Question
What angles should the QUASAR Penta-Guide phantom tilt plate show when aligned with the couch?
Answer
With the tilt plate aligned with the couch, the 3 angles should be:
1.0 deg corresponds to the expected couch rotation (turntable rotation).
0.75 deg corresponds to the expected couch roll (rotation about the couch longitudinal axis)
1.25 deg corresponds to the expected couch pitch (rotation about the couch lateral axis)