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Table 2 Median (min–max) dose values of PTV_brain, PTV_spinal, and PTV_total coverage, Dmean, Dmax, CI, and HI

From: Current practices of craniospinal irradiation techniques in Turkey: a comprehensive dosimetric analysis

Adult

Conformal (n = 6) median (min–max)

IMRT (n = 3) median (min–max)

VMAT (n = 11) median (min–max)

Tomotherapy (n = 5) median (min–max)

Proton (n = 1) value

PTVbrain V95%

100 (99.9–100)

99 (98–99.7)

99.5 (97.9–100)

99.7 (98.9–100)

100

PTVbrain V100%

99.3 (97.3–99.9)

94.4 (70.7–98.8)

92.9 (77.8–99)

92.4 (55.7–95.7)

99

PTVbrain Dmean (Gy)

38.1 (37.2–40.5)

37.9 (36.4–38.1)

37.1 (36.3–37.9)

36.8 (36.0–37.1)

36.9

PTVbrain Dmax (Gy)

41.4 (38.9–46.4)

40.6 (39.4–41.5)

40.2 (38.4–43)

38.6 (37.9–39)

39.3

PTVbrain CI

2.8 (2.4–3.0)

1.6 (1.1–1.7)

1.4 (1.1–1.6)

1.4 (0.9–1.6)

1.7

PTVbrain HI

0.1 (0.1–0.2)

0.1 (0.1–0.2)

0.1 (0.1–0.2)

0.1 (0.1–0.1)

0.1

PTVspine V95%

97.1 (87.7–99.7)

99.4 (97.8–99.4)

99.6 (96.4–100)

99.6 (97.1–100)

100

PTVspine V100%

84.9 (69.5–96)

95.4 (67.7–97.0)

93.0 (72.6–98.5)

87.5 (58.5–94.6)

99.1

PTVspine Dmean (Gy)

38.7 (37.6–40)

37.8 (36.3–38)

37.4 ( 36.3–38.1)

36.7 (36.1–37.2)

36.8

PTVspine Dmax (Gy)

46.9 (44–50.6)

41.5 (39.0–42.1)

40.5 (39–45.1)

39.1 (37.8–39.8)

38.5

PTVspine CI

6.3 (5.6–7.0)

3.6 (2.5–3.8)

3.3 (2.5–3.6)

3.3 (2.1–3.6)

3.9

PTVspine HI

0.3 (0.2–0.4)

0.2 (0.1–0.3)

0.1 (0.1–0.2)

0.1 (0.1–0.2)

0.1

PTVtotal V95%

99.4 (97.8–100)

99.1 (98.4–99.2)

99.4 (97.8–100)

99.6 (99–100)

100

PTVtotal V100%

94.9 (90.6–98.5)

94.7 (69.8–98.3)

93.9 (76.2–98.5)

91.8 (56.5–95.3)

99.0

PTVtotal Dmean (Gy)

38.3 (37.7–40.0)

37.9 (36.3–38.0)

37.0 (36.3–38)

36.7 (36.0–37.1)

36.9

PTVtotal Dmax (Gy)

46.9 (44–51)

41.5 (39.4–42.1)

40.6 (39–45.1)

39.1 (37.9–39.8)

39.3

PTVtotal CI

1.9 (1.7–2.1)

1.1 (0.8–1.2)

1.0 (0.8–1.1)

1 (0.6–1.1)

1.2

PTVtotal HI

0.3 (0.2–0.3)

0.2 (0.2–0.1)

0.1 (0.1–0.2)

0.1 (0.1–0.1)

0.1

Body-PTVtotal V2%

30.4 (27.1–37)

48.7 (46.4- 50.2)

52.7 (37.2–71.7)

61.1 (57.8–70.8)

9.4

Body-PTVtotal V5%

20.0 (17.8–25.9)

34.2 (31.9–35.4)

36.8 (28–48.3)

43.9 (37.8–49.4)

8

Body-PTVtotal V10%

10.1 (15.2–23.1)

21.2 (18.9–24.4)

18.9 (16.4–21.9)

19.8 (17.3–20.1)

6.8

  1. Parameters for conformal, IMRT, VMAT, and tomotherapy techniques used in Turkey for adult patients, as well as the DVH parameters of proton center. Bold numbers represent the values closest to the ideal