Final answer:
The output phosphor of the image intensifier optically interfaces with the TV camera, which converts the intensified light image into an electronic signal for display and processing.
Step-by-step explanation:
The output phosphor of the image intensifier in medical imaging technology is crucial for converting the high-energy electron images into a visual form that can then be viewed or processed. This phosphor effectively interfaces with TV camera (option 1), which is responsible for converting the intensified light image into an electronic signal that can be viewed on monitors or processed by computers.
In a typical setup, the output phosphor produces light when struck by electrons that have been accelerated and focused, and the TV camera then captures this light and turns it into an electronic video signal. This signal can then be sent through closed circuit cables (option 3) to the camera control unit (option 4) which processes the signal and displays it on a TV monitor (option 2). However, the direct interfacing occurs between the output phosphor and the TV camera.