Ch. 9 Thoracic Spine

Question 1

How many bones are there in the Thoracic Spine?

Answer 1

12

Question 2

What are the projections for T-Spine?

Answer 2

AP and Lateral

Question 3

AP T-Spine:
What is the SID and collimation?

Answer 3

Image receptor- 14 x 17 lengthwise
Collimation 7 x 17
SID 40-48 inches

Question 4

AP T Spine:
Patient Position and Part Position

Answer 4

• Supine or Upright
• Shoulders in the same horizontal plane
• Arms by Side
• MSP Center
• If Supine, reduce kyphosis by flexing hips and knees to place thighs vertical!!
• If upright, weight should be equally distributed on both feet
• IR placed 1 1/2 to 2 inches above shoulders to place T7 in the center

Question 5

AP T Spine:

Central Ray?

Answer 5

Perpendicular to the IR, Enters patient halfway between the jugular notch and xiphoid process

Question 6

Structures shown and Evaluation Criteria for AP T Spine:

Pg. 464

Question 7

Lateral T Spine

What is the SID, Image Receptor Size, and Collimation?

Answer 7

SID 48 inches
14 x 17 lengthwise IR
7 x 17 Collimation

Question 8

Lateral T Spine
Patient Position and Part Position:

Answer 8

• Recumbent or upright
• Left lateral minimizes heart magnification and superimposition of the heart on the spine
• Long axis of vertebral column aligned horizontally
• If recumbent, flex hips and knees for comfort
• Superimpose hips and knees for true lateral position
• Adjust arms to a right angle from the body

Question 9

What is the central ray for a lateral T Spine?
Is there a tube angle?

Answer 9

Perpendicular to the center of the IR at the level of T7

• If the patients vertebral column is not elevated to a horizontal plane when patient is recumbent, angle the tube to direct the CR perpendicular to the long axis of the thoracic column, and then center to T7.

An average angle of 10 degrees cephalad is sufficient in most females; an average of 15 degrees cephalad for males

Question 10

Structures shown and Evaluation Criteria for Lateral T Spine:

Pg. 466

Question 11

A lateral projection of the thoracic spine is taken for a female patient.
How many degrees and in which direction is the CR angled for this projection if the spine is not supported horizontally?

Answer 11

10 degrees cephalad

Question 12

What is the breathing respiration for AP projection of the thoracic spine?

Answer 12

Suspend at the end of full expiration

Question 13

How is the CR angled and directed for the lateral projection of the thoracic spine?

Answer 13

Perpendicula, entering at T7

Question 14

What projection of the thoracic spine shows the intervertebral foramina?

Answer 14

Lateral Projection

Question 15

The thoracic vertebral column is considered?
True or moveable, or false or fixed?

Answer 15

True or moveable

Question 16

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

Answer 16

Kyphotic

Question 17

Is the thoracic curve convex or concave anteriorly?

Answer 17

Concave

Question 18

Any abnormal increase in the anterior concavity or posterior convexity of the thoracic curve is called:

Answer 18

Kyphosis

Question 19

How many vertebral bones are there in the upper 3 regions of the vertebral column?

Answer 19

24 vertebral bones - 7 cervical, 12 thoracic, and 5 lumbar vertebrae

Question 20

T1

Answer 20

2 inches above the jugular notch

Question 21

T2-T3

Answer 21

Jugular Notch

Question 22

T4-T5

Answer 22

Sternal Angle

Question 23

T7

Answer 23

Inferior angle of the scapula

Question 24

T9-T10

Answer 24

Xiphoid Process