How to set the rotation of the MatriXX correctly in the Compass detector setup?
(Imagine that we are standing behind the treatment couch facing the gantry - 0 Degree)
Rotate the collimator to zero degree.
Set zero degree if:
the detector area is closer to the gantry as the area of the electronics.
Set 90 degree cw if:
the electronics part of the MatriXX shows to the left.
Set 180 degree if:
the electronics area is closer to the gantry as the detector area.
Set 270 degree cw if:
the electronics part of the MatriXX shows to the right.