Philips Azurion - Page 273

Exposure Centeray X-ray generator (Typical range of applic
aon)
Certeray Performance Requested by Standard
Tube current ± (3% + 1.0 mA)
(Tp > 35 ms)
± (8% + 1.0 mA)
(1 < Tp < 35 ms)
± 20%
Exposure me ± (6% + 0.1 ms) ± (10% + 1 ms)
mAs post-exposure display ± (3% + 0.2 mAs)
Post-exposure me display ± (2% + 0.1 ms)
IEC 60601-2-54, cl.203.6.4.4
The s
ystem adapts the exposure sengs by varying one or more loading factors, based on the source-
to-image distance and objects in the beam using automac exposure control. The following graphs
show an example of the range and inter-relaonship of loading factors for a single X-ray protocol.
Figure 129 Loading f
actors (Le Coronary, 15 fps) - pulse width and tube voltage
Legend
1 Tube voltage (kV)
2 Pulse width (ms)
Figure 130 Loading factors (Le Coronary, 15 fps) - tube current and voltage
Technical In
formaon X-ray Generator
Azurion Release 1.2 Ins
trucons for Use 273 Philips Healthcare 4522 203 52421