A Probability Approach to the Study on Uncertainty Effects on Gamma Index Evaluations in Radiation Therapy

Table 1

Gamma results for Cases 1–5.

		Case 1	Case 2	Case 3	Case 4	Case 5
Tolerance 2%—2 mm	Dose Unc. 0.2%. Dist. Unc. 0.2 mm	1.0000	0.9929	0.9926	0.9696	0.9920
	Dose Unc. 0.2%. Dist. Unc. 0.5 mm	1.0000	0.9931	0.9930	0.9718	0.9927
	Dose Unc. 0.5%. Dist. Unc. 0.5 mm	1.0000	0.9932	0.9932	0.9726	0.9938
	Dose Unc. 0.2%. Dist. Unc. 1.0 mm	1.0000	0.9966	0.9966	0.9876	0.9972
	Classic test	1.0000	0.9894	0.9861	0.9615	0.9893
Tolerance 3%—3 mm	Dose Unc. 0.2%. Dist. Unc. 0.2 mm	1.0000	0.9957	0.9957	0.9847	0.9965
	Dose Unc. 0.2%. Dist. Unc. 0.5 mm	1.0000	0.9967	0.9968	0.9898	0.9979
	Dose Unc. 0.5%. Dist. Unc. 0.5 mm	1.0000	0.9968	0.9968	0.9909	0.9979
	Dose Unc. 0.2%. Dist. Unc. 1.0 mm	1.0000	1.0000	1.0000	1.0000	1.0000
	Classic test	1.0000	0.9933	0.9932	0.9794	0.9946