1. reversal lines are characteristic on the radiograph ofepidermoid cystosteomaosteosarcomapaget's disease of boneQuestion 1 of 20 2. which of the following views is useful in viewing a stone in the submandibular glandocclusal view of mandiblesubmentovertexOPGtomogramQuestion 2 of 20 3. which of the following is the least radiosensitive tissuesRBC,muscle cell,nerve cellmuscle cells,nerve cells,bone cellsWBC,bone cells,epithelial cellsconnective tissue cell,endothelial cell,muscle cellQuestion 3 of 20 4. X ray equipment is cleaned /disinfected withSodium hypochloriteIodoformChlorhexidineBetadineQuestion 4 of 20 5. In cone beam CT scan what is the artifact seen when the size of the object being imaged is smaller than the voxel sizePartial volume averagingBeam hardeningStreakingDistortionQuestion 5 of 20 6. ossifying fibroma manifest asmultilocular radiolucencyunilocular radiolucencyunilocular opacitymultilocular radiooacityQuestion 6 of 20 7. Maxillary sinus is seen inSubmento vertexPA viewReverse Towne projectionWaters viewQuestion 7 of 20 8. in radionucleotide imaging the most useful radio pharmaceutical for skeletal imaging isgallium 67technetium-sulphur colloidtechnetium-99mtechnetium -99m linked to methylene disphosphonateQuestion 8 of 20 9. sunburst appearance on radiograph is seen inosteopetrosisosteosarcomaosteofibromax ray chestQuestion 9 of 20 10. Oxygen deficient cells areRadioresistantRadiosensitive tissueNo effect of oxygen levelAnticollagenase activityQuestion 10 of 20 11. When mounting a full mouth survey, radiographs of which of the following teeth should be mounted first for orientationmaxillary central incisorright and left bitewingsmaxillary right and left molarsmandibular central incisorsQuestion 11 of 20 12. All are advantages of digital radiography exceptSize of the intraoral sensorDigital subtractionPatient educationThe ability to enhance the imageQuestion 12 of 20 13. It is important that the film base be ____.Completely clearopaque sensitive to XrayFlexibleQuestion 13 of 20 14. The angle at which the operator should stand from x ray tube for safety150-185 degree135-180 degree45-90 degree90-135 degreeQuestion 14 of 20 15. all of the following is true exceptuse of rectangular collimator reduces densityuse of rectangular collimator reduces radiation exposureuse of collimator reduces size of x ray productionuse of E speed film reduces radiation exposureQuestion 15 of 20 16. the most common cause of light radiographs isusing an exhausted developerusing low kilovoltageover developing the filmsplacing the shielded side of the film toward the tube during exposureQuestion 16 of 20 17. All of the following cells in the body are relatively resistant to damage by radiation exceptMucosal cellsMuscle cellsNerve cellsMature boneQuestion 17 of 20 18. which one of the following is used to show base of skull,sphenoid sinus,position and orientation of the condyles and fractures of zygomatic archreverse towni projectionsubmentovertex projectionthe facial profile surgerythe TMJ surgeryQuestion 18 of 20 19. If an unwrapped, nonprocessed x-ray film is exposed to normal light for just a second and then processed, it ______.May still be used but will be brownMay still be used but will be a little lightMay still be used but will be a little darkWill be completely blackQuestion 19 of 20 20. Which of the following projections is the best for evaluating the maxillary sinus?Reverse Towne projectionSubmentovertex projectionWaters projectionLateral jaw projectionQuestion 20 of 20 Loading...
