Table 4.

Comparison of R50% in the AAA and AXB plans

		R50%
Case #	PTV Vol. (cc)	RTOG 0813 Minor Deviation	AAA Plans	AXB Plans	D (%)
1	3.2	5.63‐6.82	6.09 a	6.10 a	0.21
2	12.7	4.73‐5.82	5.59 a	5.41 a	$-3.21$
3	13.1	4.71‐5.80	5.18 a	5.14 a	$-0.83$
4	16.0	4.64‐5.70	4.84 a	4.79 a	$-1.00$
5	20.8	4.53‐5.54	5.01 a	4.93 a	$-1.58$
6	21.9	4.50‐5.50	4.50 a	4.46	$-0.87$
7	23.2	4.48‐5.48	4.60 a	4.53 a	$-1.47$
8	25.0	4.45‐5.45	3.98	3.91	$-1.57$
9	25.4	4.44‐5.44	4.74 a	4.72 a	$-0.32$
10	26.1	4.43‐5.43	5.08 a	5.03 a	$-1.00$
11	27.5	4.41‐5.41	5.36 a	5.34 a	$-0.28$
12	29.4	4.38‐5.38	4.21	4.16	$-1.11$
13	30.7	4.36‐5.36	4.94 a	4.89 a	$-1.19$
14	43.0	4.13‐5.13	4.46 a	4.37 a	$-1.93$
AVG	22.71		4.90	4.84	$-1.15$
STDEV	9.57		0.56	0.56	0.83

^{a a} Data that have minor deviations from RTOG 0813 criteria.

$\text{PTV}=\text{planning target volume}$; $\mathrm{R}50\%=\text{ratio of}50\%\text{prescription isodose volume to PTV}$; $\text{AAA}=\text{anisotropic analytic algorithm}$; $\text{AXB}=\text{Acuros XB algorithm}$; $\mathrm{D}(\%)=\text{percent difference between R}50\%\text{of AXB and AAA plans}$; $\text{AVG}=\text{average}$; $\text{STDEV}=\text{standard deviation}$.