Safety Directions - AGFA CR HD5 Series User Manual

24 | AGFA CR Detectors, Plates and Cassettes (CR HD5.x, CR MD4.xR, CR HM5.x, CR MM3.xR) |
Introduction to the AGFA CR Detectors, Plates and Cassettes

Safety Directions

CR detectors, plates and cassettes will not cause any special health or safety
hazard, if they are used as intended.
When working with the automatic exposure control device, take into account
the following two warnings and read the instructions:
• Overexposure (for the CR HD5.x General/FLFS detector, CR MD4.xR
General/FLFS cassette)
The backscatter protection (lead) contained in the front side of the
cassette, retains a certain amount of X-rays. Therefore the dose measured
by a cell of an AEC system positioned underneath the cassette will then be
too low which will cause excessive dose actually given to the patient.
• Wrong response
The CR detector or CR plates and cassettes causes X-ray scattering during
exposure, which is also detected by the measurement cells of the AEC.
2322D EN 20180409 1008
WARNING:
The Automatic Exposure Control (AEC) device may cause
overexposure if it is positioned underneath the cassette.
Make sure that the measurement cells of the AEC are placed
between cassette and X-ray source.
For modalities with an AEC system positioned underneath
the cassette, use the HD5.x AEC detector.
WARNING:
The Automatic Exposure Control device may give wrong
response.
Recalibrate the AEC for use with CR detectors and CR plates
and cassettes to compensate for this effect.
When switching to a different type of CR detector or CR
plates and cassettes the AEC has to be calibrated
accordingly.
Note: For calibration instructions of mammography X-Ray
modalities to be used in combination with a CR system, refer
to the CR Mammography System User Manual (2344).