NDAEB Exam Prep questions with correct answers

What two basic methods are used to acquire a digital x-ray image? - Answer Direct imaging(sensor) & indirect imaging(PSP) Advantages of Digital Radiography - Answer Immediate viewing of images, less radiation, no chemicals, ability to enhance images, communication with other dentists, no more lost films, remote consultation capability Disadvantages of Digital Radiography - Answer Cost, converting previous records to digital, learning the computer software, thickness and rigidity of sensors, infection control What is intraoral film composed of? - Answer Film Base - Clear Cellulose Acetate Thin Adhesive Layer Silver Halide Crystals - absorb radiation A protective layer to protect the emulsion surface. What is a latent image? - Answer The image on the film that is not yet visible because it has not been processed. What does 'film speed' refer to? - Answer The amount of radiation that is required to produce a radiograph of standard density. True or false: The larger the silver halide crystals, the faster the film speed? - Answer True