Which of the following can serve as an Image Receptor (IR)?

• A. Film
• B. Phosphor storage plate (PSP)
• C. Digital sensor
• D. All of the above

Answer: (D)

An Image Receptor is anything that captures the x-ray energy and turns it into a viewable image. Film does this through exposure of silver halide crystals and chemical development to produce a visible image. A phosphor storage plate stores energy from the exposure in its phosphor material; when read, a laser stimulates the plate and the emitted light is converted into a digital image. A digital sensor directly (or via a scintillator) converts the x-ray energy into an electronic signal that forms a digital image. Because each option can receive x-rays and produce a usable image, all of the above can serve as an Image Receptor.