Fluke Biomedical 35080B - Manual (Page 33)

Linear Mammo Filter Pack Option (37351)
Corrections
6
6-3
Figure 7-2. The correction curve that shows the effect of adding 0.25mm Al (0.01in Al) to the 24 microns
molybdenum filter. The aluminum makes the Linear Mammo Filter Pack (37351) read high.
To make corrections, subtract the kV correction from the indicated reading.
In most cases, amount of molybdenum filtration is unknown and the use of the Cadmium K-edge Mammo
Filter Pack (37355) for precise calibration of the generator at a kVp between 27.5 and 29.5 kV is required.
See Appendix A for more detailed instructions on
the use of the K-edge and Linear Mammo Filter
Packs (37355 and 37351 respectively).
6.5 Operating Instructions
This procedure will normally follow that given in Section 5.4 where measurement with the Cadmium K-
edge Mammo Filter Pack (37355) ended.
1. Measurement Setup - Replace the Cadmium K-edge Mammo Filter Pack (37355) with the Linear
Mammo Filter Pack (37351). Reposition the Model 35080B kVp Divider to approximately 15 inches
from the focal spot by lowering the compression paddle or other support device (see Figure 6-3).
NOTE
Indicated kVp
kV C
o
rrection
Linear Mammo Filter Pack (37351)
Correction for Aluminum Filtration