A set of test objects designed to be used quickly and easily on an annual / commissioning basis 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:
• TO 10 threshold contrast test object
• TO N3 contrast test object
• TO GS2 grey scale test object
• TO E1 edge test object
• TO M1 geometry test object
• TO MS1,TO MS3, TO MS4 mesh test objects,
• 1.0 mm Copper filter x 1, 0.5 mm Copper filter x 2
• Resolution test pattern (0.5 to 5.0 LP/mm) 
• Video cable and adaptors