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Table 2 Descriptive statistics of dosimetric parameters

From: Pelvic bone marrow sparing intensity modulated radiotherapy reduces the incidence of the hematologic toxicity of patients with cervical cancer receiving concurrent chemoradiotherapy: a single-center prospective randomized controlled trial

Parameter

PBMS group (s.d.)

Control group (s.d.)

p

LSS

 Volumn (cc)

384.7 (63.7)

383.2 (69.5)

0.68

 V10%

83.1 (8.5)

99.6 (2.8)

< 0.01a

 Mean dose (cGy)

2960.1 (309.8)

3982.2 (290.3)

< 0.01a

PB

 Volumn (cc)

1164.4 (116.8)

1136.6 (161.3)

0.59

 V10%

80.0 (6.2)

94.6 (3.9)

< 0.01a

 V20%

61.3 (8.1)

81.7 (5.4)

< 0.01a

 V40%

21.0 (3.1)

29.3 (6.1)

< 0.01a

 Mean dose (cGy)

2644.4 (181.6)

3218.4 (196.6)

< 0.01a

LSS Marrow

 Volumn (cc)

45.7 (10.4)

44.8 (11.8)

0.76

 V10%

95.0 (8.0)

99.8 (1.9)

< 0.01a

 V20%

84.6 (13.0)

99.3 (3.7)

< 0.01a

 V40%

37.7 (10.4)

63.3 (19.9)

< 0.01a

 Mean dose (cGy)

3420.4 (454.8)

4190.7 (357.8)

< 0.01a

PB Marrow

 Volumn (cc)

386.3 (61.5)

398.2 (71.9)

0.49

 V10%

79.7 (7.7)

93.4 (4.8)

< 0.01a

 V20%

64.0 (8.9)

77.6 (7.6)

< 0.01a

 V40%

18.2 (3.8)

24.9 (8.8)

< 0.01a

 Mean dose (cGy)

2583.0 (260.2)

3018.5 (241.4)

< 0.01a

HIP Marrow

 Volumn (cc)

357.9 (61.7)

360.5 (61.1)

0.87

 V10%

78.1 (5.8)

92.6 (5.0)

< 0.01a

 V20%

64.0 (9.2)

74.8 (9.4)

< 0.01a

 V40%

16.6 (4.2)

19.7 (7.2)

< 0.01a

 Mean dose (cGy)

2547.5 (207.4)

2888.1 (252.6)

< 0.01a

  1. Abbreviation: V10, V20, V30, V40 volume receiving ≥ 10, 20, 30, 40 Gy, LSS lumbosacral spine, PB pelvic bone, s.d. standard deviation. aStatistically significant