A freestanding component of an x-ray-based diagnostic digital imaging assembly [e.g., a digital x-ray system, x-ray computed tomography (CT) system, or fluoroscopy system] designed to process patient radiological images; it may additionally be intended to be integrated as part of a radiology picture archiving and communication system (PACS). It consists of dedicated hardware (e.g., computer processing unit, monitor) with integrated software typically to assist image analysis (e.g., viewing, manipulation, interpretation); it does not include controls for direct operation of the imaging system.