Images of one patient were mixed up with those of another patient.A Benefit Risk Determination has been performed to assess the impact to patient safety (BRD-150 Ultrasound Patient Data Management) and it concludes that the overall benefits offered by the EPIQ System continue to outweigh the risks associated with this type of patient data mix-up event.A plastic brushing of the control panel assembly for the EPIQ System backed out (or stick out) of the hole and prevented the swivel mechanisms from locking properly.