1. Occlusal radiographs are useful for all of the following except one. Which one is the exception?For displaying large segments of the mandibular archFor views of the temporomandibular joint (TMJ)When there is buccal-lingual expansion of the mandibleWhen there are sialoliths in the floor of the mouthQuestion 1 of 20 2. Sharpness of image is increased byEgg shell effectSmall focal spotLow miliamperageIncreased object to receptor distanceQuestion 2 of 20 3. The purpose and use of the panaromic image include all of the following except one. Which one is the exceptionTo evaluate impacted teethTo evaluate traumaTo examine extent of large lesionsTo evaluate and diagnose cariesQuestion 3 of 20 4. reversal lines are characteristic on the radiograph ofepidermoid cystosteosarcomapaget's disease of boneosteomaQuestion 4 of 20 5. All of the following cells in the body are relatively resistant to damage by radiation exceptMature boneMuscle cellsNerve cellsMucosal cellsQuestion 5 of 20 6. X ray equipment is cleaned /disinfected withIodoformBetadineSodium hypochloriteChlorhexidineQuestion 6 of 20 7. which of the following is not done as an investigation in osteosarcoma MRI femurbone marrow biopsyx ray chestbone scanQuestion 7 of 20 8. Which of the following doesnot apply to filtration of an x-ray beam in a modern x-ray unit?Required to be 1.5 mm thick for 70 kVpReduces patient exposure by removing lower energy photonsDecreases the mean energy of the x-ray beamProvided by an aluminum filterQuestion 8 of 20 9. Bone death in radiation seen after radiation level of40 Gy50 Gy30 Gy20 GyQuestion 9 of 20 10. Machine A has FOV(field of view) of 6-12 inches,while machine B has FOV of 1.6 to 3.1 inches. Which CBCT machine will produce higher resolution image and deliver less radiationFOV does not matterMachine AMachine BBoth will give same resolution of imageQuestion 10 of 20 11. a patient sustains an injury to mandible. Which is the best projection for evaluation of the condylar neck and ramus areaReverse towneSubmentovertexlateral cephWatersQuestion 11 of 20 12. Penny test is used forPersonnel protectionStrength of developerStatic electricity artifactdarkroom safe lightingQuestion 12 of 20 13. Oxygen deficient cells areRadioresistantNo effect of oxygen levelAnticollagenase activityRadiosensitive tissueQuestion 13 of 20 14. characteristic 'tram line' calcifications in the skull radiographs is observed insturge weber syndromepaget's diseasecleidocranial dystosesmaccune albright syndromeQuestion 14 of 20 15. paralleling technique is used toprevent elongation of imageprevent shortening of imageminimize superimposition of anatomic structureminimize distortionQuestion 15 of 20 16. craniospinal irradiation is useful in which of the following conditionpilocyticastrocytomaoligodendrogliomamedulloblastomaoncocytomaQuestion 16 of 20 17. In bitewing method of radiography, for examination of maxillary deciduous lateral incisor, vertical angulation should be20103060Question 17 of 20 18. Black branching lines appear on a processed film. Which of the following is the most likely cause?fingernail damagedeveloper cutofffixer cutoffstatic electricityQuestion 18 of 20 19. Best view for condylar neck fratureReverse towne'sOccipito mentalPA skullSubmentovertexQuestion 19 of 20 20. Maxillary sinus is seen inPA viewWaters viewSubmento vertexReverse Towne projectionQuestion 20 of 20 Loading...