In which type of image intensification system will mottle be most visible?

Mottle refers to the granularity or noise seen in an image that can obscure fine details, and it is closely related to the characteristics of the image intensification system being used. In a high resolution, high contrast system, the ability to resolve fine details is maximized, and the use of high contrast tends to make any existing mottle more apparent.

High resolution ensures that even slight variations in density will be visible, while the high contrast emphasizes differences, making the granularity or noise stand out more prominently in the resulting image. Areas of low density will be more distinct against backgrounds of high density, drawing attention to the mottle.

In contrast, systems described as low resolution or low contrast tend to serve to smooth out these variations, leading to a more uniform appearance and thus less perceptibility of mottle. Therefore, in high resolution and high contrast systems, the visibility of mottle is heightened due to the optimal conditions for detecting even subtle imperfections in image quality.