Quiz 4

Question 1

T or F: An AP axial cervical projection with accurate positioning demonstrates both the following stated below.
mandibular angles, mastoid tips, and shoulders are positioned at equal distances from the IR.
central ray is angled 15 to 20 degrees cephalically.

Answer 1

True

Question 2

T or F: An AP axial cervical projection with accurate positioning demonstrates the following stated below
open intervertebral disk spaces.
the spinous processes aligned with the midline of the cervical bodies.

Answer 2

True

Question 3

An AP axial cervical projection with poor positioning demonstrates obscured intervertebral disk spaces and each vertebra’s spinous process within its vertebral body. How was the positioning setup mispositioned for such a projection to be obtained?
looking at the above statement would this be an accurate analysis statement ?
* The patient’s head was tilted.

Answer 3

No -The central ray was angled too caudally.

Question 4

True or False : An AP atlas and axis projection with accurate positioning demonstrates
the axis’s spinous process aligned with its body midline.
an open atlantoaxial joint.
the upper incisors and posterior occiput superior to the dens.

Answer 4

True

Question 5

True or False : A lateral cervical projection with accurate positioning demonstrates
C1 and C2 without cranial or mandibular superimposition.
open intervertebral disk spaces.
superimposed right and left articular pillars and zygapophyseal joints.
the spinous process in profile.

Answer 5

True

Question 6

True or False:
For a lateral cervical projection obtained in maximum flexion, the following should happen and be seen:
patient’s chin is extended up and backward as far as possible.
intervertebral disk spaces between the cervical bodies are widened.

Answer 6

False

Question 7

Which of the following is not demonstrated as open on PA axial oblique cervical vertebrae?
a. Intervertebral foramina
b. Intervertebral disk spaces
c. Vertebral foramen of C1
d. Zygapophyseal joints

Answer 7

d

Question 8

An AP thoracic vertebrae projection demonstrating obscured lower thoracic intervertebral disk spaces and distorted vertebral bodies
a. was obtained with the patient’s torso rotated.
b.was obtained with the patient’s legs extended.
c. is considered to be optimal for this projection.
d. will also demonstrate closed upper thoracic intervertebral disk spaces.

Answer 8

b

Question 9

True or False :To obtain open intervertebral disk spaces for AP axial cervical vertebrae projections when imaging the upright and kyphotic patient, the central ray angulation needs to be increased over that used on the supine patient.

Answer 9

True

Question 10

A less than optimal lateral cervical vertebrae projection demonstrates the articular pillars of one side of the patient situated anterior to the opposite articular pillars. How was the patient mispositioned?
a. The midsagittal plane was not aligned perpendicular to the IR.
b. The acanthiomeatal line was not parallel with the floor.
c. The midcoronal plane was not aligned perpendicular to the IR.
d. The interpupillary line was not perpendicular to the IR.

Answer 10

c

Question 11

Which of the following projections or positions demonstrates the right intervertebral foramina?
1. Lateral
2. LPO
3. LAO
4. RAO

Answer 11

2 and 4 only

Question 12

A PA axial oblique cervical projection (LAO position) obtained with the patient overrotated demonstrates the
1. right pedicles in the midlines of the vertebral bodies.
2. right pedicles in profile.
3. left zygapophyseal joints.
4. vertebral column superimposed over the right SC joint and medial clavicle.

Answer 12

1 and 3 only

Question 13

A PA axial oblique cervical projection demonstrates closed intervertebral disk spaces and distorted vertebral bodies when the

Answer 13

central ray angulation is inaccurate.

Question 14

An AP thoracic projection with poor positioning demonstrates closed eighth through twelfth intervertebral disk spaces. How was the patient mispositioned for such a projection to be obtained?

Answer 14

The patient’s knees and hips were extended.

Question 15

A less than optimal AP axial cervical vertebrae projection demonstrating closed intervertebral disk spaces and each vertebra’s spinous process within its vertebral body

Answer 15

was obtained with the central ray angled too caudally.

Question 16

A PA axial oblique cervical vertebrae projection demonstrating the pedicles on one side aligned with the midline of the vertebral bodies and open zygapophyseal joints was obtained with the

Answer 16

patient rotated more than 45 degrees.

Question 17

An optimal lateral thoracic vertebrae projection demonstrates all of the following except

Answer 17

no more than 0.5 inch (1.25 cm) of space between the posterior surfaces of each vertebral body.

Question 18

A left lateral thoracic vertebrae projection demonstrating more than 0.5 inch (1.25 cm) of space between the posterior ribs

Answer 18

was obtained with the patient’s right side rotated posteriorly.

Question 19

A left lateral lumbar projection with poor positioning demonstrates rotation. The posterior ribs that are most magnified and projected inferiorly are rotated anteriorly. How should the patient be repositioned for an optimal projection to be obtained?

Answer 19

Rotate the patient’s right side posteriorly.

Question 20

An AP axial sacral projection with poor positioning demonstrates that the symphysis pubis rotated toward the patient’s right side. How was the positioning setup mispositioned for such a projection to be obtained?

Answer 20

The patient was in an RPO position.

Question 21

A left lateral sacral projection demonstrates the greater sciatic notches without superimposition and the superiorly situated femoral head anteriorly. How should the positioning setup be adjusted for an optimal projection to be obtained?

Answer 21

Rotate the right side of the pelvis posteriorly.

Question 22

An AP axial coccygeal projection demonstrates the symphysis pubis superimposed over the second and third coccygeal vertebrae. How was the positioning setup mispositioned for such a projection to be obtained?

Answer 22

The central ray was angled too cephalically.

Question 23

An AP lumbar vertebrae projection demonstrating greater distances from the right pedicles to the spinous processes than from the left pedicles to the spinous processes

Answer 23

was obtained with the patient’s right side positioned closer to the IR than the left side.

Question 24

The posterior surfaces of the vertebral bodies are demonstrated without superimposition on a left lateral lumbar vertebrae projection. The most magnified ribs are demonstrated posteriorly. How should the positioning setup be adjusted to obtain an optimal projection?

Answer 24

Rotate the right side anteriorly until the midcoronal plane is perpendicular to the IR.

Question 25

A less than optimal AP axial sacral projection demonstrating sacral foreshortening

Answer 25

was obtained with an insufficient amount of cephalic central ray angulation.