Which of the following statements is false 1) "Unsafe" dark room lights cause fogging of films 2) Alveolar resorption is easily recognized on X-ray 3) Decreasing focal skin distance increases radiation safety factor 4) None of the above
RadiologyAnswer: 3
Penumbra in a processed film is related to 1) Magnification 2) Sharpness of image 3) Detail of the image 4) All of the above
RadiologyAnswer: 4
Which of the following are most sensitive to X-ray? 1) Tooth buds and salivary glands 2) Nerve and muscle tissue 3) Hair and nails 4) Cartilage
RadiologyAnswer: 1
The bisecting angle technique is used to take 1) Bitewing radiographs 2) Periapical radiographs 3) True occlusal radiographs of the mandible 4) None of the above
RadiologyAnswer: 2
Lateral skull view is used for viewing all of the following except 1) Medial wall and root of orbit 2) Nasal bone 3) Nasal septum 4) Calvarium and root of sinus
RadiologyAnswer: 3
Higher kVp is 1) Disadvantageous to film 2) Disadvantageous to patient 3) Advantageous to film 4) All of the above
RadiologyAnswer: 1
Which of the following resembles caries in radiographs? 1) Zinc oxide eugenol 2) Zinc phosphate 3) GIC 4) Polymethyl methacrylate
RadiologyAnswer: 4
80 kVp and 15 mA and source film distance of 8 inches exposure time for a film is 1/2 second. Keeping the kilovoltage and miliamperage constant exposure time at 16 inches 1. 1/2 second 2. 1 second 3. 2 second 4. 4 second
