Skip to main content

Table 2 Comparison of plan parameter statistics in the competing concepts, 80% and SiB

From: Feasibility of a simultaneously integrated boost concept for hypofractionated stereotactic radiotherapy of unresected brain metastases

Parameter/median (range)

80% concept

SiB concept

p

Figure

Number of monitor units

1036 (904.4 to 1259)

933.7 (893.5 to 1221)

0.001

1a, 1b

number of segments

179 (96 to 274)

162 (106 to 205)

1b

Dmean(GTV)/Gy

42.4 (41.0 to 43.3)

42.5

2a

D98(GTV)/Gy

40.1 (36.4 to 42.0)

41.1 (40.4 to 41.5)

0.01

2b

D2(GTV)/ Gy

43.9 (43.8 to 44.1)

43.4 (43.0 to 43.7)

2c

HI(GTV) = (D2−D98)/D50

0.0894 (0.0447 to 0.1872)

0.0513 (0.0397 to 0.0757)

0.001

2d

D2(GTV without PTV)/Gy

41.9 (41.1 to 43.2)

42.2 (41.3 to 42.8)

 > 0.05

3a

CIPaddick(PTV)

0.88 (0.61 to 0.95)

0.89 (0.73 to 0.93)

 > 0.05

3b

SADG*/Gy/mm

− 2.45 (− 4.16 to − 1.85)

− 3.14 (− 4.56 to − 2.02)

0.01

3c

V24Gy(brain) normalized [Values were created by normalizing original data to trend line in Fig. 3d]

1.10 (0.749 to 1.28)

0.968 (0.727 to 1.21)

0.001

3d

  1. p is the error probability resulting from the Wilcoxon-Signed-Rank-Test when assuming a difference between the concepts. Missing p values indicate that the analysis of differences was not considered meaningful. In case of p values exceeding 0.05 there is no statistical evidence for a difference between the concepts