Calibration; Geometry Calibration - KaVo OP 3D Pro User Manual

9 Calibration and adjustment
4. Take an exposure.
5. Visually evaluate the result using the installed imaging software.
Subjects to be evaluated:
1. Smoothness of the exposed area. Non-exposed area surrounds the whole image.
2. High contrast resolution; minimum 3.1LP/mm must be distinguishable.
3. All four low contrast holes must be visible.
4. Roundness of the ball.
5. The ball should be placed symmetrically between the two pins. The distance from
both pins to center should be equal length.
NOTICE! The panoramic QC collimator is equipped with a 0.8 mm copper
filter. If more filtration is required, additional filtration may be attached to the
tubehead cover. The unit may be configured to use higher exposure values to
compensate for an additional 1 mm copper filter.
Ask Technical Support to adjust the copper thickness setting as required.
9.4 3D calibration
9.4.1 3D geometry calibration
1. Attach the 3D phantom base (bubble level assembly) to the lower shelf. Level it
using the screws on the bottom of the phantom base and the bubble on top of the
phantom base.
86 ORTHOPANTOMOGRAPH
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OP 3D Pro