5. Measurements with the Piranha System
Fluoroscopy and Pulsed Fluoroscopy
Piranha & QABrowser Reference Manual
2014-06/5.5C
112
using the Piranha Dose Probe.
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Hints:
Pulsed fluoro screen is very handy to use for several applications and is not restricted to
only measure pulsed fluoro.
It has application when measuring in Cine mode with heavy filtered beam that make the
signal too low to use the Cine mode or when the dose rate is extremely low. Then the
noise level is too high to detect the pulses in the signal. The pulsed fluoro mode works
also well on X-ray generators that only have a continuous fluoro output.
The Dose/pulse screen has been configured to always display the Dose rate and Pulse
dose rate continuously during the measurement period, even when pulse information is
lacking. Be aware of that during the fluoro the continuous dose rate value is displayed
but the dose rate value that is stored in the display after the measurement is based on
the total dose divided by the measured exposure time.
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