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Rad Pro 2 > Ch. 9 Lumbar Spine > Flashcards

Ch. 9 Lumbar Spine Flashcards

1
Q

How many bones make up the lumbar spine?

A

5 bones

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2
Q

AP L Spine Patient and Part position?

A
  • Supine or Upright
  • MSP is centered to the midline of the grid
  • Shoulders and hips are in the same horizontal plane
  • Arms crossed on chest
  • Reduce lordosis by flexing hips and knees to place lower back closer to the table
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2
Q

What are the 5 projections for the lumbar spine?

A

AP
Lateral
Lateral L5-S1
AP Oblique RPO and LPO

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3
Q

What is the central ray and collimation for AP L-Spine?

A

Perpendicular to the IR at the level of the iliac crest (L4) for lumbosacral exams or 1.5 inches above the iliac crest for lumbar spine only

Collimation: 8 x 17 inches for lumbosacral spine
and 8 x 14 inches for lumbar spine only

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4
Q

Lateral L-Spine patient position and part position?

A

-Recumbent or upright
- True lateral with MCP vertical
- Knees flexed and superimposed
- Arms with elbows flexed, at right angle to body
- Place a radiolucent support under the lower spine to place horizontally if needed

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5
Q

Structures shown and Elevation Criteria for an AP L Spine:

Pg. 472

A
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6
Q

What is the central ray and collimation for a lateral L Spine projection?

A
  • CR is perpendicular to the IR, at the level of the iliac crest (L4) for the lumbosacral spine and 1.5 inches above the iliac crest for the lumbar spine only
  • If the spine is not horizontal, angle caudad 5 for men and 8 for females
  • Collimation 8 x 17 inches
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7
Q

What is the patient and part position for a Lateral L5-S1 projection?

A
  • Lateral recumbent patient position
  • MCP perpendicular to the IR
  • Hips extended
  • Superimposed knees, maybe slightly flexed
  • When elbows flexed, place arms at a right angle to the body
  • Support the lower spine in a horizontal position in the same manner as for lateral projection
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8
Q

What is the central ray and collimation for a lateral L5-S1 projection?

A

Center on coronal plane 2 inches posterior to the ASIS and 1.5 inches inferior to the crest
Collimation: 6x8

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9
Q

Structures shown and Elevation Criteria for L5-S1 projection:

Pg. 478

A
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10
Q

AP Oblique Projections demonstrate ____ joints of most lumbar vertebrae.
Both RPO and LPO positions are examined for ____

A

Zygapophyseal
Comparison

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11
Q

Patient and part position for an AP Oblique L spine?

A

Recumbent or upright, use the same position as for AP projection
- 45 degree posterior oblique position

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12
Q

What is the central ray and collimation for an AP Oblique L Spine projection?

A
  • Perpendicular to IR
  • Enters patient 2 inches medial to the elevated ASIS and 1 to 1.5 inches above the iliac crest
  • Collimation ????
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13
Q

Structures shown and elevation criteria for AP Oblique L Spine Projections

Pg. 479

A
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14
Q

What projection of the lumbar spine shows the zygapophyseal joints?

A

AP Oblique

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15
Q

The lumbar curve is convex or concave anteriorly?

A

Convex

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16
Q

When the spine is not horizontal, how is the CR angled and directed for a lateral projection of the lumbar spine, for men ___ and for women ____

A

5 degrees caudal for men
8 degrees caudal for women

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17
Q

For an AP oblique projection of the lumbar spine, the CR is directed to enter ________

A

Enters patient 2 inches medial to the elevated ASIS and 1 to 1.5 inches above the iliac crest

18
Q

If an AP oblique projection of the lumbar spine is taken, which position would the patient be in to show the right zygapophyseal joint?

A

RPO, meaning they are rotated 45 degrees towards their right side while lying supine

19
Q

What is the breathing respiration for a lateral projection of the lumbar spine?

A

Suspend

20
Q

How is the CR directed to enter for an AP projection of the lumbar spine?

A

1.5 inches above the iliac crest for the lumbar spine only, and at the level of the iliac crest for a lumbosacral spine

21
Q

If the pedicle of the scottie dog is too anterior on the vertebral body, is the patient too steep or not steep enough?

A

not steep enough

22
Q

What is the breathing respiration for the L5-S1 spot projection of the lumbar spine?

A

suspend

23
Q

If the patient is laying prone on the radiographic table with their right side angled 45 degrees away from the tabletop. What anatomy of the lumbar spine is demonstrated?

A

Right lumbar zygapophyseal joints

23
Q

When referring to the development of the vertebral curvature, the lumbar curve is considered primary or secondary?

A

Secondary Curve

(Cervical and Lumbar develop after birth)

23
Q

When viewed from the side the vertebral column has 4 curves, the lumbar curve is considered?

A

Lordotic

24
Q

What projection of the lumbar spine will show the intervertebral foramina?

A

Lateral projection

25
Q

How is the CR angled and directed for the L5-S1 spot projection of the lumbar spine?

A

Perpendicular to enter 2 inches medial to the elevated ASIS and to a point midway between the lilac crest and ASIS

26
Q

Is the lumbar curve convex or concave posteriorly?

A

Concave

27
Q

If the pedicle of the scottie dog is too posterior to the vertebral body, is the patient too steep or not steep enough?

A

too steep

28
Q

L2-L3

A

Inferior Costal Margin

29
Q

L4-L5

A

Level if superior most aspect of iliac crest

30
Q

What is the eye of the Scottie dog on an oblique lumbar spine?

A

Pedicle

31
Q

Know Parts of Scottie Dog!

Pg. 480

A
32
Q

What is the SID and CR for AP Lumbar Spine Projection?

A
  • 40-48 SID
  • CR perpendicular to the IR at the level of iliac crest (L4) for Lumbosacral Examination, OR 1.5 inches above the iliac crest for the Lumbar Spine only
33
Q

What is the SID and CR for Lumbar Lateral Projection?

A

40 SID
CR is perpendicular; at the level of the iliac crest (L4) for the lumbosacral spine OR 1.5 inches above the iliac crest for lumbar spine only

34
Q

What is the SID and CR for Lumbar Lateral (Right or Left position) L5-S1 Projection?

A

40 SID
CR; center on the coronal plane 2 inches posterior to the ASIS and 1.5 inches inferior to the iliac crest

35
Q

What is the SID and CR for Lumber AP Oblique Projection RPO and LPO?

A

40 SID
CR-
Lumbar Region: Perpendicular to enter 2 inches medial to the elevated ASIS and 1 to 1.5 inches above the iliac crest

L5-S1 Zygapophyseal Joint: Perpendicular to enter 2 inches medial to the elevated ASIS and to a point midway between the iliac crest and the ASIS

36
Q

What projection of the lumbar spine do you see the Scottie dog?

A

AP Oblique!

37
Q

What is the ear of the Scottie dog?

A

Superior articular process

38
Q

What is the nose of the Scottie dog?

A

Transverse Process

39
Q

What is the neck of the Scottie Dog?

A

Pars interarticularis

40
Q

What is the lamina of the Scottie dog?

A

Body of Scottie

41
Q

What is the front foot of the Scottie dog?

A

Inferior articular process

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