160 MI-42-0001 Rev. 19
MAINTENANCE: Daily Gain Calibration
Perform the Image
Assessment Scan
NOTE: Image assessment requires axial manual scans at isocenter, 75mm (2.95 in.) above
isocenter, and 150mm (5.8 in.) above isocenter.
AIRO produces ionizing radiation. Excessive exposure causes serious injury. Follow
the procedures in section 2.7 Radiation Safety.
To stop the scan at any time, release the Scan button.
NOTE: An axial scan must complete approximately 2 seconds (360 degrees of rotation) before
scan data is saved.
5. Select the following parameters, and then touch
Next
.:
• Type:
Axial
• Dosage
- kV:
120
- mA:
100
• Kernel:
Standard
• Field Of View:
Large
• Navigation:
without
6. Select
Head First
and
Supine
, and then touch
Next
.
7. Select
Skip Scout Scan
, and then touch
Next
.
8.
Using Pendant buttons , move the z-axis laser-line to the center-line in module 2 of
the phantom (see d in Figure 131), and then touch
Next
to set the End Position.
9. Touch
Next
to set the Start Position at the same Gammex location.
Steps
Steps
1. After setting the End and Start Positions of the manual scan, review the displayed axial
scan parameters.
NOTE: When the Green LED is illuminated the system is ready to scan. See Figure 36.
2. If the parameters are correct, carry the Pendant Display behind a protective barrier.
The CT operator and essential staff move behind protective barriers.
3. Non-essential personnel exit the room before the scan is conducted and do not re-enter
until the ionizing radiation alerts have stopped.
4. Press and hold Scan.
The scan image is displayed as it is reconstructed.
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