Several calibrations require the front cover to be opened:
- Reading grid voltage label
- X-ray tube mechanical adjustments
- Tungsten slit for Focal Spot Width
- UHR Comb adjustment
A-plane alignments as well as DFS and SFS calibrations are not affected by gantry temperature.
For proper Image calibrations, the system must be fully covered and closed up while scanning.
- This is an absolute requirement for Phantom, Air and HCOR calibrations.