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. 2023 Sep 24;43:100680. doi: 10.1016/j.ctro.2023.100680

Table 2.

SABR and planning details.

n = 114
Dose/fractionation
5x 10 Gy 61 (53.5 %)
3x 15 Gy 15 (13.2 %)
1x 24 Gy 12 (10.5 %)
5x 8 Gy 11 (9.6 %)
4x 10 Gy 4 (3.5 %)
Other* 11 (9.7 %)
Single fraction 16–24 Gy 15 (13.2 %)
BED10 ≥ 80 Gy 93 (81.6 %)
BED10 ≥ 100 Gy 77 (67.5 %)
GTV volume (cc), median (range) 24.4 (1.3–252.1)
PTV volume (cc), median (range) 40.2 (3.6–319.2)
Treatment finished 111 (97.4 %)
Prescription dose, mean (95 % CI), Gy 43.4 (41.6–45.3)
No. of fractions, mean (95 % CI) 4.1 (3.8–4.4)
Prescription isodose line, mean (95 % CI) 79.6 (78.7–80.4)
Dmax (Gy), mean (95 % CI) 54.7 (52.4–57.1)
D1 (Gy), mean (95 % CI) 53.3 (51.0–55.6)
D95 (Gy), mean 95 % CI) 41.2 (39.4–43.0)
D99 (Gy), mean 95 % CI) 34.7 (32.8–36.6)
CCI, mean (95 % CI) 0.81 (0.78–0.84)
CCI > 0.90, n (%) 54 (48 %)
CCI > 0.96, n (%) 16 (14 %)

Abbreviation: CCI = coverage compromise index, defined as D99/prescription dose. A CCI value < 0.90 indicates coverage compromise, as the SABR-COMET protocol indicated that 99 % of the PTV was to be covered by 90 % of the prescription dose.

*1*16 Gy (n = 1), 1*20 Gy (n = 2), 3*8Gy (n = 2), 3*10 (n = 4), 5*7 Gy (n = 1), 8*7.5 Gy (n = 1).