1. The radiosensitivity of cells depends on ____.Mitotic activityMitotic futureAll of the aboveDegree of differentiationQuestion 1 of 20 2. The photosensitive component of an x-ray film is ______.Rare earth elementsSilver halide crystalsSodium thiosulfate crystalsGelatinQuestion 2 of 20 3. A nephrocalcinosis treated patient and on omeprazole for last 3 weeks, has midline crossing lesion in the lower jaw, radiolucent, hazy trabeculae,giant cells , expanding cortical plates .Diagnosis isBrown tumorCGCGOdontogenic keratocystTreated nephrocalcinosisQuestion 3 of 20 4. Radiograph of a tooth shows appearance of a halo around the root.It may be indicative ofHorizontal root fracturePeriapical periostitisRoot cariesWidening of the periodontal ligamentQuestion 4 of 20 5. campbell lines are seen in which radiographic projectiontranscranialtranspharyngealoccipitomentontransorbitalQuestion 5 of 20 6. craniospinal irradiation is useful in which of the following conditionmedulloblastomaoncocytomaoligodendrogliomapilocyticastrocytomaQuestion 6 of 20 7. Radiographic view for displaced root fragment in maxillary sinus , best view is:MRIIOPALateral oblique viewOccipitomenton at 30 degreeQuestion 7 of 20 8. characteristic 'tram line' calcifications in the skull radiographs is observed insturge weber syndromepaget's diseasemaccune albright syndromecleidocranial dystosesQuestion 8 of 20 9. Lamina dura, Nasal fossa and maxillary sinus appear distinct and clear in a radiograph due toPhotoelectric effectWindow effectEgg shell effectMach band effectQuestion 9 of 20 10. On a radiograph the facial root of a maxillary first premolar would appear distal to the lingual root if theX ray head were angled from a diatal portion relative to the premolarX ray head were angled from a mesial position relative to the premolarVertical angle of the cone were increasesVertical nagle of the cone were decreasedQuestion 10 of 20 11. Which of the following statements about obtaining the most geometrically accurate image is false?The central ray should be perpendicular to the film.The central ray should be parallel to the object.The object-to-film distance should be short.The film should be parallel to the object.Question 11 of 20 12. radiographically,in early caries one can mistake a radiolucent line below the DEJ forlines of retziusmach bandshunter schreger bandstomes granular layerQuestion 12 of 20 13. In bitewing method of radiography, for examination of maxillary deciduous lateral incisor, vertical angulation should be30602010Question 13 of 20 14. all of them use non ionizing radiation exceptultrasonographyradiographythermographyMRIQuestion 14 of 20 15. What is the "critical target" for radiation damageenzymeslysosomeschromosomesGolgi apparatusQuestion 15 of 20 16. Digital x-rays require less radiation than conventional x-rays because:The sensor is largerThe sensor is more sensitive to x-raysThe exposure time is increasedThe pixels sense transmitted light quicklyQuestion 16 of 20 17. Beaten metal appearance of skull from insideRicketsCrouzon syndromeApert syndromeMultiple myelomaQuestion 17 of 20 18. occlusal radiograph are useful in locatingsialoliths in whartons ductmaxillary sinus mucocelesthe mental foramensialoliths in stensons ductQuestion 18 of 20 19. In the body which atom is useful in magnetic resonance imaging(MRI)OxygenHydrogenNitrogenSulphurQuestion 19 of 20 20. ossifying fibroma manifest asunilocular radiolucencymultilocular radiooacityunilocular opacitymultilocular radiolucencyQuestion 20 of 20 Loading...
