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Table 3 Patient planning results of the phase II trial for the different hair follicle subvolumes for 5 fractions (prescription dose 20 Gy)

From: Hair-sparing whole brain radiotherapy with volumetric arc therapy in patients treated for brain metastases: dosimetric and clinical results of a phase II trial

Hair follicle subvolume

Mean SALT score

Mean D50 ± SD (Gy)

% of prescribed dose

Mean V5 ± SD (%)

Mean V10 ± SD (%)

Mean V15 ± SD (%)

Mean V20 ± SD (%)

Total

75 ± 13

12.6 ± 0.9

62.9

92.2 ± 4.2

66.8 ± 6.4

31.1 ± 9.3

0.4 ± 0.8

Left

96 ± 0.05

15.7 ± 0.8

78.4

86.1 ± 1.5

79.8 ± 8.5

51.6 ± 8.5

0 ± 0

Right

96 ± 0.05

16.0 ± 0.9

80.0

85.6 ± 2.3

78.9 ± 4.5

50.5 ± 7.1

0 ± 0

Back

60 ± 18.7

10.5 ± 1.3

52.3

77.9 ± 6.8

45.0 ± 10.6

12.8 ± 9.2

0 ± 0

Top

65 ± 18.3

11.3 ± 2.7

56.3

76.6 ± 11.3

49.9 ± 18.4

21.8 ± 16.8

0.6 ± 2