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Table 2 D0.1 cc, D5cc, D10cc, V12, V15, and V21 related to PTV and OAR (pancreas, stomach, kidney, liver, and small intestine)

From: Effect of stomach size on organs at risk in pancreatic stereotactic body radiotherapy

Pancreatic head

 

Mean (SD)

Pancreatic body

 

Mean (SD)

PTV

D0.1 cc

48.5 (2.2)

PTV

D0.1 cc

49.2 (0.9)

 

D5 cc

35.3 (9.1)

 

D5 cc

36.7 (9.3)

 

D10 cc

27.8 (10.3)

 

D10 cc

29.0 (9.5)

 

V12 Gy

100 (0)

 

V12 Gy

99.9 (0.3)

 

V15 Gy

99.6 (0.6)

 

V15 Gy

99.4 (0.9)

 

V21 Gy

94 (7.0)

 

V21 Gy

92.2 (17.4)

Stomach

D0.1 cc

15.3 (4.3)

Stomach

D0.1 cc

19.2 (1.6)

 

D5 cc

8.7 (4.0)

 

D5 cc

11.3 (2.3)

 

D10 cc

6.8 (3.6)

 

D10 cc

* 9.0 (2.7)

 

V12 Gy

1.2 (1.5)

 

V12 Gy

2.0 (1.8)

 

V15 Gy

0.2 (0.5)

 

V15 Gy

0.3 (0.7)

 

V21 Gy

0.0

 

V21 Gy

0.0

Intestine

D0.1 cc

18.7 (2.3)

Intestine

D0.1 cc

0.0

 

D5 cc

10.1 (3.5)

 

D5 cc

7.7 (3.9)

 

D10 cc

6.7 (4.5)

 

D10 cc

5.7 (3.9)

 

V12 Gy

7.8 (11.4)

 

V12 Gy

2.1 (5.0)

 

V15 Gy

2.7 (5.1)

 

V15 Gy

0.2 (0.6)

 

V21 Gy

0.0

 

V21 Gy

0.0

Pancreas

D0.1 cc

48.1 (2.5)

Pancreas

D0.1 cc

48.3 (2.3)

 

D5 cc

27.3 (14.6)

 

D5 cc

33.7 (11.4)

 

D10 cc

16.0 (15.1)

 

D10 cc

22.0 (13.4)

 

V12 Gy

40.0 (16.7)

 

V12 Gy

64.6 (17.7)

 

V15 Gy

35.8 (15.7)

 

V15 Gy

57.1 (15.5)

 

V21 Gy

31.3 (14.4)

 

V21 Gy

45.4 (15.6)

Liver

D0.1 cc

13.4 (6.9)

Liver

D0.1 cc

13.0 (9.1)

Left kidney

D0.1 cc

7.0 (3.6)

Left kidney

D0.1 cc

14.9 (8.5)

Right kidney

D0.1 cc

8.8 (3.6)

Right kidney

D0.1 cc

3.8 (1.8)

Spinal cord

D0.1 cc

6.9 (2.6)

Spinal cord

D0.1 cc

5.3 (2.1)

  1. The correlation coefficient was calculated using D10cc as it is an index that is easy to use in clinical settings
  2. PTV, planning target volume; DX, [the dose to X% of the volume of the organ at risk (OAR)] at X values of 0.1, 5.0, and 10.0 cc; VX (the percentage of the OAR volume that received more than X Gy)
  3. *Coefficient of correlation r > 0.5