1. Bone death in radiation seen after radiation level of20 Gy30 Gy40 Gy50 GyQuestion 1 of 20 2. Mandible in single plane is seen inAP viewPA viewLateral obliqueque OPGQuestion 2 of 20 3. the size of the periapical film used in adults is21 x 31 mmnone of the above31 x 41 mm22 x 35 mmQuestion 3 of 20 4. What is the effect on radiograph if there are scratches on intensifying screenNo effectDark spot on radiographReticulation in the radiographLight spots on radiographQuestion 4 of 20 5. all of them use non ionizing radiation exceptradiographyMRIthermographyultrasonographyQuestion 5 of 20 6. Maximum cupping artifact is seen inSpiral beam computed tomographyMulti size computed tomographyCone beam computed tomographyComputed tomographyQuestion 6 of 20 7. Normal angulation for recording a periapical radiograph of a maxillary lateral incisor:-ve 30 degrees70 degress30 degrees40 degreesQuestion 7 of 20 8. Maxillary sinus is seen inWaters viewSubmento vertexPA viewReverse Towne projectionQuestion 8 of 20 9. On a radiograph, you observe a radiolucency extending from the distal aspect of the maxillary canine to the posterior wall of the maxilla above the tuberosity. The most likely cause of this radiolucency is ____.AmeloblastomaDentigerous cystMaxillary sinusZygomatic process of the maxillaQuestion 9 of 20 10. The radiosensitivity of cells depends on ____.Degree of differentiationAll of the aboveMitotic futureMitotic activityQuestion 10 of 20 11. ossifying fibroma manifest asunilocular opacityunilocular radiolucencymultilocular radiooacitymultilocular radiolucencyQuestion 11 of 20 12. A first-year dental student helping out in the clinic for the first time repeatedly obtains x-rays of tooth #14 with a zigzagged pattern. What could have prevented the zigzagged pattern on the radiographic image?Placing the film incorrectly with the lead portion facing the coneBending the film less when placing in positionTelling the patient not to move during the exposureUsing the film only once instead of exposing it multiple timesQuestion 12 of 20 13. It is acceptable for the operator to hold the film in a patient's mouth____.If the patient or parent grants permissionIf the patient has a handicapNeverIf the patient is a childQuestion 13 of 20 14. In taking radiographs, gagging is usually caused whenThe film is held by the patientThe film is moved across the soft palateBite wings are takenThe film impinges on the floor of the mouthQuestion 14 of 20 15. the heel effect resultsin low intensity x ray beam on anode side of central rayin high intensity beam of x ray towards cathodeboth of them are truenone of the above are trueQuestion 15 of 20 16. the most common cause of light radiographs isusing an exhausted developerover developing the filmsusing low kilovoltageplacing the shielded side of the film toward the tube during exposureQuestion 16 of 20 17. In the body which atom is useful in magnetic resonance imaging(MRI)SulphurNitrogenHydrogenOxygenQuestion 17 of 20 18. In case of suspected metastasis to lymph nodes of neck,ultrasound will reveal all of the following exceptDecreased vascularityHypoechoic shadowLoss of fatty hyaline layerPresence of microcalcificationsQuestion 18 of 20 19. Fogging seen in x- ray film is seen due to all of the following reasons exceptOld filmStray radiationsImproper safe lightingGridQuestion 19 of 20 20. all of the following radioisotopes are used in systemic radionucleotide exceptstrontium-89phosphorus-32samarium-153iridium-192Question 20 of 20 Loading...
