5. Measurements with the Barracuda System
Tube Current Probes
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Barracuda & QABrowser Reference Manual
10. Tap Wave to view that mA waveform.
The figure to the left shows the mA
waveform. You can use the cursor to
analyse the waveform and read the mA vale
as well as estimate the exposure time.
The MAS-3 probe can also be used for measurement of tube current during
fluoroscopy.
To measure tube current with the MAS-3:
1. Setup the Barracuda according to the description earlier in this manual.
2. Connect the MAS-3 probe to the X-ray generator as described in the MAS-3 User's
Manual.
3. Connect the MAS-3 probe to the EMM module.
4. In the QABrowser select type of measurement.
5. Next select parameter Tube Current from the menu.
6. The Select Detector screen is now displayed. Select the MAS-3 probe.
7. Tap Select.
8. The real-time display for tube current is now displayed. Set the generator. Tap
Reset.
9. Start the fluoroscopy.
10. The figure to the left shows the real-time
display during fluoroscopy. The tube
current is measured and the display is
updated approximately every four second.
Note that for low mA values the mAs and
the exposure time may not be measured.
Tap Hold to "freeze" current value in the
display. The waveform is also acquired
when Hold is activated.
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