ACR Electronics L-32 FIELD MARKER LIGHTING SYSTEM Informações Técnicas descarregar pdf (Página 22)

(g) X-ray tube age.

If the measured radiation output deviates more than

40-50% from the appropriate value suggested in Table III,

the generator may need a complete kV, mA,

and time

calibration.

However,

previous generator calibration and

radiation output measurements

should be consulted. The

values in Table III are not applicable to falling

generators such as capacitor

discharge

units which do not

have constant mR/mAs values at

different mAs stations.

For detailed discussion of

x-ray generator performance

testing,

refer to

AAPM

Report No. 14, "Performance

Specifications and Acceptance

Testing

for

Generators and Automatic

Exposure Control

X-ray

Devices"

(Reference #10).

On three-phase

units (excluding grid controlled

machines) residual charge due to the capacitance of the

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ACR Electronics L-32 FIELD MARKER LIGHTING SYSTEM Informações Técnicas Página 22