Brightness Gain - Video Lesson

Hey, everybody. This fluoroscopy fundamentals lesson discusses flux, minification and brightness gains, the conversion factor, and how all of these elements are used to discuss the efficiency of the image intensifier. The efficiency of the image intensifier is important because image intensifier efficiency is inversely related to patient dose. If an image intensifier has higher efficiency, then a lower dose of radiation is necessary to produce a quality image, and the exact opposite is true. If an image intensifier has lower efficiency, then a higher dose of radiation must be used to produce a quality image. Let's quickly define each of these factors related to image intensifier efficiency. Fllux gain is the term for the kinetic energy gained by photoelectrons as they are accelerated from the photocathode to the output phosphor. Minification gain is the term for the concentration of photoelectrons from the input phosphor to the output phosphor. These two factors will determine the brightness