Table 1.

The Characteristics of the Eclipse VMAT Plans for Each Treatment Site Investigated.

Site	Prostate	Lung	Head and neck	Brain	Anus	Lung SBRT
No plans	N = 8	N = 9	N = 8	N = 5	N = 5	N = 7
Energy	6 MV/15 MV	6 MV	6 MV	6 MV	10 MV/15 MV	10 MV FFF
Beams	2 full arcs	2 partial arcs	2-4 partial arcs (ipsilateral)	2 full or partial arcs	3-4 full arcs	1-2 partial arcs
			or 3-4 full arcs (bilateral)
MLC type	HD	HD/Millenium	HD/Millenium	HD/Millenium	Millenium	HD
Algorithm	AAA	AXB	AXB	AXB	AAA	AXB
Dose grid	1.5-2.5 mm	1.5-2.5 mm	1.5-2.5 mm	2-2.5 mm	2.5 mm	1.2-1.5 mm
Total dose	80 Gy	50-66 Gy	60-70 Gy	60 Gy	45-54 Gy	50 Gy
Fractions	40	25-30	30-33	30	25	4