Philips Azurion - 16.2.2 Accuracy of Dosimetric Indications and Automatic Control System; 16.3 X-ray Generator

16.2.2 Accuracy of Dosimetric Indic
aons and Automac Control System
Dosimetric Indic
aon Accuracy
Accuracy of the reference air kerma ±35% (above 100 mGy)
Accuracy of reference air kerma rate ±35% (above 6 mGy/min)
Accuracy of cumulave dose area product
±35% (above 2.5 Gy∙cm
2
)
Coecient of v
ariaon of the automac control system <0.05
All given reference air kerma (rate) values have an accuracy of ±35%, in accordance with IEC
60601-2-43:2010, 203.6.4.5.
16.3
X-ray Generator
Technical data according to IEC 60601-2-54
This secon contains X-ray generator specic informaon. Informaon about system specic usage of
the X-ray generator is described in the next secon.
Methods of measurement
Item Method
X-ray tube voltage Tube voltage is measured with the aid of balanced high-voltage bleeders in the high voltage
cir
cuit
X-ray tube current Tube current is measured on the cathode side in the reced high-voltage circuit of the X-
ray generator
Load me Load me is measured between 75% ±7.5% peak voltage of the high-voltage rise edge and
75% ±7.5% peak voltage of the high-voltage fall edge
Current-me product Current-me product is measured on the cathode side in the reced high voltage circuit of
the HV generator between 75% ±7.5% peak voltage of the high-voltage rise edge and 75%
±7.5% peak voltage of the high-voltage fall edge
Parameter / Ranges
IEC 60601-2-54 Output Parameter Mode Loading Factor
§ 201.7.9.2.1.101 a Maximum X-ray tube voltage and
highes
t X-ray tube current at that
voltage
Radiographic (Inter-
mient)
125 kV, 720 mA
§ 201.7.9.2.1.101 b Maximum X-ray tube current and
highest X-ray tube voltage at that
current
Radiographic (Inter-
mient)
1000 mA, 100 kV
§ 201.7.9.2.1.101 c Combinaon of X-ray tube current
and X-ray tube voltage resulng in
highest output power
Radiographic (Inter-
mient)
1000 mA, 100 kV
§ 201.7.9.2.1.101 d Highest constant output power at
100kV, 0.1s
Radiographic (Inter-
mient)
100 kW, 1000 mA
§ 201.7.9.2.1.101 e The lowest current me product or
the combinaon of loading factors
resulng in the lowest current me
product
Radiographic (Inter-
mient)
0.1 mAs
§ 201.7.9.2.1.101 f Nominal shortest irradiaon me
(AEC exposures)
AEC n/a no photo me technique
Technical In
formaon X-ray Generator
Azurion Release 1.2 Ins
trucons for Use 271 Philips Healthcare 4522 203 52421