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Table 2 Treatment parameters

From: Computed tomography-guided permanent brachytherapy for locoregional recurrent gastric cancer

Parameter

Median

Range

GTV (cm3)

14.58

3.23-58.65

PTV (cm3)

35.49

20.15-113.04

MPD (Gy)

120

100-160

D90 (% of prescription dose)

105.2

98.0-124.6

V100 (% of PTV)

95.8

90.2-120.5

No. of seed

40

15-75

Puncture tracks

5

2-10

Activity of seed (mCi)

0.7

0.5-0.8

Total activity (mCi)

28.0

10.5-52.5

  1. GTV: Gross Tumor Volume;PTV: Planning Target Volume; MPD:matched peripheral dose; PD prescription dose.