5. Measurements with the Barracuda System
Radiography
2012-10/4.3A
119
Barracuda & QABrowser Reference Manual
The following examples very clearly shows the excellent independence of the beam
filtration for kV and dose readings.
Three exposures were made with 3 mm Al, 6 mm Al, and 12 mm Al. The MPD was
used to measure kVp, exposure time, dose, and dose rate. The pictures are stored
when the QABrowser shows estimated total filtration. The kVp value is also visible.
As seen, the measured kVp value is within 0.4 kV for the different total filtration values.
Quick-HVL
If the parameter "All w. TF+HVL" is chosen, the QABrowser will display both estimated
total filtration and quick-HVL values for every measurement. Below a sequence of
measurements is shown displaying how the total filtration and HVL can be determined
at three different kV settings with only three exposures:
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