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
RadiologyAnswer: 3
In radiobiology, the "latent period" represents the period of time between 1) Cell rest and cell mitosis 2) The first and last dose in radiation therapy 3) Film exposure and image development 4) Radiation exposure and its biological effects
RadiologyAnswer: 4
Caries which can be best diagnosed on radiographs 1. Occlusal caries 2. Root surface caries 3. Interproximal caries 4. Surface caries on buccal surface
RadiologyAnswer: 3
Radiographically, the normal horizontal plane of alveolar bone interdentally is related to 1) Cementoenamel junction of adjacent teeth 2) Epithelial attachement of adjacent teeth 3) Trabecular pattern of bone 4) All of the above
RadiologyAnswer: 1
Quantity of current can be increased by 1) Increased milliamperage 2) Increased time 3) Increased tube current 4) All of the above
RadiologyAnswer: 4
Mean exposure of radiation from pantamograph is 1) 90 mR 2) 120 mR 3) 250 mR 4) 300 mR
RadiologyAnswer: 3
The best image obtained if duplicating film is exposed tp 1) X-rays 2) UV rays 3) Visible light 4) Infrared light
RadiologyAnswer: 2
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
