Final answer:
In a radiology department, clients on the network include the CT scanner, viewing consoles, and printers for diagnostic images, as they all request and use resources from a server.
Step-by-step explanation:
In a radiology department, an example of a 'client' on the network would be any device that requests and uses the resources offered by a server on the network. In this context, all three listed items—a CT scanner, a viewing console in the physician's reading room, and a printer for diagnostic images—can be considered clients. The CT scanner fits this definition particularly well since it captures images and then sends these data to a server for storage, retrieval, or further analysis. The viewing console is a client when it retrieves and displays images from the central imaging server for diagnosis. Lastly, the printer acts as a client when it receives commands to print diagnostic images from the server.