![Show Menu](styles/mobile-menu.png)
![Page Background](./../common/page-substrates/page0512.png)
Online Position Verification
•
To reduce random error:
Online position verification is needed
•
Different methods available
Two dedicated EPI field, e.g. 40 and 320 degrees
Correction for imaging dose necessary
Stereo Graphic Targeting
MV and kV together
Correction for imaging dose necessary
Two kV images
With CBCT or OBI
With ExacTrack system