Table 2.

Comparison of two types of treatment plans

				PTV			Lungs			Spinal Cord	Heart		Chest Wall
	Plan Type	CI	HI	D99(cGy)	D95(cGy)	D2(cGy)	V5(%)	V20(%)	Dmean(cGy)	Dmax(cGy)	Dmean(cGy)	D2(cGy)	V30	D8cc(cGy)
Patient A	Partial Arcs	0.562	0.0709	4789.1	4839.9	5134.6	32.1	8.46	578	481.3	73.7	622.5	58cc	4760.3
	Whole Arc	0.583	0.073	4759.8	4802.3	5139.6	37.52	10.85	679.2	559.1	78	527.6	59.3cc	4782.5
Patient B	Partial Arcs	0.513	0.0794	4145.4	4215.7	4488.6	46.98	14.39	891.4	594.3	723.2	1683.3	37.1cc	3760
	Whole Arc	0.533	0.0769	4151.3	4210.4	4478	54.61	16.63	997.6	688.9	939.5	1910.3	39.2cc	3815.6

$\text{Dx}=\text{the dose to}\hspace{0.17em}\mathrm{x}\mathrm{\%}\text{volume of tissue}$, as displayed on the DVH, unit: cGy; $\text{Vx}=\text{percentage of tissue receiving x Gy of radiation}$, unit: %; Dmax, mean: the max, mean dose to the tissue, unit: cGy; $\mathrm{V}30=\text{how much volume of chest wall received}\hspace{0.17em}30\text{Gy}$; $\mathrm{D}8\text{cc}=\text{the dose to}\hspace{0.17em}8\text{cc volume of chest wall}$, as displayed on the DVH, unit: (cGy); $\mathrm{D}8\text{cc}=\text{a statistically significant risk factor for the development of rib fracture}$. ⁽²⁵⁾