Table 3.

Summary of volume and dose parameters for normal tissues

Structure	Quantity	Case1 (n = 11)		Case2 (n = 7)
		mean	SD	mean	SD
Cord	Volume (cc)	24.76	5.48	54.59	18.63
	Dice *	81.3%	6.9%	76.2%	8.6%
	Max dose (Gy) - inst †	47.79	3.19	35.31	9.69
	Max dose (Gy)–cons ‡	51.08	4.33	36.60	10.76
Lungs	Volume (cc)	2258	49	3912	242
	Dice	97.5%	1.0%	96.9%	1.6%
	V20Gy - inst	33.8%	3.9%	29.8%	4.0%
	V20Gy - cons	33.6%	4.2%	29.4%	4.2%
Esophagus	Volume (cc)	25.41	6.94	46.06	14.53
	Dice	77.3%	9.3%	75.8%	11.0%
	Mean dose (Gy) - inst	39.26	6.69	18.35	4.69
	Mean dose (Gy) - cons	39.91	3.66	19.45	4.98
Heart	Volume (cc)	490.4	77.7	896.6	176.7
	Dice	86.4%	6.1%	86.8%	5.1%
	V65Gy - inst	18.9%	8.7%	2.47%	3.42%
	V65Gy - cons	20.7%	9.6%	2.43%	2.53%
Brachial Plexus	Volume (cc)	13.76	4.90	16.01	7.09
	Dice	40.5%	17.4%	40.4%	21.2%
	Max dose (Gy) - inst	1.78	0.71	2.25	0.76
	Max dose (Gy) - cons	1.92	0.65	1.98	0.47

Abbreviations: Dice = Dice’s coefficient; n = number of cases.

^*Dice’s coefficient between institutions’ contour and consensus contour.

^† Dose parameter calculated with institutions’ contour.

^‡ Dose parameter calculated with consensus contour.