Round Two – Lightning Round• Round two consists of 30 questions

• Each individual team will read the questions and possible answers as they appear on the screen. No moderators and no individual team judges will preside in round two.

• A team member will record the team’s selection of an answer on the round two score sheet.

• The length of time the question/answer which appears will vary, depending on the length of the question and possible answer. A countdown timer will appear on the screen that has been calculated and adjusted according to the question/answer length.

• Slides will not be reviewed or repeated until the end of the round two, after all of the4 teams have remitted their answer sheets to the Master Judges.

1.Which of the following would not affect the patient dose?

• a. focal spot size

• b. mAs

• c. kVp

• d. filtration

2.What projection/position of the elbow best demonstrates the olecranon process?

• a. lateral

• b. AP

• c. medial oblique

• d. lateral oblique

3. What is the normal rotational speed of the anode in the general purpose x-ray tube?

• a. 1,000 - 2,000 rpm

• b. 300 - 400 rpm

• c. 3,000 – 4,000 rpm

• d. 10,000 – 20,000 rpm

4. Which of the following intensifying screen relative speeds would produce the highest patient dose?

• a. 40

• b. 100

• c. 200

• d. 400

5. At what temperature does an x-ray tube filament exhibit significant thermionic emission?

• a. 400 º C

• b. 4,000 º C

• c. 2,200 º C

• d. 7,000 º C

6. What term describes the number of electrons in the outermost shell of an atom?

• a. Z - number

• b. atomic mass

• c. valence

• d. ionization

7. Which formula solves for voltage?

• a. V= I/R

• b. V= I x R

• c. V = I x V

• d. V = R/I

8. Approximately how much should the knee be flexed for lateral projection?

• a. 5 º

• b. 15 º

• c. 25 º

• d. 55 º

9. What is the proper position of hand for an AP elbow?

• a. pronated

• b. supinated

• c. lateral

• d. lateral (external) oblique

10. What is the largest foramina in the body?

• a. foramen magnum

• b. obturator foramen

• c. foramen ovale

• d. foramen spinosum

11. Which of the following structures is enclosed within a diagnostic x-ray tube cathode assembly focusing cup?

• a. focal track

• b. filament

• c. rotor

• d. stator

12. Which of the following filtrations would result in the highest entrance skin exposure to a patient?

• a. 0.5 mm Al

• b. 1.5 mm Al

• c. 2.5 mm Al

• d. 4.5 mm Al

13. Who can diagnose from a radiograph?

• a. radiographer

• b. nurse

• c. doctor

• d. all of the above

14. Which of the following is the primary concern during respiratory isolation procedures?

• a. blood

• b. feces

• c. airborne droplets

• d. semen

15. Which bone/s form acetabulum?

• a. ilium

• b. ischium

• c. pubis

• d. all of the above

16. Which of the following will decrease artifact caused by patient motion?

• a. increased time

• b. increased mA

• c. decreased kVp

• d. increased OID

17. Which of the following substances is the LEAST dense?

• a. fat

• b. muscle

• c. cartilage

• d. bone

18. Which of the following radiation types is the most penetrating in the soft tissue?

• a. alpha

• b. beta minus

• c. beta plus

• d. gamma

19. Which of the following affects the average energy of the x-ray beam?

• a. mA

• b. time

• c. mAs

• d. kVp

20. What term describes the electron ejected from an atom during Compton interaction?

• a. photoelectron

• b. auger electron

• c. recoil electron

• d. cascade

21. Which of the following would increase the recorded detail?

• a. increased FSS

• b. increased OID

• c. decreased SID

• d. increased SID

22. In what position is the patient when the x-ray table is inclined with the patient’s head slightly lower than the body?

• a. Fowler’s

• b. Sim’s

• c. decubitus

• d. trandelenburg

23. Which of the following articulates with the superior facet of the os calcis?

• a. cuboid

• b. navicular

• c. astragalus

• d. third cuneiform

24. Which of the following affects the average energy of the x-ray beam?

• a. mA

• b. time

• c. filament temperature

• d. kVp

25. Which of the following units represents radiation exposure as measured in air?

• a. rem

• b. rad

• c. gray

• d. roentgen

26. What is the most acceptable period for reporting film badge reports?

• a. daily

• b. weekly

• c. monthly

• d. semi-annualy

27. Which of the following has the greatest effect on the recorded detail?

• a. mAs

• b. kVp

• c. anode target angle

• d. FSS

28. Where is an apical pulse taken?

• a. over the heart

• b. at the foot (dorsalis pedis)

• c. over the carotid artery

• d. at the popliteal area

29. Which of the following forms the medial end of the clavicle?

• a. acromion process

• b. ac joint

• c. coronoid process

• d. sternoclavicular joint

30. What condition/s would cause static discharge artifact on a film?

• a. high humidity

• b. low humidity

• c. high temperature

• d. low temperature