I downloaded Kodak Medical X Ray Imaging paper and I saw a technology quite impressive. Its all about coating the sensor with thin metal and stops the latent image formation in the sensor and get razor sharp point spread function.

This technology is similar to metamaterials technology which uses very thin silver coatings.

May be coating the emulsion with water soluble coating will make the same !
If it is not possible samething can be thinked to the reverse side may be !

Any idea ?