Table 4 Dose Constraints for Serial Structures. D0.03 cc = maximum dose in Gy allowable to the hottest 0.03 cc; other D values are used in the same way

Optic Pathway

D0.03 cc

10

17.4

25

D0.2 cc

8

15.3

23

Cochlea

D0.03 cc

9

17.1

22.5

Brainstem

D0.03 cc

15

23.1

31

D0.5 cc

10

18

23

Spinal Cord

D0.03 cc

14

21.9

30

D0.35 cc

10

18

23

Cauda Equina or Sacral Plexus

D0.03 cc

16

24

32

D5cc

14

21.9

30

Esophagus

D0.03 cc

15.4

27

35

D5cc

11.9

17.7

27.5

Brachial Plexus

D0.03 cc

17.5

24

30.5

D3cc

14

20.4

27

Heart

D0.03 cc

22

30

38

D15cc

16

24

32

Great Vessels

D0.03 cc

37

45

53

D10cc

31

39

47

Trachea and large bronchi (mainstem, bronchus intermedius)

D0.03 cc

20.2

30

40

D4cc

10.5

–-

–-

D5cc

–-

25.8

32

Chest Wall or Rib

D0.03 cc

30

50

57

D5cc

28

40

45

Skin

D0.03 cc

26

33

39.5

D10cc

23

30

36.5

Stomach

D0.03 cc

12.4

30

32

D10cc

11.2

16.5

26.5

Bile Ducts and Gallbladder

D0.03 cc

30

36

41

Duodenum

D0.03 cc

12.4

22.2

32

D5cc

11.2

16.5

18

D10cc

9

11.4

12.5

Jejunum or Ileum

D0.03 cc

15.4

25.2

35

D30cc

12.5

17.4

20

Colon or Rectum

D0.03 cc

18.4

28.2

38

D20cc

14.3

24

25

Ureter

D0.03 cc

35

40

45

Bladder

D0.03 cc

18.4

28.2

38

D15cc

11.4

16.8

18.3

Penile Bulb

D3cc

16

25

30

Femoral Heads

D10cc

14

21.9

30