Skip to main content

Table 1 HU changes of OARs due to the CA injection

From: Dosimetric effect of CT contrast agent in CyberKnife treatment plans

OARs

No. of cases

Baseline [HU]

Max changes [HU]

Average changes [HU]

Aorta

5

53

223

171 ± 40

Heart

5

12

164

155 ± 7

Kidney

10

13

158

124 ± 33

Lung

14

-650

121

45 ± 32

Liver

12

40

64

45 ± 14

Stomach

3

-64

55

40 ± 16

Rectum

6

17

37

33 ± 5

Urethra

5

37

42

32 ± 9

Esophagus

14

-126

67

31 ± 14

PTV

22

-16

113

30 ± 28

Bowel

17

-72

40

27 ± 9

Bladder

6

11

14

8 ± 3

Spinal cord/cauda equina

17

41

12

6 ± 3

Femur head

5

234

4

2 ± 1