Table 3.

Dosimetric comparison between original full‐resolution CT plans (Org.), 5 bulk density plans using each patient's average data (IndAv.), and 5 bulk density plans using population average data (PopAv.).

	Org.		Av.		PopAv.
	Mean	SD	Mean	SD	Mean	SD
PTV D95 a (cGy)	4036	1403	4081	1430	4082	1443
PTV mean dose (cGy)	4290	1388	4322	1399	4315	1402
Lung V20Gy% b (%)	13.70	8.75	13.53	8.76	13.84	8.67
Lung mean dose (cGy)	784	433	780	436	791	437

^aPTV D95; Dose covering 95% or more of the PTV.

^bLung V20Gy%: Percentage of the lung volume covered with 20Gy or more.

$\text{PTV}=\text{planning target volume};\text{SD}=\text{standard deviation}$