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Radiology courses > Bony Thorax Positioning Test > Flashcards

Bony Thorax Positioning Test Flashcards

1
Q

What forms the bony thorax

A

12 Thoracic vertebrae

12 Pairs of ribs

Sternum

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2
Q

Ribs lie in an oblique plane in the thorax. How are the anterior ends situated in comparison to the posterior ribs

A

3to 5 inches lower

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3
Q

The space between each of the ribs is called the

A

Intercostal spaces

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4
Q

For which type of body habitus will the diaphragm be at the highest level in the body

A

Hypersthenic

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5
Q

For which type of body habitus will the diaphragm be at the lowest position in the body

A

Asthenic

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6
Q

What is the distance of movement of the diaphragm between deep inspirations and deep expirations

A

1.5 inches

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7
Q

The total movement of the diaphragm will be less for which type of body habitus

A

Hypersthenic

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8
Q

What are the recommended breathing techniques that should be used when examining the ribs that lie at the level of the diaphragm

A

Two expirations and hold

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9
Q

Which projection and body position will demonstrate the sternum through the heart

A

PA oblique, RAO

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10
Q

Which projection would be used to demonstrate the sternum on a trauma patient who must remain relatively supine

A

AP projection, LPO

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11
Q

How much should the body be rotated for a PA oblique projection of the sternum

A

15 to 20 degrees

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12
Q

Where is the IR centered for a PA oblique sternum

A

Seventh thoracic vertebra

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13
Q

Which breathing techniques can be used when performing an oblique projection of the sternum

A

Expiration, Slow shallow breathing

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14
Q

The central angle for the PA oblique projection of the sternum is

A

Perpendicular

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15
Q

Which SID is recommended for the lateral projection of the sternum for management of magnification

A

72 Inches

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16
Q

Where should the patient’s hands be positioned for an upright lateral sternum

A

Locked behind the back

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17
Q

What is the respiration phase for a lateral projection of the sternum

A

Deep inspiration

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18
Q

The central ray angle for a lateral sternum is

A

Perpendicular

19
Q

What is the recommended position for optimal demonstration of the upper anterior ribs

A

Upright

20
Q

How far is the top of the 14x17 inch IR or exposure field placed above the upper border of the shoulders for projections of the ribs

A

1 1/2 inches

21
Q

How are the hands placed for a PA projection of the ribs so that the scapulae are rotated away from the rib cage

A

Back of the hands against the hips with the palms out

22
Q

What is the respiration phase for the PA projection of the upper ribs

A

Full inspiration

23
Q

The central ray for a PA projection of the upper ribs is

A

Perpendicular, 0 degrees

24
Q

What is the respiration phase for the AP projection of the ribs below the diaphragm

A

Full expiration

25
Q

Where is the bottom of the IR positioned for an AP projection of the ribs below the diaphragm

A

Iliac crest

26
Q

How much is the body rotated for an AP or PA axillary projection of the ribs

A

45 degrees

27
Q

Which ribs are demonstrated on an AP oblique projection

A

Side closest to the IR

28
Q

The approximate length of the sternum is

A

6 inches

29
Q

The easily palpable superior border of the manubrium is called

A

Jugular notch

30
Q

How many ribs attach directly to the sternum

A

7

31
Q

The costal cartilages of the eight through tenth ribs attach to

A

Costal cartilage of the seventh rib

32
Q

Which ribs are called the true ribs

A

1-7

33
Q

Which ribs are called the false ribs

A

8-12

34
Q

Which ribs are attached to the vertebrae only

A

11-12

35
Q

The 12 costovertebral joints of the ribs are

A

Synovial-Gliding

36
Q

The 10 costochondral joints of the ribs are

A

Cartilaginous-Syncondroses

37
Q

What degree of rotation or tube angulation is required to demonstrate the sternum on a patient whose thorax is 30 cm

A

12 degrees

38
Q

What degree of rotation or tube angulation is required to demonstrate the sternum on a patient whose thorax is 15 cm

A

22 degrees

39
Q

What is the recommended SID necessary to blur the posterior ribs on a PA oblique projection of the sternum

A

30 inches

40
Q

How is the IR positioned for a lateral sternum

A

The top of the IR is 1.5 inches above the jugular notch

41
Q

Where is the top of the exposure field positioned for an AP oblique projection of the ribs

A

1.5 inches above the upper border of the shoulder

42
Q

Which of the following exposure field size and orientation is for the AP projection of the lower ribs

A

14x17 inches crosswise

43
Q

Which two joints articulate with the vertebra

A

Costovertebral

Costotransverse

44
Q

Which two body positions will project the right ribs free of superimposition with the spine

A

LAO, RPO

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