DR Detector Calibration|Calibrating the DR Detector|15
Ralco collimators may limit the X-ray field. To overrule the limitation, the collimator must be un-
locked using a key and the collimation must be applied manually.
Exposure Sequence
Procedure:
1. Set the mAs value to the indicative value for the first exposure level.
2. Make two exposures.
The DR Calibration Tool may instruct to increase or decrease the mAs setting to reach the re-
quired exposure level.
3. Make 10 exposures.
4. Set the mAs value to the indicative value for the second exposure level.
5. Make two exposures.
The DR Calibration Tool may instruct to increase or decrease the mAs setting to reach the re-
quired exposure level.
6. Make one exposure.
Partial calibration
For veterinary applications, a partial calibration can be performed. The exposed area during cali-
bration is not covering the whole detector surface. A minimum exposed area of 10 by 12 cm is re-
quired.
Warning: It is not allowed to use a partially calibrated DR detector for human patients.
Procedure:
Make the exposures as instructed by the DR Calibration Tool.
The tool will detect the partial exposure and ask for confirmation that a partial calibration can be
applied.
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