From: Testing the portal imager GLAaS algorithm for machine quality assurance
GLAaS [°]
IonChamber [°]
Eclipse [°]
W1 - 15°
15.0
14.7
W2 - 30°
30.9
31.2
29.8
W3 - 45°
45.1
44.0
44.4
W4 - 60°
75.6
73.9
74.3