Average Glandular Dose; Test Objective; Frequency; Required Equipment - Konica Minolta CS-3 Quality Control Manual

3 .6

Average Glandular Dose

3 .6 .1

Test Objective

To determine the average glandular dose delivered for a particular object .
3 .6 .2

Frequency

• Initially at installation of the mammography X-ray unit
• ANNUALLY
• As part of an MEE
3 .6 .3

Required Equipment

• RMI-156 Phantom
• Calibrated dose meter
3 .6 .4

Procedure

1
From the previous Beam Quality test, make a note of the kVp and HVL (Half Value Layer) val-
ues .
2
Select the appropriate chart from the "Mammography Quality Control Manual" (ACR, 1999)
Medical Physicist Section pg 281-283, based upon target and filtration used in the Table MP-3
(Beam Quality) . This chart will be used to enter the table value on the Table MP-5 (Average
Glandular Dose) .
3
Position the RMI phantom in the center of the breast support table at the edge of the chest
wall . The phantom should cover the cells used for AEC .
4
Place the detector of the dose meter on the breast support table next to the RMI phantom . It
should be 4cm from the chest wall and not over the cells used for AEC .
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