Which component of an image receptor significantly interacts with radiation?

The component that significantly interacts with radiation in an image receptor is found within the radiosensitive components. These components are specifically designed to respond to radiation, allowing for the conversion of the incoming radiation into a visible image.

Radiosensitive materials are crucial in film-based radiography as they are coated on the film or incorporated into imaging devices, which absorb the radiation and undergo a chemical change. This change creates a latent image, which is later processed to produce a visible image.

In contrast, while chemical emulsions are also related to the photographic process, they serve as the medium for the sensitive materials but are not the primary interacting agents. Optical filters play a role in enhancing image quality and protecting sensitive elements from unwanted wavelengths, but they do not directly interact with radiation in the way that radiosensitive components do. Lastly, metal casings provide structural support and shielding, preventing undesired exposure but have no direct role in the interaction with radiation for image formation.

Thus, the primary interaction with radiation that leads to image creation occurs in radiosensitive components, making this choice the correct answer.