Yes—sometimes, but only partially. If the X-ray effect is mostly a global or gradual color/contrast shift, you can often improve the scans quite a bit with normal color correction. Tools like white balance, tint/hue adjustment, exposure/brightness, contrast, blacks, gamma, and local contrast enhancement can help remove the green cast and restore warmer tones.

What you cannot do is recover image information that was truly lost. So expect improvement, not a perfect restoration. Pushing the file too far may also make noise, reduced contrast, or other scan limitations more visible.

If the damage varies across the frame in irregular spatial patterns, correction becomes much harder. In that case you’d need localized adjustments using layers and masks rather than a single global correction.

A practical workflow is:

1. Correct white balance / tint first.
2. Restore exposure and contrast.
3. Fine-tune individual color channels or hue/saturation.
4. Add local contrast carefully.
5. If color remains unusable, consider a black-and-white conversion and shape tone with curves.

So: if the problem is mostly an overall cast and fading, Photoshop can likely get the photos to acceptable quality.