1. Lead apron protectsEyesHandsThyroidGonadsQuestion 1 of 20 2. The term ALARA refers toReducing patient exposure to as low as is reasonably achievableAs little as Roentgen allowed, an algorithm for limiting patient exposureOptimizing image qualityA legal requirement to optimize occupational exposure in dental radiologyQuestion 2 of 20 3. A periapical image shows overlapped contacts. This error is caused byIncorrect horizontal angulationBeam not centered over receptorVertical angulation is excessiveVertical angulation is insufficientQuestion 3 of 20 4. paralleling technique is used toprevent elongation of imageminimize superimposition of anatomic structureminimize distortionprevent shortening of imageQuestion 4 of 20 5. A 40 year old male got a blow to angle of mandible but remained asymptomatic.Radiographic examination shows a radioopaque line in the concerned area with a sharp undercut at the lower border of mandible.It may benon union signoverlapping signseparation signsutural diasthetsisQuestion 5 of 20 6. Which property of x-ray is utilised in intensifying screensPhysicalChemicalBiologicalBiochemicalQuestion 6 of 20 7. the gold standard for the diagnosis of osteoporosis issingle energy x ray absorptiometrydual energy x ray absorptiometryquantitative computed tomographyultrasoundQuestion 7 of 20 8. Fastest X-ray filmECDFQuestion 8 of 20 9. In dental Xray tube, the number of electrons flowing per second is measured bytimemilliampereKVpnone of the aboveQuestion 9 of 20 10. radiographic view for diagnosisg horizontally favourable and unfavourable fracture isOPGPA view skullreverse towne's projectionlateral oblique viewQuestion 10 of 20 11. Occlusal radiographs are useful for all of the following except one. Which one is the exception?When there is buccal-lingual expansion of the mandibleFor displaying large segments of the mandibular archWhen there are sialoliths in the floor of the mouthFor views of the temporomandibular joint (TMJ)Question 11 of 20 12. What is the main ingredient of the developing solution that serves to convert the exposed silver salts on the emulsion film into silver metallic ions?Sodium carbonateSodium sulfiteHydroquinonePotassium bromideQuestion 12 of 20 13. at the atomic level x ray photons lose their energy throughbremstrahlung interactionscollisions with other photonscompton and photoelectric processesspontaneous disintegration and mutation of photon energyQuestion 13 of 20 14. Size of x-ray film for bitewing used in a child for molar tooth1423Question 14 of 20 15. A first-year dental student helping out in the clinic for the first time repeatedly obtains x-rays of tooth #14 with a zigzagged pattern. What could have prevented the zigzagged pattern on the radiographic image?Placing the film incorrectly with the lead portion facing the coneTelling the patient not to move during the exposureUsing the film only once instead of exposing it multiple timesBending the film less when placing in positionQuestion 15 of 20 16. moth eaten appearance is seen in all exceptosteosarcomaosteomyelitishemorrhagic bone cystOKCQuestion 16 of 20 17. a dentist is using a film badge service to measure his radiation exposure.the report from the film badge service indicates that the badge was exposed to 475 millirems in the previous month the dentist shouldstop taking radiographs immediatelyuse lower speed film to reduce MaSincrease target film distancereevaluate his radiation hygiene proceduresQuestion 17 of 20 18. Structures seen in maxillary anterior periapical radiographlateral fossaZygomatic arch/zygomatic process of maxillaMaxillary sinusGenial tuberclesQuestion 18 of 20 19. Which of the following focuses the electrons into a narrow beam and directs the beam across the tube towards tungsten target of the anodecopper steminsulating oilmolybdenum cuptungsten filamentQuestion 19 of 20 20. The radiolucent portions of the images on a processed dental x-ray film are made up of ____.A gelatin on a cellulose acetate baseUnexposed silver bromideMicroscopic grains of silver halideMicroscopic grains of metallic silverQuestion 20 of 20 Loading...
