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X-ray Positioning > Final > Flashcards

Final Flashcards

1
Q

For every five degrees of tube tilt, the tube should be moved towards the bucky

A

1in

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2
Q

The central ray of the AP thoracic is always directed to:

A

Level of T6

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3
Q

The “ten day rule” for females of child bearing age refers to performing non- emergency abdominal-pelvic x-ray ______

A

during the 10 days after the onset of menstration

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4
Q

Where is the central ray for vertex?

A

ALL OF THE ABOVE

a. C1
b. Centre of film
c. Centre head

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5
Q

The theoretical maximum energy of any photon in an x-ray beam is equal to which of the following?

A

the kVp set on the console

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6
Q

Which of the following is in the correct order from the most radiopaque to the least

A

Metal, Bone, Water, Fat, Air

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7
Q

To maintain constant radiographic density on a film, an increase of 15% in kVp should be accompanied by:

A

Decreasing the mAs by 1/2

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8
Q

The Intensifying screen is located:

A

In the cassette

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9
Q

Which of the following is NOT a radiation protection device

A

Grid

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10
Q

scatter increases on radiograph when

A

kvp is increased

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11
Q

the feet must internally rotated 15 degrees on the AP lumbo[pelvic projection to achieve which of the following

A

True AP projection of the proximal femur and femoral neck

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12
Q

The function of a filter is to ____

A

remove soft x-rays

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13
Q

A definition of radiographic contrast would be the _____?

A

Tonal relationship between one density and another

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14
Q

Of the following, which type of radiation is the major constituent (the larger portion) emitted form the target?

A

Bremsstrahlung Radiation

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15
Q

The lateral sacrum and coccyx are often taken together as one view, the AP projections, however, must be taken separately as:

A

the Tube angles are different

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16
Q

The principal electrostatic law implies that?

A

an electron will repel an electron

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17
Q

.With all other factors unchanged, if OID is reduced, image magnification will be ____ a. distortionally increases

A

directly decreased

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18
Q

Which of the following interaction between x-ray photons and matter make the most significant contribution to patient does?

A

photoelectric effect

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19
Q

To determine if the patient is probably a male on the AP pelvis view:

A

the angle below the symphysis pubis is acute

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20
Q

.In order to best visualize the thoracic vertebrae of a patient with a significant scoliosis:

A

The convexity should be closest to the film on the lateral view

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21
Q

Two reasons why proper collimation is important are”:

A

It increases contrast and decreases patient exposure

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22
Q

The central ray of the L5/S1, Sacrum, coccyx in the AP projection should be:

A

Be perpendicular to the plane of the object to be radiographed

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23
Q

.On the lateral sacrum view, the tube angle is

A

No tube tilt

24
Q

This view is a good one for ruling out spondylolisthesis:

A

L5/S1 spot lateral

25
Q

the technical factor controls the quality of the photons in the beam:

A

mAs

26
Q

The zygapophyseal joints in the cervical spine are best visualized on this projection

A

Lateral Cervical

27
Q

The zygapophyseal joints in the cervical spine are best visualized on this projection

A

Lateral Cervical

28
Q

Angle of the Jaw (Gonion)

A

C3

29
Q

Vertebral Prominens

A

C7

30
Q

Episternal Notch

A

T2-T3

31
Q

Umbilicus

A

L3-L4

32
Q

thyroid cartilage

A

C5

33
Q

PSIS

A

S2

34
Q

inferior angle of scapular

A

T6

35
Q

the major advantage of taking an AP lumbopelvic view PA on a large patient is

A

to achieve more uniform radiographic density by compression

36
Q

preferred to take the flexion/extension projections at the same SID as the lateral cervical because

A

the is better comparison of structures size from film to flim

37
Q

the purpose of the swimmers view is to visualize

A

C6-T2

38
Q

which of the following is considered the principal factor controlling xray penetration

A

kilovolts

39
Q

which of the following is a way to reduce the radiation dose to the patient

A

collimations as close as possible

40
Q

For improved image quality and reduced radiation dose to the patient, this type of technique chart is preferred in the chiropractic practice:

A

fixed kVp, variable mAs technique chart to achieve constant radiographic
contrast

41
Q

the guidelines for gonadal shielding / filtering include all of the following EXCEPT:

A

Whenever you need to provide increased contrast (tin foil hat technique)

42
Q

lateral cervical flexion and extension projection should be taken

A

when ligament stability damage is suspect

43
Q

a systematic approach to taking radiographs includes the following except

A

always have patient expire before exposure

44
Q

the breathing instruction for the PA and lateral chest projection are

A

suspended respiration after the second or third inspiration

45
Q

the IVFs in the lumbar spine are visualized on the projection

A

lateral lumbar

46
Q

when choosing technical factors for radiographic projection it is important to consider this to avoid blur due to motion

A

choose high mA, short exposure time

47
Q

the central ray for lateral cervical flexion and extension is

A

C4

48
Q

the purpose of having the patient exhale and hold during the lateral cervical projection

A

to get the shoulders out of the way so that the lower cervical region can be visualized

49
Q

where should the central ray for APOM be placed

A

C1

50
Q

when taking the APOM the most important structure to clear from the area of interested is

A

teeth

51
Q

to determine if the patient is probably a male on the AP pelvis view

A

angle below the symphysis pubis is acute

52
Q

how long is it necessary for the operator to remain behind the protective barrier after an exposure has been made beofre the pt may be safely approached

A

E. none of the above

15, 30, 45, 60 seconds

53
Q

The RADD 3511 homepage has an xray that shows?

A

an AP lumbar film that looks like ostrich

54
Q

for an AP view of lower cervical spine, the correct angle of the central ray to the image receptor

A

15 d cephalad

55
Q

which of the following reasons cited as purposes for xray of symptomatic persons is considered clinically justifiable

A

deciding future clinical management

56
Q

scatter increases when

A

kvp is increased

57
Q

upright lateral sacrum view the tube angle is

A

no tilt

X-ray Positioning (2 decks)

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