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Arrt Review > Positioning > Flashcards

Positioning Flashcards

1
Q

What does a PA chest X-ray demonstrate when performed erect?

A

Pleural effusion, pneumothorax, atelectasis, and signs of infection

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2
Q

What is the minimum SID for a PA chest X-ray?

A

72 inches (180 cm)

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3
Q

What is the standard IR size for a PA chest X-ray?

A

14 × 17 inches (35 × 43 cm)

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4
Q

What is the kVp range recommended for a PA chest X-ray?

A

110-125

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5
Q

What is the purpose of shielding during a PA chest X-ray?

A

To shield radiosensitive tissues outside the region of interest

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6
Q

In what position should the patient be for a PA chest X-ray?

A

Erect, feet spread slightly, weight equally distributed

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7
Q

How should the patient’s chin be positioned for a PA chest X-ray?

A

Chin raised, resting against the IR

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8
Q

What is the proper arm position for a patient during a PA chest X-ray?

A

Hands on lower hips, palms out, elbows partially flexed

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9
Q

What is the correct alignment of the midsagittal plane for a PA chest X-ray?

A

Aligned with CR and midline of IR with equal margins

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10
Q

At what level should the CR be centered for an average patient during a PA chest X-ray?

A

Level of T7 (7 to 8 inches below vertebra prominens)

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11
Q

What is the recommended collimation for a PA chest X-ray?

A

Collimate to the area of lung fields with top border at vertebra prominens

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12
Q

When should the exposure be made during a PA chest X-ray?

A

At the end of the second full inspiration

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13
Q

What anatomical structures should be included in a PA chest X-ray?

A

Both lungs, air-filled trachea, hilum region, heart, great vessels, bony thorax

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14
Q

What indicates proper chin positioning in a PA chest X-ray?

A

Chin sufficiently elevated to prevent superimposing apices

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15
Q

What is the significance of shoulder rotation in a PA chest X-ray?

A

Prevents superimposition of scapulae over lung fields

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16
Q

What does proper positioning ensure in a PA chest X-ray?

A

No rotation of thorax, with both sternoclavicular joints equidistant from the center line

17
Q

What should be visible in terms of rib margins in a PA chest X-ray?

A

Distance from lateral rib margins to vertebral column should be the same on each side

18
Q

What is the evaluation criterion for exposure in a PA chest X-ray?

A

No motion, sharp outlines, sufficient long scale contrast

19
Q

True or False: A minimum of 10 posterior ribs should be visualized above the diaphragm in a PA chest X-ray.

A

True

20
Q

Fill in the blank: The top border of the illuminated field in a PA chest X-ray should be at the level of _______.

A

vertebra prominens

Arrt Review (1 decks)

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