5. Measurements with the Barracuda System
Fluoroscopy and Pulsed Fluoroscopy
2012-10/4.3A
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Barracuda & QABrowser Reference Manual
9. Start the fluoroscopy. A little triangle is displayed, indicating that the Barracuda has
detected the radiation.
10. The figure to the left shows the real-time
display during fluoroscopy. The image
intensifier input dose rate is measured
and the display is updated approximately
every four seconds. Tap Hold to "freeze"
the currently shown value in the display.
The waveform is also acquired when Hold
is activated.
11. Release hold by tapping Hold again.
12. Stop the fluoroscopy. The RTI logo flashes up and the accumulated total dose is
displayed. The dose rate value changes back to zero.
5.5.2 kVp and Dose Rate
Use the same procedure as for the image intensifier input dose rate measurement but
select All... parameters instead.
1. The first screen shows how the continuous updated display looks like. The little
black arrow indicates that the radiation is detected and the display is updating every
four seconds.
2. The second screen shows that the MPD has detected that the fluoroscopy have
stopped by flashing the logo and then freeze the values. Note that the last
registered kV value may be lower than the one measured during the exposure. The
last display update may occur when the exposure is switched off and the kVp is
captured on the "falling edge". The dose rate shown after the logo flashes is the
average dose rate of the entire exposure.
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