan type used in this study, and in general, at our institution. “E‐comp” refers to electronic compensation. For multiple cranial metastases, we typically now use four nonaxial arcs

Fraction	Case Type	Rx Dose (Gy)	Fraction Size (Gy)	6 MV flat DMLC 600 MU/min	6 MV FFF DMLC 1400 MU/min	6 MV FFF VMAT 1400 MU/min	10 MV FFF DMLC 2400 MU/min	10 MV FFF VMAT 2400 MU/min
Conventional	Meningioma	54	1.8	7 field nonaxial	7 field nonaxial	2 nonaxial arcs	7 field nonaxial	2 nonaxial arcs
	Breast Tangents	45	1.8	Tangents w/e‐comp	Tangents w/e‐comp	n/a	Tangents w/e‐comp	n/a
	Cervix w/Elective Pelvic Nodes	50.4	1.8	7 field axial	7 field axial	2 axial arcs	7 field axial	2 axial arcs
	Lung	70	2	4 axial beams	4 axial beams	1 arc	4 axial beams	1 arc
	Prostate	70	2	5 field axial	5 field axial	1 arc	5 field axial	1 arc
	Head and Neck	70	2	9 field axial	9 field axial	2 axial arcs	9 field axial	2 axial arcs
Hypo	Partial breast	38.5	3.85	4 field nonaxial	4 field nonaxial	2 axial arcs	4 field nonaxial	2 axial arcs
Radiosurgery	Spine SBRT	16	16	7 field fan	7 field fan	2 axial arcs	7 field fan	2 axial arcs
	Triple Cranial Metastasis	18,18,&16	18,18,&16	9 field axial	9 field axial	2 axial arc	9 field axial	2 axial arcs
	Cranial Metastasis	18	18	7 field nonaxial	7 field nonaxial	3 nonaxial arcs	7 field nonaxial	3 nonaxial arcs
	Lung SBRT	60	20	13 field nonaxial	13 field nonaxial	2 axial arcs	13 field nonaxial	2 axial arcs