1. The function of the filament is toConvert electrons into photonsRelease electronsRelease photonsConvert photons into electronsQuestion 1 of 20 2. All of the following cells in the body are relatively resistant to damage by radiation exceptMucosal cellsMuscle cellsNerve cellsMature boneQuestion 2 of 20 3. Most radiosensitive phase of cell cycle isG1G2S2SQuestion 3 of 20 4. Bone death in radiation seen after radiation level of50 Gy30 Gy20 Gy40 GyQuestion 4 of 20 5. The period between radiation exposure and the onset of symptoms is called theRecovery periodnone of the abovePeriod of cell injuryLatent periodQuestion 5 of 20 6. the purpose of collimating an x ray beam is toavoid delivering unnecessary radiation to the patientreduce the size of the beam to facilitate easier visualization of the central rayremove the less penetrating x ray photonsreduce exposure timeQuestion 6 of 20 7. If an exposed radiograph is too dark after proper development, you should ____.Place it back in the fixerDecrease exposure timePlace it back in the developerDecrease development timeQuestion 7 of 20 8. Beaten metal appearance of skull from insideApert syndromeRicketsMultiple myelomaCrouzon syndromeQuestion 8 of 20 9. digital radiography differs from conventional inno hard copy is formedrays other than x rays are usedradiation receptors are differentx rays not usedQuestion 9 of 20 10. Increased caries incidence secondary to radiation therapy occurs because of the effect of radiation onMaxillary sinusParotid glandTongueMandibleQuestion 10 of 20 11. Mandible in single plane is seen inLateral obliqueque AP viewOPGPA viewQuestion 11 of 20 12. in which one of the following condition sialography is contraindicatedductal calculuschronic parotitisacute parotitisrecurrent parotitisQuestion 12 of 20 13. 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 carbonateHydroquinonePotassium bromideSodium sulfiteQuestion 13 of 20 14. Maximum cupping artifact is seen inSpiral beam computed tomographyCone beam computed tomographyComputed tomographyMulti size computed tomographyQuestion 14 of 20 15. if multiple myelpma is suspected from a patients history and IOPA, which of the following radiographs should be taken to confirm the diagnosislateral skullposterior anterior viewanterior posterior viewlateral oblique viewQuestion 15 of 20 16. What is the "critical target" for radiation damageGolgi apparatusenzymeslysosomeschromosomesQuestion 16 of 20 17. Clearing agent in fixer isSodium sulphatePotassium bromideAmmonium thiosulphateAcetic acidQuestion 17 of 20 18. which of the following is the least radiosensitive tissuesRBC,muscle cell,nerve cellconnective tissue cell,endothelial cell,muscle cellmuscle cells,nerve cells,bone cellsWBC,bone cells,epithelial cellsQuestion 18 of 20 19. ALARA principle stands forAs low as reasonably achievableAs lower as reasonably achievableAs lower are reasonably achievableAs low are resonably achievableQuestion 19 of 20 20. The radiolucent portions of the images on a processed dental x-ray film are made up of ____.Microscopic grains of silver halideA gelatin on a cellulose acetate baseMicroscopic grains of metallic silverUnexposed silver bromideQuestion 20 of 20 Loading...
