1. zygomatic arch fractures are best seen inoccipitomental viewpostero anterior view skullsubmentovertex viewlateral view of skullQuestion 1 of 20 2. the most common cause of light radiographs isusing an exhausted developerplacing the shielded side of the film toward the tube during exposureover developing the filmsusing low kilovoltageQuestion 2 of 20 3. Oral route is used for which isotopeGalium 67F-18Iodine-123Tech 99Question 3 of 20 4. the technique employed in radiotherapy to counteract the effect of tumor motion due to breathing is known asarc technique modulationgatingshuntingQuestion 4 of 20 5. reversal lines are characteristic on the radiograph ofepidermoid cystosteosarcomapaget's disease of boneosteomaQuestion 5 of 20 6. 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 6 of 20 7. Radiotherapy is not used inSpindle cell carcinomaMucoepidermoid carcinomaSquamous cell carcinomaPaget diseaseQuestion 7 of 20 8. paralleling technique is used toprevent elongation of imageminimize distortionminimize superimposition of anatomic structureprevent shortening of imageQuestion 8 of 20 9. the x ray beam is filtered tosoften the x rayrestrict the beam sizeremove long wavelength x raysremove short wavelength x raysQuestion 9 of 20 10. radiographs alone can detect in a pocketnumber of remaining bony defectnone of the aboveshape of bony defectextent of bone lossQuestion 10 of 20 11. Beaten metal appearance of skull from insideRicketsApert syndromeCrouzon syndromeMultiple myelomaQuestion 11 of 20 12. which is the best method to reduce radiation exposure to patient during a full mouth seriesSubstitute a panaromic image for the full mouth seriesUse of E speed filmsUse of F speed filmsuse of digital imagingQuestion 12 of 20 13. all of the following is true exceptuse of E speed film reduces radiation exposureuse of rectangular collimator reduces radiation exposureuse of rectangular collimator reduces densityuse of collimator reduces size of x ray productionQuestion 13 of 20 14. 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 shoulduse lower speed film to reduce MaSincrease target film distancestop taking radiographs immediatelyreevaluate his radiation hygiene proceduresQuestion 14 of 20 15. The primary function of developer is to ____.Remove unexposed silver halide crystalsReduce solid silver grains to specks of silver halideRemove exposed silver halide crystalsReduce crystals of silver halide to solid silver grainsQuestion 15 of 20 16. On a routine radiographic examination, a well-defined radiolucent lesion was seen in the body of the mandible of a 17-year-old boy. At the time of operation, it proved to be an empty cavity. What is this lesion?Odontogenic keratocystOsteoporotic bone marrowAneurysmal bone cystTraumatic bone cystQuestion 16 of 20 17. a developer at high temperature will causevery dark imageclear white spots on the filmyellow stainsvery light imageQuestion 17 of 20 18. Least radiation exposure occurs inOPGCT scanMRIArthrographyQuestion 18 of 20 19. The radiation generated at the anode of the x-ray tube is calledPrimary radiationReverse radiationPotential radiationScattered radiationQuestion 19 of 20 20. Radiographic appearance of hypophosphatasiaFloating teethShell teethCemental thickeningGhost teethQuestion 20 of 20 Loading...
