To propose adding index of achievement (IOA) to IMRT QA process

Kim, Dong-Su; Kim, Siyong; Kang, Seong-Hee; Kim, Tae-Ho; Park, So-Hyun; Kim, Kyeong-Hyeon; Cho, Min-Seok; Shin, Dong-Seok; Noh, Yu-Yun; Chung, Jin-Beom; Suh, Tae Suk

doi:10.1186/s13014-018-1055-5

Radiation Oncology

Table 2 The 1-D systematic study results of the gamma method and the IOA for the global normalization

From: To propose adding index of achievement (IOA) to IMRT QA process

	Intentional Dose Error =>		0%			+ 1%			+ 2%			+ 3%
Intentional Spatial Error	Model =>		A	B	C	A	B	C	A	B	C	A	B	C
0 mm	Gamma pass	4%/4 mm	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
	Gamma pass	3%/3 mm	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
	rate (%)	2%/2 mm	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	56.9	32.1	90.8
	rate (%)	1%/1 mm	100.0	100.0	100.0	100.0	100.0	100.0	0	30.5	0	0	30.5	0
	IOA	Value	1.000	1.000	1.000	1.010	1.010	1.010	1.020	1.020	1.020	1.030	1.030	1.030
	IOA	Rank	1	1	1	2	2	2	5	3	5	9	6	7
1 mm	Gamma pass	4%/4 mm	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
	Gamma pass	3%/3 mm	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	99.5	99.2	99.2
	rate (%)	2%/2 mm	100.0	100.0	100.0	100.0	100.0	100.0	71.6	99.2	54.2	28.9	32.1	45.8
	rate (%)	1%/1 mm	100.0	100.0	100.0	71.6	84.7	54.2	28.4	16.0	45.8	28.0	16.0	45.0
	IOA	Value	1.013	1.028	1.016	1.016	1.029	1.019	1.024	1.034	1.026	1.033	1.041	1.034
	IOA	Rank	3	4	3	4	5	4	6	7	6	11	8	10
2 mm	Gamma pass	4%/4 mm	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0
	Gamma pass	3%/3 mm	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	71.1	98.5	54.2
	rate (%)	2%/2 mm	100.0	100.0	100.0	71.6	84.7	55.0	71.1	84.0	54.2	29.4	17.6	46.6
	rate (%)	1%/1 mm	43.1	69.5	9.2	43.1	68.7	9.2	28.9	1.5	45.8	28.4	1.5	45.0
	IOA	Value	1.025	1.055	1.032	1.027	1.056	1.033	1.032	1.058	1.038	1.039	1.062	1.044
	IOA	Rank	7	9	8	8	10	9	10	11	11	14	12	12
3 mm	Gamma pass	4%/4 mm	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	71.6	99.2	55.7
	Gamma pass	3%/3 mm	100.0	100.0	100.0	72.0	84.7	55.7	71.6	84.7	55.7	70.6	83.2	54.2
	rate (%)	2%/2 mm	44.1	69.5	10.7	43.1	68.7	9.9	70.6	67.7	53.4	29.9	3.8	46.6
	rate (%)	1%/1 mm	42.2	67.9	9.2	42.2	67.2	8.4	1.4	1.5	1.5	1.4	1.5	1.5
	IOA	Value	1.037	1.081	1.047	1.039	1.082	1.048	1.042	1.084	1.051	1.048	1.086	1.056
	IOA	Rank	12	13	13	13	14	14	15	15	15	16	16	16

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