LRA 223 Chapter 9 Lumbar Spine/Sacrum/Coccyx Part 2

Question 1

Sciatic type of pain resulting from a "slipped disk" indicates:

Accepted Answer

Herniated Nucleus Pulposus

Question 2

The anterior wedging of vertebrae with a loss of body height but rarely causing neurologic symptoms is called:

Accepted Answer

A compression fracture

Question 3

Carefully place gonadal shielding must always be used on female patients for the AP lumbar spine projection.

Accepted Answer

False

Question 4

A radiograph of an AP axial sacrum reveals that it is foreshortened and the sacral foramina are not clearly seen. Why?

Accepted Answer

Insuffiicient CR angle

Question 5

Where is the CR centered for an AP axial projection of the sacrum?

Accepted Answer

2 inches (5 cm) above symphysis pubis

Question 6

What type of CR angulation is required for an AP axial projections of the coccyx?

Accepted Answer

10 degrees caudad

Question 7

What CR angle should be used for a lateral sacrum/coccyx projection?

Accepted Answer

None because the CR is perpendicular to the image receptor (IR)

Question 8

A patient comes for a lumbar spine with history of spondylolisthesis of L5. Which projection best show severity of this?

Accepted Answer

Lateral L5-S1

Question 9

Geriatric patient comes for a lumbar spine series with severe kyphosis of the thoracolumbar spine. Find the right one.

Accepted Answer

Perform all positions erect

Question 10

The second projection for the Ferguson method of the scoliosis series requires that the concave side of the curve be:

Accepted Answer

Built up 3-4 inches (8-10 cm) by placing blocks beneath the patient&#x27;s foot.

Question 11

The radiographic appearance on an oblique lumbar spine in which the neck of the Scottie Dog appears broken suggest the:

Accepted Answer

Presence of Spondylolysis

Question 12

Patient had a spinal fusion did at L3-L4 earlier. Which best demonstrates the degree of movement at the fusion site?

Accepted Answer

Lateral flexion/extension

Question 13

What can the tech do to minimize dose to the fetus and mother in a lumbar spine series?

Accepted Answer

All of the above

Question 14

The AP and lateral projections for a pediatric scoliosis study should include the entire lumbar and thoracic spine.

Accepted Answer

True

Question 15

A key advantage of a PA projection taken during a pediatric scoliosis study as compared with the AP projection is:

Accepted Answer

It reduces breast and thyroid dose by 90%

Question 16

A radiograph of an AP axial L5-S1 projection reveals that the JT space is not open. Which factor needs to be changed?

Accepted Answer

Change the direction of the CR angle

Question 17

Ankylosing spondylitis is a condition of unknown cause in which calcification of bony ridges between vertebrae occurs &:

Accepted Answer

Create a lack of mobility with a "bamboo" appearance

Question 18

How much will the breast dose be decreased if a PA projection is taken in a young adult female patient with scoliosis?

Accepted Answer

90% if PA projection rather than AP projection is taken

Question 19

An abnormal lateral curvature of the spine is a congenital condition termed:

Accepted Answer

Scoliosis

Question 20

Which would best demonstrate the body of L3 and the intervertebral JT space above and below it for compression fracture?

Accepted Answer

Collimate PA and lateral projection as the positioning routine

Questions 20