Thoracic Spine Projections

Question 1

For All T-spine projections what is the cassette size?

Answer 1

14x17

Question 2

For All T-spine projections what is the SID?

Answer 2

40”

Question 3

For All T-spine projections what is the collimation?

Answer 3

7x17

Question 4

For t-spine AP Projection (intervertebral disk spaces) what is the IR?

Answer 4

upper border of IR 1.5-2” above shoulders (Center T7)

Question 5

For t-spine AP Projection (intervertebral disk spaces) what is the CR?

Answer 5

perpendicular to IR halfway between jugular notch and xiphoid process (nipple line)

Question 6

For t-spine AP Projection (intervertebral disk spaces) what is the breathing instructions?

Answer 6

suspend at end of full expiration

Question 7

For t-spine AP Projection (intervertebral disk spaces) what is the criteria to be met?

Answer 7

all 12 tspine
vertebral column aligned
no rotation spinous processes centered

Question 8

For t-spine Lateral Projection (intervertebral Foramina) what is the IR?

Answer 8

upper border of IR 1.5-2” above shoulders

Question 9

For t-spine Lateral Projection (intervertebral Foramina) what is the CR?

Answer 9

perpendicular to IR @ level of T7

female: CR angle 10 degree cephalic angle
male: CR angle 15 degree cephalic angle

Question 10

For t-spine Lateral Projection (intervertebral Foramina) what is the breathing instructions?

Answer 10

breath normally

Question 11

For t-spine Lateral Projection (intervertebral Foramina) what is the what is the criteria to be met?

Answer 11

12 tspine T1-T3 not seen well
Ribs superimposed
open intervertebral disk spaces
vertebrae seen through rib/luung shadows