The use of medical film and the principle of imaging

The bright (thin) part is the part with less exposure; the fully transparent part is the part without light exposure. This is the basic process of black-and-white medical film recording image. 2. Imaging principle of color medical film color medical film has three layers of photosensitive emulsion layers, in which there are different organic compounds that can generate dyes, called color couplers (couplers). They are colorless in themselves, but they can be coupled with the oxide of the color developer to become a colored dye during color development.