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Hannah RAD III > Mobile Imaging Worksheet > Flashcards

Mobile Imaging Worksheet Flashcards

1
Q

list the common areas in which mobile radiography is performed

A

mobile radiography is commonly performed in patient rooms, emergency rooms, intensive care units, surgery and recovery rooms, as well as nursery and neonatal units.

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2
Q

what technical controls are typically available on mobile equipment?

A

kVp and mAs

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3
Q

(T) what is the typical range of milliampere-seconds (mAs) available on mobile x-ray manchines?

A

typical range is 0.04 to 320 mAs

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4
Q

(T) what is typical range of kilovolt peak (kVp) available on mobile x-ray machines?

A

Typical range is 40 to 130 kVp

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5
Q

what is the range of total power for most mobile units? how does this compare to stationary rad equipment?

A

The total power range for mobile units is 15 to 25 kilowatts (kW), which is much lower than stationary units, which can have as much as 150kW

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6
Q

(T) what three technical matters must be understood to be competent in mobile radiography?

A

the grid, anode heel effect, and source-to-image receptor distance (SID)

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7
Q

(T) for optimal mobile images, a grid must be:

A
  • Level
  • Center to the central ray
  • Used at the recommended focal distance or radius
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8
Q

anode heel effect is more pronounced when using short__________, larger __________ and small__________

A

SID; field sizes; anode angles

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9
Q

where should the cathode be positioned when performing a femur exam with a mobile x-ray machine?

A

At the proximal femur

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10
Q

what is the preferred source-to-image-receptor distance (SID) for mobile examination? why?

A

40 inches (102 cm); the mA limitations of a mobile unit necessitate longer exposure times when the SID exceeds 40 inches (102cm)

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11
Q

True or False. Mobile rad procedures some of the highest occupational radiation exposures for radiographers.

A

True

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12
Q

radiographers performing mobile exam should wear a ___________ for proper radiation protection.

A

Lead apron

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13
Q

the single most effective means of radiations protection is:

A

Maximum distance from the x-ray source

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14
Q

what is the recommmended minimum distance between the tech and the x-ray tube?

A

6 feet

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15
Q

Cicle the five clinical situations in which gonadal shielding should be provided

A

1-mobile exam on a child
2-mobile chest exam on a 28 year old female in an intensive care unit
3-emergency department (ED) patient requests
4-cross-table lateral lumbar spine image performed with a mobile unit on a 22 year old male in the ED
5-routine hand exam on a 30 year old patient

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16
Q

what two type of patients are often cared for in isolation units?

A

1-Patients who have infectious microorganisms that could be spread to health care workers and visitors.
2-Patients who need protection from potentially lethal microorganisms that may be carried by health care workers and visitors

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17
Q

because of the confidentiality of patient records, a tech may not know the specific diease of a patient in an isolation unit. therefore all patient should be handled using__________

A

univeral precautions

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18
Q

which protective apparel should be worn when performing a mobile exam on a patient in strict isolation?

A

mask, gown, and gloves

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19
Q

what should be done to protect the image receptor (IR) when performing a mobile exam on a patient isolated with drainage secretion precautions?

A

The IR should be placed in a clear, impermeable cover

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20
Q

what should be done to mobile equipment after performing an exam on a patient in isolation unit?

A

All equipment that touched the patient or the patient’s bed must be wiped with a disinfectant according to appropriate aseptic technique

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21
Q

Start Section 2: Mobile Rad Exams:

Which are preliminary steps for the tech before peforming mobile radiography?

A

1-gather all necessary eqipment
2-annouce your presence to the nursing staff
3-confirm that you have the correct patient
4-introduce yourself to patient and family
5-explain the exam to the patient
6-observe medical equipment in room and move, if necessary.

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22
Q

Question 22-26 (section 2: 2-6) are for the AP projection of the chest with the patient in an upright or supine position:

Which position would be best to obtain a mobile AP chest radiograph on a conscious and alert patient?

A

Sitting as upright as is tolerable by the patient

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23
Q

the IR should be placed about ______ above the shoulders for the AP projection of the chest performed with a mobile unit

A

2 inches (5cm)

24
Q

The central ray should be directed _________ to the ___________ on the mobile AP projection of the chest.

A

Perpendicular; long axis of the sternum

25
Q

the central ray should enter the patient about _______ below the ________ on the mobile AP projection of the chest

A

3 inches (8cm); jugular notch

26
Q

What device should be used if the kVp is above 90 for a mobile computed radiography AP projection of the chest?

A

A grid

27
Q

Questions 27-30 (section 2: 7-10) are for the AP projection of the chest with the patient in a right or left lateral decubitus position

when using the lateral decubtus position for a mobile chest exam, which position would be used if fluid were suspected in the left lung?

