What imaging technique uses a persistent phosphor for image capture?

The imaging technique that uses a persistent phosphor for image capture is Computed Radiography (CR). In CR systems, the imaging plates are coated with a photostimulable phosphor material that captures and stores the x-ray image. After exposure, the plate is placed in a reader where it is stimulated by a laser, causing the stored energy to be released as light, which is then converted into a digital image for analysis.

This method is distinct because the phosphor can retain the image until it is processed, allowing for a decoupled imaging workflow where the image can be read at a later time, unlike traditional film-based systems. The use of a sensitive and efficient storage medium in CR enhances image quality, improves workflow, and provides the capability for post-processing, which are significant advancements over previous imaging techniques.

In contrast, digital radiography employs flat-panel detectors or other digital receptors that convert x-rays directly into a digital signal without the need for a phosphor plate, while conventional radiography utilizes film, which doesn't allow for the same level of image manipulation post-capture. Film screen radiography relies on the composition of film and screens to capture images, which involves chemical processes and does not utilize a persistent phosphor in the same manner as