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Chapter 3
3.18 Inter-Plate Consistency
3.18.1 Test Objective
To ensure that each imaging plate in use provides a uniform response to radiation under standardized conditions, by
checking their SNR consistency.
3.18.2 Frequency
• Initially at installation
• ANNUALLY
• Before introducing new REGIUS plates or cassettes
3.18.3 Required Equipment
• 2 mm thick Al plate
• Calibrated dose meter
• All REGIUS cassettes in use
3.18.4 Procedure (for CS-3)
Select a REGIUS cassette used for mammography. Erase the plate using ERASE MODE 2 on the REGIUS Model
190/210/110HQ.
1
Set the Al plate under X-Ray tube.
2
Place the detector of the dose meter on the breast support table.
3
Make an exposure with 28kVp in the standard mammography mode (Mo/Mo).
4
Repeat step 3 and adjust the mAs till the dose become greater than 100μGy.
5
Place the cassette on the breast support table.
6
Expose all of the facility installed cassettes with the rst mAs greater than 100μGy.
7
Process the cassettes in the REGIUS Model 190/210/110HQ. To identify the analysis target im-
age, take note of the shooting date and time.
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