Which types of collimators can be used in fluoroscopy?

In fluoroscopy, collimators serve a crucial function in shaping and limiting the x-ray beam to the area of interest, thereby minimizing patient exposure to unnecessary radiation. The correct answer highlights cones/cylinders and iris/diaphragm collimators, both of which are widely used in this context.

Cones and cylinders are a type of collimator that directs the x-ray beam into a specific shape, typically conical or cylindrical. This can enhance the efficiency of the imaging process by ensuring that the beam is focused on the target area while reducing scatter radiation.

Iris and diaphragm collimators, on the other hand, have adjustable apertures that allow radiologic technologists to modify the size of the x-ray beam dynamically. This is particularly beneficial because it gives the operator the flexibility to adapt to different imaging scenarios, ensuring that only the necessary amount of radiation is utilized.

These collimator types are essential for ensuring optimal image quality while safeguarding the patient and staff from excessive radiation exposure. The dynamic nature of iris and diaphragm collimators combined with the focus provided by cones and cylinders makes them very effective in the fluoroscopic imaging environment.