Which component amplifies the video signal produced by the camera tube?

The component that amplifies the video signal produced by the camera tube is the camera control unit. This unit plays a vital role in managing the output from the camera tube, ensuring that the video signal is properly processed, amplified, and transmitted for display. The camera control unit adjusts various parameters of the video signal, which enhances its quality and prepares it for further transmission to the display or recording devices.

The output phosphor, while important in converting electron beams into visible light, does not amplify the video signal itself. This part of the system is focused on the transduction process. The electron gun is responsible for directing the electron beam but does not amplify the signal either; its primary role is generating electrons. The TV monitor receives and displays the amplified signal but is not involved in the amplification process itself. Hence, the camera control unit is crucial for the amplification of the video signal within the fluoroscopic imaging system.