Calibration Of The X-Ray Modality - AGFA CR 85-XTM User Manual

CR Mammography | Introduction to the CR Mammography System | 19

Calibration of the X-Ray Modality

AEC of the X-ray modality must be calibrated for the appropriate Mammo
Cassette and Plate (MM2.0/MM3.0/MM3.0R/MM3.0T) or CR HM5.0 by the
X-ray modality field engineer to ensure the correct diagnostic image quality.
The CR Mammography specialist will assist in or verify this process. To reach
the optimal image quality the AEC must be in conformance with the following
exposure settings:
Table 1: Recommended kV-Ranges
PMMA
thickness
(cm)
20
30
40
45
50
60
70
Table 2: Target AGD Values as recommended by Agfa
PMMA
thickness
(cm)
20
30
40
45
50
Equiva- Spectrum
lent
breast
thickness
(cm)
Mo-Mo
21 24-27 kV
32 25-28 kV
45 26-29 kV
53 26-30 kV
60 26-30 kV
75 27-32 kV
90 28-32 kV
Equiva- Target
lent AGD for
breast CR35-X/
thickness CR85-X/
(cm) CR30-Xm/
DX-M with
MM3.0R
21 0.85
32 1.3
45 1.7
53 2.2
60 2.6
Mo-Rh Rh-Rh
26-29 kV 26-29 kV
26-30 kV 26-30 kV
26-30 kV 26-30 kV
27-32 kV 27-32 kV
28-34 kV 28-34 kV
Target Target
AGD for AGD for
DX-M with DX-M with
HM5.0 HM5.0
Standard Dose Opti-
mized
0.7 0.6
1.1 0.9
1.45 1.2
1.9 1.6
2.2 1.8
2344Q EN 20180406 1001
W-Rh
28-30 kV
28-30 kV
28-32 kV
32-34 kV
34-35 kV
Target
AGD for
DX-M with
HM5.0
Image
Quality
Optimized
0.85
1.3
1.7
2.2
2.6