Skip to main content

Table 4 Average knock-on reductions in other cardiac irradiation measures when MDHeart was purposefully reduced, as a fraction of mean baseline values

From: Cardiac-sparing radiotherapy for locally advanced non-small cell lung cancer

Irradiation measure

Structure

Mean value at baseline

Mean value after MDHeart reduction

Mean knock-on reduction

Fractional mean knock-on reduction (%)

Mean dose

LA wall

17.5 Gy

12.1 Gy

5.4 Gy

31

Right atrium

12.5 Gy

8.8 Gy

4.7 Gy

38

Left ventricle

7.3 Gy

4.3 Gy

3.0 Gy

41

Right ventricle

7.0 Gy

3.4 Gy

3.6 Gy

51

AVR*

13.8 Gy

6.7 Gy

7.1 Gy

51

Right CA†

11.8 Gy

5.9 Gy

5.9 Gy

50

Ascending aorta

27.7 Gy

20.4 Gy

7.3 Gy

26

Max dose

Right atrium

34.2 Gy

27.0 Gy

7.2 Gy

21

Left ventricle

29.5 Gy

23.3 Gy

6.2 Gy

21

Right ventricle

23.6 Gy

15.4 Gy

8.2 Gy

35

Right CA

15.5 Gy

9.4 Gy

6.1 Gy

39

Ascending aorta

61.2 Gy

59.3 Gy

1.9 Gy

3

VLAwall-63-Gy

LA wall

2.5%

0.8%

1.7%

68

VAVR-35–43-Gy**

AVR

7.3%

0%

7.3%

100

  1. *Aortic valve region
  2. †Coronary artery
  3. **Fractional volume of the AVR receiving 35–43 Gy