How does using the magnification mode in image intensifiers affect resolution?

The use of magnification mode in image intensifiers is designed to enhance the visual quality of the image by increasing the spatial resolution. This is achieved by directing the incoming x-rays to a smaller area of the input screen while increasing the size of the output image. As a result, the effective resolution can improve, often increasing from a baseline level (in this case, from 4 line pairs per millimeter to 6 line pairs per millimeter).

This enhancement occurs because the magnification mode allows for better capture of fine details, which can be particularly advantageous in fluoroscopic imaging where precise visualization is critical for diagnosing and guiding procedures. By focusing on a smaller area while benefiting from the capabilities of the image intensifier, the details become more discernible.

The other options do not accurately represent what occurs in magnification mode. Resolution is not simply halved, nor is it maintained, and distortion is not completely eliminated. Magnification mode specifically boosts resolution, allowing practitioners to see details with greater clarity.