The described issue was examined.According to the information provided by siemens local service organization, the collimator got detached from the x-ray tube, however the cable assembly prevented it from falling to the ground.Based on the information from the local service technician and provided images, the collimator fixation screws were secured with loctite from the factory.In the past year no other service calls related to collimator detachments have been recorded by siemens service.No other activities, indicating to be a possible cause of the incident, were communicated.Furthermore, no defects at the fixing points or other parts could be detected after checkup.After all, the root cause could not be determined.At the concerned site the collimator has been remounted and the screws locked with loctite by the service technician.The system was returned to use after the correction.
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