IGRT 2016 Madrid

How flexible is the neck ?

How flexible is the neck ?

Count occurrence of ROI within certain margin

Count occurrence of ROI within certain margin

ROI:

ROI:

• PTV(larynx)

• PTV(larynx)

• OAR (C3-C5)

• OAR (C3-C5)

Margin 0..10 mm (1 mm)

Margin 0..10 mm (1 mm)

How flexible is the neck ?

How flexible is the neck ?

Count occurrence of ROI within certain margin

Count occurrence of ROI within certain margin

ROI:

ROI:

• PTV(larynx)

• PTV(larynx)

• OAR (C3-C5)

• OAR (C3-C5)

Margin 0..10 mm (1 mm)

Margin 0..10 mm (1 mm)

How flexible is the neck ? exible is the Results: PTV (larynx)

How flexible is the neck ? How flexibl

Count of Larynx found within margin after online registration in 249 CBCT scans

Count occurrence of ROI within certain margin

110.0

100.0

90.0

ROI:

80.0

70.0

• PTV(larynx)

60.0

50.0

• OAR (C3-C5)

40.0 Count (%)

Larynx - Multi Match

30.0

Larynx - Overall ROI

Margin 0..10 mm (1 mm)

20.0

Larynx - Larynx

10.0

0.0

0

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

1

Margin(cm)