Framebased-Frameless_DV_2017

Displacement of the COM of Marker Configurations

0-1

1-2

2-3

3-4

4-5

5-7

7-9

9-11

11-13

13-15

15-17

17-19

19-21

21-23

23-25

25-27

>27

Displacement in (mm)

Percentage of patients

CT1

CT2

CT3

Average displacement:

CT-1 1.4 ± 1.4 mm

CT-2 1.6 ± 1.7 mm

CT-3

1.7 ± 1.9 mm

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.