RADIATION HEALTH AND SAFETY TEST 1 WITH COMPLETE SOLUTIONS

RadiationHealthAndSafetyTest1WithCompleteSolutions v v v v v v v v




1. Unused developer solution could be harmful to you because
vb vb vb vb vb vb vb vb vb .

a. it has high pH
vb vb vb




b. it has low pH
vb vb vb




c. it is a skin irritant
vb vb vb vb




d. it is an inhalation hazard: it has high pH
vb vb vb vb vb vb vb vb




2. Infection control practices during processing involve which of the follow-
vb vb vb vb vb vb vb vb vb




ing?
vb




a. transport
b. assembly of beam alignment devices vb vb vb vb




c. checking kV settings vb vb




d. steadying the tubehead: transport vb vb vb




3. Which of the following is a true statement regarding pregnant patients and
vb vb vb vb vb vb vb vb vb vb vb




exposure to radiation?
vb vb vb




a. x ray films are not exposed until the second trimester
vb vb vb vb vb vb vb vb vb




b. ADA guidelines recommend postponing x ray images during pregnancy
vb vb vb vb vb vb vb vb




c. lead aprons prevent exposure to the fetus
vb vb vb vb vb vb




d. exposure time is decreased for pregnant patients:lead aprons prevent expo-
vb vb vb vb vb vb vb vb vb vb




sure to the fetus
vb vb vb vb




4. Divergence of the x ray beam is reduced by using . vb vb vb vb vb vb vb vb vb vb




a. the short cone technique
vb vb vb




b. the paralleling technique
vb vb




c. the bisecting technique
vb vb




d. an 8-inch PID: the paralleling technique
vb vb vb vb vb





vb vb

,5. The maximum permissible dose (MPD) for occupationally exposed workers is:
vb vb vb vb vb vb vb vb vb




a. 0.005 Sv/yr vb




b. 0.05 Sv/yr vb




c. 0.5 Sv/yr
vb




d. 5.0 Sv/yr: 0.05 Sv/yr
vb vb vb




6. Which of the following represents the optimum desired occupational dose?
vb vb vb vb vb vb vb vb vb




a. 0 rem/yr
vb




b.0.01 rem/yr





vb vb

, c. 0.001 rem/yr
vb vb




d. 0.1 rem/yr: 0 rem/yr
vb vb vb vb




7. Which of the following would be an acceptable practice for an operator of
vb vb vb vb vb vb vb vb vb vb vb vb




dental x ray equipment?
vb vb vb vb




a. wearing a film badge only at work vb vb vb vb vb vb




b. holding the film while fully draped with a lead apron vb vb vb vb vb vb vb vb vb




c. standing behind the patient, 6 feet away vb vb vb vb vb vb




d. holding the tubehead to prevent drifting: wearing a film badge only at work
vb vb vb vb vb vb vb vb vb vb vb vb




8. Which of the following does a film badge monitor? vb vb vb vb vb vb vb vb




a. natural radiation exposures vb vb




b. patient exposures vb




c. radiographer's daily occupational radiation exposures vb vb vb vb




d. total office staff radiation exposures: radiographer's daily occupational radia-
vb vb vb vb vb vb vb vb




tion exposures
vb vb




9. Which of the following is an acceptable emission from the tubehead?
vb vb vb vb vb vb vb vb vb vb




a. scatter radiation vb




b. primary radiation vb




c. leakage radiation vb




d. secondary application: primary radiation vb vb vb




10. Which of the following is an accurate statement about safe operating
vb vb vb vb vb vb vb vb vb vb




procedures?
vb




a. pregnant operators must not expose dental images vb vb vb vb vb vb




b. dosimeters are mandatory for operators vb vb vb vb




c. all dental staff members should wear dosimeters
vb vb vb vb vb vb




d. ALARA applies to patients but not operators: all dental staff members should
vb vb vb vb vb vb vb vb vb vb vb




wear dosimeters
vb vb




11. You have a new dental x ray machine.The length of the PID is changing
vb vb vb vb vb vb vb b
v vb vb vb vb vb vb




from 16 to 8 inches. How does this affect the intensity of the x ray beam?
vb vb vb vb vb vb vb vb vb vb vb vb vb vb vb vb




What adjustment will you need to make to keep the density of your images
vb vb vb vb vb vb vb vb vb vb vb vb vb vb




consistent?
vb




a. the resultant beam would be one half as intense.You will need to increase the
vb vb vb vb vb vb vb vb b
v vb vb vb vb vb




exposure time
vb vb




b. the resultant beam will be one quarter as intense.You will need to increase the
vb vb vb vb vb vb vb vb b
v vb vb vb vb vb




exposure time.
vb vb





vb vb