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Table 2 Target volume defined using preoperative prone MRI and postoperative prone CT (cm3)

From: A comparative study based on deformable image registration of the target volumes for external-beam partial breast irradiation defined using preoperative prone magnetic resonance imaging and postoperative prone computed tomography imaging

Target volume

Median

Range

GTVpreMR

4.64

1.34~19.06

CTVpreMR + 10

34.33

18.56~87.14

PTVpreMR + 15

71.05

41.48~150.57

CTVpreMR + 20

105.27

62.08~205.17

PTVpreMR + 25

162.00

92.27~260.95

GTVpostCT

17.22

9.04~42.46

CTVpostCT + 10

53.46

22.69~118.21

PTVpostCT + 15

118.01

79.29~227.08

  1. Abbreviations: GTV gross tumor volume, CTV clinical target volume, PTV planning target volume, TB tumor bed