C/T Spine

Question 1

Fuch’s Method Structures Shown

Answer 1

Dens lying within the circular foramen magnum

Question 2

If upper incisors are projected over the dens in AP Open Mouth, how do you correct this?

Answer 2

Tilt head up

Question 3

If base if the skull is projected over the dens in AP Open Mouth, how do you correct this?

Answer 3

Tilt head down

Question 4

Where is the IR centered for the Lateral C-Spine?

Answer 4

At the level of the atlantoaxial articulation, 1 inch distal to the tip of the mastoid process

Question 5

Where does the CR enter for a Lateral C-Spine?

Answer 5

Perpendicular to a point 1 inch distal to the mastoid tip (C1)

Question 6

What level do you center the IR at for an AP Axial Projection of the C-Spine?

Answer 6

C4

Question 7

Where does the CR enter for an AP Axial C-Spine?

Answer 7

C4 at an angle of 15-20 degrees cephalad (slightly inferior to the thyroid cartilage)

Question 8

In Hyperflexion (Lateral), the spinous processes are

Answer 8

Elevated and widely separated

Question 9

In Hyperextension (Lateral), the spinous processes are

Answer 9

Depressed in close approximation

Question 10

Where is the IR centered for Hyperflexion/Hyperextension Lateral?

Answer 10

At the level of C4

Question 11

Where is the TOP OF THE IR centered for Hyperflexion/Hyperextension Lateral?

Answer 11

2in. above the EAM

Question 12

Where does the CR enter for Hyperflexion/Hyperextension Lateral?

Answer 12

Perpendicular and Horizontal to C4

Question 13

Why use Obliques in C-Spine?

Answer 13

To see Intervertebral Foramina

Question 14

In a PA Axial Oblique, you will see intervertebral foramina

Answer 14

Closest to the IR

Question 15

In a AP Axial Oblique, you will see intervertebral foramina

Answer 15

Farthest from the IR