Deck 35: Mobile Radiography

Question 1

During optimal mobile radiography of the chest, the recommended SID is ____ inches.

A)72
B)56
C)40
D)36

Answer 1

72

Question 2

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

Answer 2

two: one for the patient and one for the radiographer

Question 3

The more advanced, full-power mobile units use ____ energy for a power supply.

A)solar
B)battery
C)thermal
D)alternating current

Answer 3

battery

Question 4

Modern mobile radiographic units possess

A)a flat panel detector for image review.
B)disposable, single-use batteries.
C)a cabinet for film cassette storage.
D)remote exposure controls.

Question 5

Proper tube-grid alignment is important during ____ radiography.

A)mobile
B)stationary
C)portable
D)all of the above

Question 6

For mobile radiography, radiographic grids should have a

A)high ratio and low frequency.
B)low ratio and low frequency.
C)cross-hatch design.
D)low ratio and high frequency.

Question 7

During mobile radiography, it is the radiographer's responsibility to protect

A)the patient.
B)other health professionals.
C)the public.
D)all of the above

Question 8

During mobile radiography, the radiographer must achieve maximum distance primarily from the

A)patient.
B)mobile unit.
C)image receptor.
D)x-ray tube.

Question 9

In surgery or in the emergency unit, which situation should be considered?

A)the stress of performing in a high-tension environment
B)limitations due to aseptic conditions
C)the presence of additional critical equipment
D)all of the above

Question 10

During mobile radiography, it is the radiographer's responsibility to request that ____ leave the immediate area prior to exposure.

A)physicians
B)family members
C)health professionals
D)all of the above

Question 11

Which grid type would permit wide exposure and centering latitude and would therefore be preferred for mobile radiography?

A)6:1
B)8:1
C)10:1
D)12:1

Question 12

When it is determined that air-fluid level demonstration is a priority, ____ projection(s) may be required for ____.

A)one; air-fluid levels
B)one; a normal projection of the chest
C)two; one AP and one lateral projection
D)two; air-fluid levels and a normal projection of the chest

Question 13

A common cause for repeat examinations in mobile radiography is due to

A)equipment reliability.
B)angulation of grids and grid-off.
C)inaccurate SID measurements.
D)low image contrast.

Question 14

All of the following are true of capacitor-discharge units EXCEPT:

A)Their output is a function of large capacitors.
B)They are quite popular due to their small size and weight as well as output.
C)They function with low-power supply sources.
D)The final kVp is variable as a function of exposure time.

Question 15

Mobile examinations are difficult to accomplish because

A)mobile equipment exposure techniques are dependent upon hospital power.
B)stationary equipment is more reliable.
C)exam conditions can vary widely.
D)most patients are unconscious.

Question 16

Radiographers should move ____ away from the patient prior to making an exposure.

A)1 foot
B)2 feet
C)2 yards
D)none of the above

Question 17

Output from battery-operated units is essentially

A)single-phase unrectified.
B)single-phase, fully rectified.
C)three-phase, 6 pulse.
D)high frequency.

Question 18

Mobile examinations may require

A)special adaptations of routine projections.
B)imaginative equipment manipulation.
C)innovative technical factor considerations.
D)all of the above

Question 19

With current, state-of-the-art portable units,

A)kVp is used to compensate for insufficient mAs.
B)it is safe to stand behind the unit for protection.
C)the batteries provide power for exposures and travel.
D)higher ratio grids are necessary.

Question 20

Before entering a surgical suite, who must be consulted?

A)the unit receptionist
B)the attending physician
C)the surgical technician
D)any of the above

Question 21

Match the following items with the correct statement as they relate to mobile radiography.
unpopular and nearly obsolete type of generator for mobile units

A)110-120 volts
B)capacitor discharge
C)Picker Corporation
D)high frequency output
E)56 inches
F)rechargeable batteries
G)tethered detector
H)low ratio and high frequency
I)dead man switch
J)CVP line

Question 22

Match the following items with the correct statement as they relate to mobile radiography.
x-ray beam quality with current-day portable units

A)110-120 volts
B)capacitor discharge
C)Picker Corporation
D)high frequency output
E)56 inches
F)rechargeable batteries
G)tethered detector
H)low ratio and high frequency
I)dead man switch
J)CVP line

Question 23

Match the following items with the correct statement as they relate to mobile radiography.
digital receptor with electrical cord

A)110-120 volts
B)capacitor discharge
C)Picker Corporation
D)high frequency output
E)56 inches
F)rechargeable batteries
G)tethered detector
H)low ratio and high frequency
I)dead man switch
J)CVP line

Question 24

If a chest radiograph requires 4 mAs at 72", the new mAs to use at 56" would be

A)3 mAs.
B)2.4 mAs.
C)2.0 mAs.
D)1.5 mAs.

Question 25

Match the following items with the correct statement as they relate to mobile radiography.
should be repositioned after consulting a nurse or physician

A)110-120 volts
B)capacitor discharge
C)Picker Corporation
D)high frequency output
E)56 inches
F)rechargeable batteries
G)tethered detector
H)low ratio and high frequency
I)dead man switch
J)CVP line

Question 26

If the radiographer is unable to achieve a 72" SID during mobile chest radiography, an alternative distance to use is

A)40".
B)48".
C)56".
D)60".

Question 27

Batteries used in mobile radiographic machines

A)are rechargeable.
B)provide power for mobility only.
C)recharge using 220-240 V AC power.
D)all of the above

Question 28

Match the following items with the correct statement as they relate to mobile radiography.
convenient SID for mobile radiography

A)110-120 volts
B)capacitor discharge
C)Picker Corporation
D)high frequency output
E)56 inches
F)rechargeable batteries
G)tethered detector
H)low ratio and high frequency
I)dead man switch
J)CVP line

Question 29

All of the following features are essential to a mobile radiographic unit EXCEPT

A)expandable 6-foot exposure cord.
B)automatic exposure control with single field.
C)dead-man type exposure switch.
D)clear display of exposure factors.

Question 30

Match the following items with the correct statement as they relate to mobile radiography.
first to develop a portable unit

A)110-120 volts
B)capacitor discharge
C)Picker Corporation
D)high frequency output
E)56 inches
F)rechargeable batteries
G)tethered detector
H)low ratio and high frequency
I)dead man switch
J)CVP line

Question 31

The preferred method for demonstrating air fluid levels during mobile radiography is to make sure that the

A)SID is 60".
B)patient is sitting fully erect.
C)x-ray beam is perpendicular to the receptor.
D)both b and c

Question 32

Match the following items with the correct statement as they relate to mobile radiography.
typical power source for recharging batteries

A)110-120 volts
B)capacitor discharge
C)Picker Corporation
D)high frequency output
E)56 inches
F)rechargeable batteries
G)tethered detector
H)low ratio and high frequency
I)dead man switch
J)CVP line

Question 33

Match the following items with the correct statement as they relate to mobile radiography.
preferred radiographic grid characteristics for mobile radiography

A)110-120 volts
B)capacitor discharge
C)Picker Corporation
D)high frequency output
E)56 inches
F)rechargeable batteries
G)tethered detector
H)low ratio and high frequency
I)dead man switch
J)CVP line

Question 34

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)adjust your kVp to penetrate the opacity of the lines.
B)ask a nurse to move the lines from the image area.
C)move the lines out of the image area and complete the exam, as time is critical with this type of patient.
D)both a and b