It was reported to siemens that during treatment of a patient with the oncor impression plus system, the flat panel positioner (fpp) touched the patient treatment table while the gantry was rotating.The user further reported that the touch-guard of the fpp is not sensitive enough and the setting sensitivity of the fpp collision interlock (il) is not sufficient.The treatment was completed.This event did not result in patient injury, however, if the user is not aware of the reported system behavior as described in the user manual and does not perform a "dry run" prior to the treatment of a patient, collision of the system with the patient could occur and result in severe bodily injury.
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