Test 1: AEC Test
MAMMOMAT Inspiration 17
SPB7-330.640.01.01.02
17. Define a ROI within the AEC region according to Figure 2.
Figure 2 ROI within the AEC region
18. Note the displayed mean pixel value in Test form Test 1.
19. Repeat steps 11 to 18 for PMMA thicknesses 30 mm, 40 mm, 50 mm, 60 mm,
and 70 mm
20. Close examination.
21. Calculate global average of all mean pixel values over all PMMA thicknesses
- derive standard deviation of mean pixel values from global average over all
PMMA thicknesses
- derive resulting coefficient of variation (see Calculations, page 12)
- Note results in Test form Test 1
22. For each PMMA thickness calculate the relative deviation between the detected
mean pixel value and the global average of all mean pixel values and note result
in Test form Test 1.
23. Identify and note the maximum relative deviation out of the results from step 22.
AEC region
ROI
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