Question

When might it not be possible to use Automatic Brightness Control (ABC) control fluoroscopic equipment?

1. on infants
2. always possible
3. on extremely large patients
4. on children incapable of understanding ins

Answer 1

Automatic Brightness Control might not be possible on extremely large patients due to the limitations of the ABC system's dynamic range, which can affect image quality and radiation exposure. Hence, option 3 is correct.

Step-by-step explanation:

Automatic Brightness Control (ABC) in fluoroscopic equipment is not always possible to use with every patient. It may not be practical or possible to use ABC on extremely large patients because their body habitus can exceed the dynamic range of the ABC system, resulting in suboptimal image quality or longer exposure times which could potentially increase radiation dose. In addition, while not explicitly mentioned in the options, certain procedures or clinical situations might also prohibit the use of ABC due to specific imaging requirements or technical limitations.