How does an image intensifier work and why does it make the image clearer?

Why can image enhancement make the image clearer?
We know that in the imaging department, we must protect the health of patients, and we pursue lower x-ray doses and higher image quality. The image intensifier was invented to improve the image quality.
In the image intensifier, after the X-ray enters the image intensifier, it is attracted by the anode potential and continues to accelerate, accelerating the photoelectrons to a higher and higher speed.
This results in a sharper image than the previous effect, but with a smaller image size.

Author: X Ray Machine Accessories