A

Left lateral decubitus position

28
Q

Describe the proper patient position to prevent rotation of the anatomy in an image of a lateral decubitus position

A

The coronal plane passing throught the shoulders and hips should be vertical

29
Q

what pathologic conditions would be demonstrated by the right lateral decubitus position?

A

A pneumothorax (free are levels) in the left lung or fluid in the right lung

30
Q

True or False. Proper image ID should be demonstrated to indicate the decubitus position was used.

A

True

31
Q

Questions 31-35 (section 2: 11-15) pertain [are fore] to the AP projection of the abdomen with the patient in a supine position:

The grid IR should be centered at the level of______

A

Iliac crests

32
Q

if the emphasis is on the upper abdomen, how does the grid IR centered change?

A

2 inches (5cm) above the iliac crest, or high enough to include the diaphragm on the image

33
Q

what anatomy must be visualized on the radiograph if the lower abdomen is of primary interest?

A

Symphysis pubis

34
Q

The _______ must be seen at the top of the radiograph if the upper abdomen is of primary interest

A

Diagphragm

35
Q

what error occur if the patient is not in a true supine position, but the central ray is centered as if he/she is properly positioned?

A

Grid cutoff

36
Q

Questions 36-38(section 2: 16-18) pertain to [are fore] the AP projection of the abdomen with the patient in the left lateral decubitus position:

How does one check for rotation on a radiograph of the abdomen taken in a left lateral decubitus position?

A

Look for symmetric appearance of the vertebral column and iliac wings.

37
Q

How long should the patient be in the left lateral decubitus position before exposure? Why?

A

5 minutes; to allow air to rise and fluid levels to settle.

38
Q

The center of the grid IR should be centered ______ to include the ________ on the image

A

2 inches (5cm) above the iliac crests; diagphragm

39
Q

Questions 39-41(section 2:19-21) pertain to the AP projection of the pelvis:

Where should the center of the grid IR be placed relative to the patient?

A

Midway between the anterior superior iliac spine (ASIS) and the pubic syphysis, or about 2 inches (5cm) inferior to the ASIS and 2 inches (5cm) superior to the pubic symphysis.

40
Q

What possible contraindications prohibit proper positioning of the lower limbs for this exam?

A

Fractured hip or pelvis

41
Q

What is the rationale for the position of the lower limbs for this exam?

A

to place the greater trochanters in prfile and eliminate foreshortening of the femoral necks

42
Q

Question 42-45(section 2: 22-25) pertain to the AP and lateral projections of the femur:

The grid IR should be placed ______ to the plane of the femoral coudyles for the AP projection

A

Parallel

43
Q

List the anatomy that must be included on a mobile femur exam

A

Distal 2/3; of femur and the knee joint

44
Q

when performing the mediolateral projection of the femur, the unaffected limb should be:

A

Elevated and supported at a nearly vertical position

45
Q

when performing the lateromedial projection of the femur, the grid IR is placed:

A
  • Perpendicular to the epicondylar plane

- Between the patient’s legs

46
Q

Questions 46-48 (section 2: 26-28) pertain to the lateral projection of the cervical spine with the patient in the dorsal decubitus position:

The top of the grid IR should be placed ________

A

1 inch (2.5 cm) above the external acoustic meatus

47
Q

Proper alignment of the central ray with the grid IR will prevent ________________

A

Grid cutoff

48
Q

What anatomic structures must be demonstrated on the image?

A

Seven cervical vertebrae, including the base of the skull and the soft tissues surrounding the neck

49
Q

Questions 49-52 (section 2: 29-32) pertain to procedures performed with neonates, with the AP projection of the chest and abdomen:

Chest and abdomen combined projections are typically ordered on:

A

Premature infants

50
Q

Who should hold the infant during the rad exam?

A

A nurse wearing a lead apron

51
Q

True or false. A covering should be placed over the Ir if it is placed directly under the infant.

A

True

52
Q

explain the risks of straightening the head of a neonate with an endotracheal tube.

A

Straightening the head and neck of a neonatal infan may advance the endotracheal tube too far into the trachea.

53
Q

Questions 53-55 (section 2: 33-35) pertain to procedures performed with neonates, with the lateral projection of a patient in the dorsal decubitus position:

True of false. The infant does not need to be elevated for the dorsal decubitus position

A

False (the infant must be elevated on a radiolucent support to include all pertinent anatomy on the image)

54
Q

what anatomy is of special interest in this position?

A

the constophrenic angles of the lungs

55
Q

what pathology, if present, can be demonstrated in this position?

A

Air-fluid levels

Hannah RAD III (25 decks)

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