WARNING:
Make sure to measure distance A from the left edge of
the left line to the right edge of the right line and
distance B from the upper edge of the upper line to the
lower edge of the lower line.
We strongly recommend using a 30 cm (12 inch) machinist
scale with 0.5 mm divisions (1/64 inch).
3. Record these values as measured distances A and B on Chart 4 (‘Geometric
Consistency Control Chart’).
4. Compare the measured A and B dimensions with the reference dimension
values, A
ref
and B
ref
on Chart 4 (‘Geometric Consistency Control Chart’).
The differences between the measured dimensions of A and B and the
reference values A
ref
and B
ref
should be less than or equal to 1.0%.
5. Check for image distortion.
6. Calculate the aspect ratio by dividing A by B.
The result must be 1 +/- 0.01
WARNING:
If the image size or distortion values exceed the limits,
contact your local service organization to resolve the
problem.
Related Links
Establishing the image geometry reference values for general radiography
applications on page 92
Charts for general radiography QC on page 130
98 | Drystar 5500, Drystar 5503 | Advanced Operation (key-operator mode)
2901J EN 20191018 0826
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