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Procedures 3 > Mobile Radiography > Flashcards

Mobile Radiography Flashcards

1
Q

What type of equipment does Mobile radiography use?

A

Transportable X-ray

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2
Q

Mobile radiography is commonly performed in

A

Patient rooms
Emergency department
ICU
Surgery and recovery
Nursery and neonatal units

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3
Q

Where was Mobile X-ray first used?

A

Military

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4
Q

Mobile radiography equipment is

A

Battery operated

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5
Q

Compared to stationary units, mobile radiography is not as ______

A

Sophisticated

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6
Q

Mobile equipment vary in exposure controls and

A

Power sources

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7
Q

A typical mobile unit has controls for setting

A

kVp and mAs

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8
Q

mAs controls automatically adjust

A

mA and time

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9
Q

What does the mAs typically range at?

A

0.04 to 320

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10
Q

What does kVp typically range between?

A

40 to 130

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11
Q

What is APR

A

Anatomically programmed radiography

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12
Q

A system of preprogrammed exposure techniques settings that is organized by position and examination and set through the control panel of the radiography unit

A

APR (anatomically programmed radiography)

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13
Q

Capacitor portables are not

A

Battery powered

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14
Q

DR mobile units does what to workflow efficiency?

A

Increases

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15
Q

Mobile units with direct digital capability

A

DR mobile units

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16
Q

What type of detector does a DR mobile unit use?

A

Flat-panel

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17
Q

How does DR mobile units get the images to PACS?

A

Wirelessly transfers

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18
Q

Lower radiation doses possible with digital _____ software.

A

Post-processing

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19
Q

What are the three important technical factors that must be understood to perform optimal mobile examinations ?

A

Grid
Anode heel effect
SID

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20
Q

What type of chart is also essential to optimal mobile examinations?

A

Exposure technique

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21
Q

Where should the anode be?

A

At the head

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22
Q

Optimum performance requires grid to be

A

Level
Centered to CR
Used at recommended focal distance or radius

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23
Q

The use of a grid on an unstable surface may cause

A

“Off level” grid cutoff

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24
Q

The midline of the grid more than __ to __ inches off transversely from the CR causes “off level” grid cutoff

A

1 to 1 1/2

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25
Q

When using a grid, exposures outside of the recommended focal range may produce cutoff on the

A

Lateral margin

26
Q

The Anode heel effect causes decreased image density under the _____ side of the x-ray tube

A

Anode

27
Q

_____ SID and _____ field sizes are common in mobile

A

Short
Large

28
Q

SID should be maintained at

A

40’

29
Q

Standardized distance ensures

A

Consistent images

30
Q

If a longer SID (over 40) is used, an increase in ___ is required

A

mAs

31
Q

Using a longer SID increases the risk of

A

Motion artifact

32
Q

When should a technique chart be available?

A

For every machine

33
Q

A _____ should always be available for accurate patient measurement

A

Caliper

34
Q

Does Mobile radiography produce high or low occupational dose?

A

High

35
Q

What is the recommended minimal distance you should stand from the mobile unit?

A

6ft (2m)

36
Q

Where should you stand in comparison to the beam?

A

At a right angle (90 degrees)

37
Q

The lowest amount of scatter radiation occurs at a

A

Right angle from the primary beam

38
Q

What is the most effective radiation protection measure?

A

Distance

39
Q

What is the minimal source to skin distance?

A

12 in (30cm)

40
Q

Two types of patients in isolation

A

Those who have contagious infectious microorganisms

Those who must be protected from exposure to infectious microorganisms (reverse isolation)

41
Q

Where should the base of the mobile machine be placed for a supine position?

A

Middle of bed

42
Q

Where should the base of the mobile machine be placed for a seated upright position?

A

Foot of the bed

43
Q

Where should the base of the mobile machine be placed for a lateral and decubitus position?

A

Parallel or perpendicular to the bed

44
Q

Patient considerations when performing mobile examinations are

A

Assessment of patient condition
Patient mobility
Fractures
Interfering devices
Positioning of asepsis

45
Q

Assessment of patient condition allows necessary adaptation of procedure to ensure

A

Quality patient care and imaging outcome

46
Q

The radiographer assesses

A

Alertness
Respiration
ability to cooperate
Limitations to procedure

47
Q

Can the IR damage skin?

A

Yes

48
Q

What can be used on the IR to protect the patients skin?

A

Cloth or IR cover

49
Q

What examinations are/can be performed with mobile radiography?

A

Chest - AP
Abdomen
Pelvis
Femur
C-spine
Neonate

50
Q

For a portable AP chest, how should you position the patient?

A

Seated upright
Semi upright
Supine

51
Q

The top of the IR should be _____ for an AP chest.

A

2in above relaxed shoulder

52
Q

The CR for an AP chest should enter

A

Approximately 3 inches below jugular notch at level of T7

53
Q

What structures should be shown on an AP chest?

A

Heart
Trachea
Diaphragmatic domes
Entire lung field
Vascular markings

54
Q

For fluid levels, which side should be down?

A

Affected

55
Q

For air levels, which side should be down?

A

Unaffected

56
Q

How long should the patient lie in the lateral recumbent position before the exam for air/fluid levels

A

5 min

57
Q

Where should the CR enter for an AP abdomen?

A

Level of iliac crest or 10th rib laterally

58
Q

Where should the CR enter on a lateral decubitus abdomen?

A

2in above iliac crest

59
Q

For an AP pelvis the legs should be rotated

A

15 degrees medially if possible

60
Q

For a lateral C-spine, the CR should enter

A

Level of C4

Procedures 3 (4 decks)

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