Table 2.

The calculated point doses and percentage differences by using TPS and vIDC for five reference points.

Reference points	Point dose		Percent difference (TPS vs. vIDC)
	TPS (mean ± std, Gy)	vIDC (mean ± std, Gy)
Right point A	4.69 ± 1.03	4.67 ± 1.03	−0.40
Left point A	4.71 ± 1.03	4.69 ± 1.02	−0.39
Right point B	1.19 ± 0.30	1.16 ± 0.30	−2.00
Left point B	1.05 ± 0.32	1.03 ± 0.32	−2.28
Rectum	1.99 ± 0.33	1.97 ± 0.32	−1.01

TPS, treatment planning system; vIDC, volumetric independent dose calculation.