Chapter 35 IP&E Test

6. Radiographers should move _____ away from the patient prior to making an exposure. a. 2 feet b. 6 feet c. 1 foot d. none of the above

B. 6 feet

14. During optimal mobile radiography of the chest, the recommended SID is _____ inches. a. 72 b. 36 c. 56 d. 40

A. 72

15. Proper tube-grid alignment is important during ____ radiography a. all of the above b. mobile c. stationary d. protable

A. All of the above

7. During mobile radiography, it is the radiographer's responsibility to protect a. all of the above b. the public c. the patient d. other health professionals

A. All of the above

12. Output from battery-operated units is essentially a. high frequency b. single-phase, fully rectified c. single-phase unrectified d. low frequency

A. High frequency

32. Matching: preferred radiographic grid characteristics for mobile radiography a. low ratio and high frequency b. capacitor discharge c. rechargeable batteries d. 110-120 volts e. tethered detector f. Picker Corporation g. CVP line h. high frequency output i. dead man switch j. 56 inches

A. Low ratio and high frequency

21. Batteries used in mobile radiographic machines a. recharge using 220-240 V AC power b. are rechargeable c. all of the above d. provide power for mobility only

B. Are rechargeable

33. Matching: unpopular and nearly obsolete type of generator for mobile units a. low ratio and high frequency b. capacitor discharge c. rechargeable batteries d. 110-120 volts e. tethered detector f. Picker Corporation g. CVP line h. high frequency output i. dead man switch j. 56 inches

B. Capacitor discharge

1. Mobile examinations are difficult to accomplish because a. stationary equipment is more reliable b. exam conditions can vary widely c. mobile equipment exposure techniques are dependent upon hospital power d. most patients are unconscious

B. Exam conditions can vary widely

4. Before entering a surgical suite, who must be consulted? a. the surgical technician b. the attending physician c. the unit receptionist d. any of the above

B. The attending physician

23. If a chest radiograph requires 4 mAs at 72", the new mAs to use at 56" would be a. 3 mAs b. 2.0 mAs c. 2.4 mAs d. 1.5 mAs

C. 2.4 mAs

22. If the radiographer is unable to achieve a 72" SID during mobile chest radiography, an alternative distance to use is a. 40" b. 60" c. 56" d. 48"

C. 56"

19. Modern mobile radiographic units posses a. remote exposure controls b. a cabinet for film cassette storage c. a flat panel detector for image review d. disposable, single-use batteries

C. A flat panel detector for image review

26. As you prepare to complete a portable chest radiograph on a patient with possible congestive heart failure, you notice several tubes and lines going into the patient. Prior to making the exposure, you should a. both a and b b. adjust your kVp to penetrate the opacity of the lines c. ask a nurse to move the lines from the image area d. move the lines out of the image area and complete the exam, as time is critical with this type of patient

C. Ask a nurse to move the lines from the image area

25. All of the following features are essential to a mobile radiographic unit EXCEPT a. clear display of exposure factors b. dead-man type exposure switch c. automatic exposure control with single field d. expandable 6-foot exposure cord

C. Automatic exposure control with single field

11. The more advanced, full-power mobile units use _____ energy for a power supply. a. solar b. alternating current c. battery d. thermal

C. Battery

24. The preferred method for demonstrating air fluid levels during mobile radiography is to make sure that the a. patient is sitting fully erect b. x-ray beam is parallel to the floor c. both B and C d. SID is 60"

C. Both B and C

20. A common cause for repeat examinations in mobile radiography is due to a. angulation of grids and grid-cutoff b. equipment reliability c. inaccurate SID measurements d. low image contrast

C. Inaccurate SID measurements

17. With current, state-of-the-art portable units, a. kVp is used to compensate for insufficient mAs b. higher ration grids are necessary c. the batteries provide power for exposures and travel d. it is safe to stand behind the unit for protection

C. The batteries provide power for exposures and travel

5. When it is determined that air-fluid level demonstration is a priority, _____ projection(s) may be required for _____. a. one; a normal projection of the chest b. two; one AP and one lateral projection c. two; air-fluid levels and a normal projection of the chest d. one; air-fluid levels

C. Two; air-fluid levels and a normal projection of the chest

29. Matching: typical power source for recharging batteries a. low ratio and high frequency b. capacitor discharge c. rechargeable batteries d. 110-120 volts e. tethered detector f. Picker Corporation g. CVP line h. high frequency output i. dead man switch j. 56 inches

D. 110-120 volts

16. Which grid type would permit wide exposure and centering latitiude and would therefore be preferred for mobile radiography? a. 10:1 b. 8:1 c. 12:1 d. 6:1

D. 6:1

2. Mobile examinations may require a. special adaptations of routine projections b. innovative technical factor considerations c. imaginative equipment manipulation d. all of the above

D. All of the above

3. In surgery or in the emergency unit, which situation should be considered? a. The stress of performing in a high-tension environment b. the presence of additional critical equipment c. limitations due to aseptic conditions d. all of the above

D. All of the above

8. During mobile radiography, it is the radiographer's responsibility to request that _____ leaves the immediate area prior to exposure. a. health professionals b. physicians c. family members d. all of the above

D. All of the above

18. For mobile radiography, radiographic grids should have a a. cross-hatch design b. low ratio and low frequency c. high ratio and low frequency d. low ratio and high frequency

D. Low ratio and high frequency

10. During mobile radiography, the radiographer must achieve maximum distance primarily from the a. image receptor b. mobile unit c. x-ray tube d. patient

D. Patient

13. All of the following are true of capacitor-dishcarge units EXCEPT: a. The final kVp is variable as a funciton of exposure time b. They function with low-power supply sources c. Theyare quite popular due to their small size and weight as well as output d. Their output is a function of large capacitors

D. Their output is a function of large capacitors

9. How many lead aprons should be carried to a mobile radiographic examination? a. none; lead aprons are not necessary b. one for the radiographer c. one for the patient d. two; one for the patient and one for the radiographer

D. Two; one for the patient and one for the radiographer

27. Matching: digital receptor with electrical cord a. low ratio and high frequency b. capacitor discharge c. rechargeable batteries d. 110-120 volts e. tethered detector f. Picker Corporation g. CVP line h. high frequency output i. dead man switch j. 56 inches

E. Tethered detector

31. Matching: first to develop a portable unit a. low ratio and high frequency b. capacitor discharge c. rechargeable batteries d. 110-120 volts e. tethered detector f. Picker Corporation g. CVP line h. high frequency output i. dead man switch j. 56 inches

F. Picker Corporation

34. Matching: should be repositioned after consulting a nurse or physician a. low ratio and high frequency b. capacitor discharge c. rechargeable batteries d. 110-120 volts e. tethered detector f. Picker Corporation g. CVP line h. high frequency output i. dead man switch j. 56 inches

G. CVP line

28. Matching: x-ray beam quality with current-day portable units a. low ratio and high frequency b. capacitor discharge c. rechargeable batteries d. 110-120 volts e. tethered detector f. Picker Corporation g. CVP line h. high frequency output i. dead man switch j. 56 inches

H. High frequency output

30. Matching: convenient SID for mobile radiography a. low ratio and high frequency b. capacitor discharge c. rechargeable batteries d. 110-120 volts e. tethered detector f. Picker Corporation g. CVP line h. high frequency output i. dead man switch j. 56 inches

J. 56"