Critical appraisal of the accuracy of Acuros-XB and Anisotropic Analytical Algorithm compared to measurement and calculations with the compass system in the delivery of RapidArc clinical plans

Table 5 SBRT (Prescription 60.0 Gy [60.0.-60.0])

Parameter	Acuros XB	AAA	CC	p
PTV ( Volume [cm³] = 68.9 ± 50.2)
Mean [%]	102.2 ± 2.4	102.9 ± 3.4	102.0 ± 2.7
D_5%- D_95% [%]	19.2 ± 4.0	18.1 ± 2.5	20.2 ± 3.6	b
V_95% [%]	91.9 ± 3.0	93.2 ± 4.0	91.0 ± 3.1	b,c
V_105% [%]	35.0 ± 16.9	41.2 ± 21.4	35.2 ± 17.0
CI_90%	1.1 ± 0.2	1.2 ± 0.2	1.1 ± 0.2	b,c
Ipsil Lung ( Volume [cm³] = 1202.5 ± 421.1)
Mean [%]	14.7 ± 12.7	14.8 ± 12.6	14.8 ± 12.5
V_20Gy [%]	15.1 ± 17.4	15.0 ± 17.3	15.3 ± 17.1
D_1% [%]	74.8 ± 43.5	75.2 ± 43.8	74.9 ± 43.7
Contr Lung ( Volume [cm³] = 1164.7 ± 601.0)
Mean [%]	2.4 ± 2.0	2.4 ± 2.0	2.2 ± 1.9
V_5Gy [%]	5.4 ± 10.5	5.1 ± 9.9	4.9 ± 9.4
D_1% [%]	7.9 ± 4.9	8.0 ± 4.9	7.7 ± 5.0	b,c
Ribs ( Volume [cm³] = 213.5 ± 327.2)
D_1% [%]	83.3 ± 15.0	85.1 ± 15.7	83.7 ± 14.7	a
V_30Gy [%]	19.0 ± 18.7	20.1 ± 19.9	19.1 ± 18.8
Liver ( Volume [cm³] = 1135.0 ± 489.9)
Mean [%]	14.7 ± 4.3	15.0 ± 4.3	14.5 ± 4.3	a,b,c
D_1% [%]	88.6 ± 33.1	90.1 ± 33.8	89.0 ± 33.3
V_21Gy [%]	11.6 ± 6.2	11.8 ± 6.2	11.6 ± 6.1

ISSN: 1748-717X