Mobius AIRO Mobile CT System - Page 173

MI-42-0001 Rev. 19 161
MAINTENANCE: Daily Gain Calibration
Raise Gammex 464
Phantom above
Isocenter
When required, raise the phantom a required distance above system isocenter. Different system
configurations require different setups.
• For systems that feature Trumpf TruSystem Columns, use either column remotes or column
keypads to raise phantoms on compatible, radio-lucent tables. For information about using
Trumpf columns see:
- MI-42-0167 AIRO Original Trumpf Column Supplement
- MI-42-0165 AIRO Updated Trumpf Column Supplement
• For column-less systems, make sure the platform supporting the Gammex 464 Phantom is
radio-lucent, has consistent thickness and density, and remains stable and level relative to the
AIRO base at all required heights.
NOTE: Image assessment requires axial manual scans at isocenter, 75mm (2.95 in.) above
isocenter, and 150mm (5.8 in.) above isocenter.
Verify Gammex 464
Ce
nte
r Alignment
After raising the phantom to the required height above isocenter, verify that the phantom is still
aligned along X-axis and Z-axis at the Module 2 center line. See d and f in Figure 131.
Steps
1. Raise the tabletop or support platform the required amount.
• For systems featuring Trumpf TruSystem Columns:
- If a remote for the original Trumpf column is available:
1. Ensure that the remote is paired with the column. See MI-42-0167 or MI-42-0165.
2. On the remote, read the measurement of Trumpf tabletop height at isocenter.
Measurements must be as precise as possible.
3. Mark or note the height shown on the remote.
4. Add the required distance above isocenter to the shown height.
5. Use the remote to raise the tabletop the calculated total height above isocenter.
- If a remote for the original Trumpf column is not available:
1. Using a metric tape measure, measure from the floor to the tabletop height at
isocenter.
Measurements must be as precise as possible.
2. Mark or note the measured height.
3. Add required distance above isocenter to the measured tabletop height and 
extend the tape measure to the calculated total.
4. Using the column keypad or updated column remote, raise the tabletop to the 
calculated total height shown on the tape measure.
• For column-less systems:
1. Using a metric tape measure, measure from the floor to the support platform 
height at isocenter.
Measurements must be as precise as possible.
2. Mark or note the measured height.
3. Add the required distance above isocenter to the measured height.
4. Raise the support platform to the calculated total height shown on the tape
measure.
5. Ensure that the phantom remains level at the new height.
2. Mark or make note of the new height.