SBRT 2016

Displacement of the COM of Marker Configurations

60

CT1 CT2 CT3

Average displacement:

50

CT-1 1.4 ± 1.4 mm

CT-2 1.6 ± 1.7 mm

40

van der Voort van Zyp NC, Hoogeman MS, van de Water S, Levendag PC, van der Holt B, Heijmen BJ, Nuyttens JJ. Stability of Markers Used for Real-Time Tumor Tracking After Percutaneous Intrapulmonary Placement. Int J Radiat Oncol Biol Phys 2011.

CT-3

1.7 ± 1.9 mm

30

20

Percentage of patients

10

0

0-1

1-2

2-3

3-4

4-5

5-7

7-9

>27

9-11

11-13

13-15

15-17

17-19

19-21

21-23

23-25

25-27

Displacement in (mm)