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Xray Positioning > Midterm > Flashcards

Midterm Flashcards

1
Q

the guidelines for gonadal shielding include all BUT the following:

A

Whenever the state inspectors show up at your office

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2
Q

Guidelines for gonadal shielding

A

Childbearing potential
Whenever shield will not cover up area of interest
Gonadal region is near or on edge of collimation
Pt expresses radiation concerns

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3
Q

10 day rule for females of child bearing age refers to performing non emergency abdominal pelvic xray:

A

During the 10 days after the onset of menstruation

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4
Q

The feet must be internally rotated 15 degrees on the AP lumbopelvic projection to achieve which of the following?

A

True A-P projection of the proximal femur

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5
Q

The AP lumbar projection should demonstrate

A

Segmental anatomy, T12 - SI joints

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6
Q

When choosing technical factors for radiographic projections, it is important to consider this to avoid blur due to motion:

A

High mA, short exposure time

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7
Q

The central ray for the lateral lumbosacral view is located horizontally and vertically at the ____ and _____

A

Top of Illiac crest and Top of Illiac crest

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8
Q

The most effective radiation protection device in the chiropractic Xray area is:

A

Gonadal shield

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9
Q

As demonstrated in lab, careful measurement of each patient setup is necessary for:

A

proper mAs

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10
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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11
Q

The purpose of the radiographic grid is to:

A

Increase contrast on the fim

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12
Q

Which of the following are ways to reduce the radiation dose to the patient?

(choose all that apply)

A

fast film/screen combination

collimation as close as possible

gonadal shielding

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13
Q

The breathing instructions are important on the thoracic and lumbar projections because it

A

allows proper density above and below diaphragm

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14
Q

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

A

the kVp set on the console

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15
Q

The lateral lumbosacral view should visualize all the following except:

A

Pubic Symphysis

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16
Q

What CAN be viewed on a lateral lumbosacral view?

A

T12
Sacrum
Aorta
IVF

17
Q

To maintain constant radiographic density on a film, if the SID is cut in half, the technical factors must be adjusted in this way:

A

Decreasing the mAs to 1/4 the original

18
Q

The measurement of the AP lumbopelvic projection is made

A

At the level of the ASIS

19
Q

The IVFs in the lumbar spine are visualized on this projection.

A

Lateral lumbar

20
Q

The intensifying screen is located within a

A

Cassette

21
Q

The function of a filter is to _____________?

A

Remove softer Xrays

22
Q

Which of the following is in the correct order from the least radio-opaque to the most?

A

air – – fat – – water – – bone – – metal

23
Q

The anode heel effect should be considered in a chiropractic office when _____________ (choose all that apply)

A

when having the machine installed in your office

when taking films with a LARGE field size and SHORT SID

24
Q

X-ray photon production occurs at the _____________.

A

Anode

25
Q

The lead protective housing controls leakage and scatter radiation through _____________.

A

Absorption

26
Q

According to the anode heel effect, the radiation intensity is _____________ (choose all that apply)

A

Greater on the CATHODE side

27
Q

A Davies Series refers to the following series of radiographs:

A

Cervicals

28
Q

Gonadal shielding should be used on the male patient for which of the following exams:

A

Pelvis
Abdomen
Femur

29
Q

In order to ensure adequate radiation protection, a quality control program includes checks on which of the following radiographic equipment conditions?

A

Reproducibility
Linearity
Positive Beam Limitation

30
Q

Which of the following illustrates the Inverse Square Law?

A

Distance is the most effective protection from radiation

As distance from the radiation source increases, radiation decreases

31
Q

The purpose of the swimmer’s view is to visualize

A

Lower Cervicothoracic Junction

32
Q

Poor screen/film contact can be caused by which of the following?

A

damaged cassette frame
foreign body in cassette
warped cassette front

33
Q

Radiographic accessories include all the following except

A

Automatic collimation

34
Q

What are some radiographic accessories?

A

Positioning sponges
Sandbags
Lead blocks
Markers

35
Q

The spinning top test can be used to evaluate

A

Timer accuracy

36
Q

All the following devices may be located on the typical x-ray unit control panel except

A

rectifier

37
Q

What can be found on your typical xray unit control panel

A

mA meter
kVp selector
time selector

38
Q

What is the minimum total amount of filtration (inherent plus added) required in the normal diagnostic x-ray machine

A

2.5 mm AL equivalent

39
Q

The two arrows are pointing to:

A

The cassette vertical stops

Xray Positioning (1 decks)

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