User's Manual

2852 A EN 20070205

DRYSTAR AXYS

Establishing the image geometry reference values

for general radiography applications (DT 2 B and

DT 2 C)

Procedure

1 Print the QC test image or use the previously printed test image.

For an example, see “QC test image for general radiography applications (DT 2 B and

DT2C)” on page 90.

2 To determine the reference values for geometry, measure the distances

A and B of the geometric square on the test image.

3 Record these values as reference dimensions Aref and Bref on Chart 4

(‘Drystar AXYS Geometric Consistency Control Chart’). Refer to “Quality Con-

trol Charts” on page 149.

These charts will be used for the annual quality test. For more information, refer to

“Performing the Annual QC tests for general radiography applications (DT 2 B and

DT2C)” on page 103.

4 Save this film for future reference.

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.

WARNING: We strongly recommend using a 30 cm (12-inch)

machinist scale with 0.5 mm divisions (1/64 inch).