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Table 2 The main dosimetric and volumetric data observed in our patients' group.

From: Toxicity and cosmesis outcomes after single fraction partial breast irradiation in early stage breast cancer

Parameter

Median

Min

Max

CTV volume (cc)

79

15

240

PTV volume (cc)

96

17

290

PTV minimum dose (cGy)

1804

829

1988

PTV mean dose (cGy)

2112

1797

2181

PTV maximum dose (cGy)

2185

1870

2247

Whole breast volume (cc)

892

230

2608

Whole breast mean dose (cGy)

971

436

1411

INBV (cc)

743

205

2441

INBV mean dose (cGy)

740

100

1153

Skin volume (cc)

165

64

385

Skin mean dose (cGy)

544

246

845

V2.1 Gy (%)

84

41

99

V18.0 Gy (%)

20

5

41

V21.0 Gy (%)

9

0

28

V21.0 Gy (cc)

67

0

263

PTV/WB

12%

3%

26%

  1. Abbreviations: WB = Whole breast; INBV = WB volume -PTV; PTV/WB = ratio between PTV and WB volume; VXGy(%) or VXGy(cc), that represent the percent of the breast volumes or the volume (cc) receiving more than Ă— Gy, respectively.