5. Measurements with the Barracuda System
Radiography
Barracuda & QABrowser Reference Manual
2012-10/4.3A
112
If any of the displayed values are not possible to
compensate or cannot be measured with full
accuracy the symbol is displayed at the top of
screen.
When the symbol is shown you can tap it, to get
more information.
Tapping menu Main|Help brings down the built-in
help system text including images describing the
most important aspects of the program and a few
hints of how to set-up the measurement.
Please note that you can measure the exposure
time both in time ("ms", "s") as well as pulses. You
can also change the dose and dose rate units. Tap
the dark part of the display where the unit and its
prefix are displayed to get the list of units, or for the
supplementary data at the bottom, you tap the unit.
The value for the new unit is automatically
calculated and displayed.
A delay of 5 ms is standard but can be changed when necessary. It is important to
select an exposure time longer than the delay time to obtain a accurate reading. The
settings of the sensitivity both for dose and kV are preset depending of type of
measurement selected. You may get a "Lo. Signal" message if you try to measure in
fluoro mode when the selected type of measure is radiography. You can then change
the sensitivity by tapping the symbol and select MPD from the Conditions menu.
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