A set of test objects designed to be used quickly and easily to provide an ongoing check of imaging performance, particularly those aspects which are most liable to deterioration. An ongoing record of these numbers will reveal any trend towards deterioration in imaging performance.

Set includes:
•TC 21 threshold contrast test object
(144 details (12 sizes x 12 contrasts) Size range 11mm to 0.25mm, Contrast range 0.00025 to 0.930 @ 75kVp, 1.5mm Cu filtration)

•TO M2 geometry test object
(Cross ruler and grid for field size and light/x-ray congruence, with beam centring tower)

•TO MS5 mesh test object
(50mesh – 0.20mm wire, 310micron aperture)

•TO MTF
(MTF edge with free software)

•Resolution test object
(0.5 to 5.0 LP/mm)

•1.5 mm Copper filter x 1

•Lead block

•Ruler and Tape Measure