What is the latent image?

The latent image refers to the invisible image that is formed on the radiographic film after it has been exposed to radiation but before it has been processed. When the film is exposed to X-rays or another type of radiation, a latent image is created within the emulsion layer of the film as a result of the interaction between the radiation and the silver halide crystals present. This image remains hidden until the film is developed, usually through a chemical processing routine that reveals the image by converting the latent image into a visible one.

Understanding the concept of the latent image is essential for anyone involved in radiology, as it underscores the importance of proper film handling and processing techniques in obtaining accurate diagnostic images. The process of developing the film is crucial for making the latent image visible so that it can be interpreted by healthcare professionals.