What device is connected to the output phosphor of the image intensifier tube in DF?

• A. Photomultiplier
• B. Charge-coupled device (CCD)
• C. Image receptor
• D. Digital sensor

Answer: (B)

The device connected to the output phosphor of the image intensifier tube in digital fluoroscopy (DF) is the charge-coupled device (CCD). The role of the CCD is to convert the light emitted from the output phosphor into an electronic signal. This conversion is crucial because it allows for the capture and processing of high-quality images that can be viewed and evaluated in real-time.

The choice of a CCD is significant due to its high sensitivity and ability to produce images with minimal noise, making it an excellent option for medical imaging applications. CCDs are commonly used in various imaging systems due to these properties.

In contrast, while photomultipliers can amplify light in certain imaging systems, they are not the standard device used in modern digital fluoroscopy setups. Similarly, image receptors and digital sensors may refer to various types of imaging technologies, but in the context of a direct interface with the output phosphor of an image intensifier, the CCD is the preferred and correct answer.