Table 2.

Target dose coverage, Lattice composite ($\frac{{\text{PTV}}_{6670}}{{\text{GTV}}_{2000}}\times 100$), number of noncoplanar arcs, MUs per Gy for each treatment plan, selectivity ($\frac{{\text{V}}_{6670}{\text{within PTV}}_{6670}}{{\text{V}}_{6670}}\times 100$), and gradient index of the PTV_6670 ($\frac{{\text{V}}_{50\text{\% Rx}}}{{\text{V}}_{100\text{\% Rx}}}$)

Target	Site	GTV, cm3	V95%Rx		PTV_Avoid Dmean, Gy	Lattice composite, %	Arcs, n	MU per cGy	Selectivity	Gradient index score
			PTV_6670	PTV_2000
1	Central pelvis	350	99.9	100	21.8	3.1	4	2.18	84.3	16.7
2	Right abdomen	430	99.8	100	26.7	2.3	4	3.63	67.7	14.5
3	Right abdomen	450	100	100	21.0	2.6	4	3.03	60.7	22.2
4	Mediastinum	490	100	100	21.3	1.9	5	3.29	59.2	19.1
5	Left lung	450	99.5	99.7	20.8	4.3	4	4.7	65.7	14.5
6	Right neck	615	89.6	96.5	22.2	3.1	3	3.31	60.0	14.4
7	Left lung	745	95.3	100	21.6	2.2	4	2.88	74.1	23.9
8	Central pelvis	1805	99.1	99.9	25.8	2.2	4	4.87	86.2	24.4
9	Right abdomen	940	99.8	100	22.4	2.3	4	5.48	67.0	11.2
10	Right pelvis	1035	97.2	99.4	22.2	2.3	4	3.76	79.0	26.2
11	Left abdomen/pelvis	1600	97.4	100	22.4	2.1	4	3.11	76.4	23.6
12	Left abdomen/pelvis	4475	100	99.9	29.1	1.9	8	4.76	75.4	31.9

Abbreviations: GTV = gross tumor volume; MU = monitor unit; PTV = planning target volume; Rx = prescription.