AC Joints, Clavicle, Scapula, SC Joints

Question 1

What is the breathing technique for AC Joints-Pearson Method?

Answer 1

Suspend Respirations

Question 2

What is the breathing technique for AP Clavicle?

Answer 2

Suspend respirations at the end of EXHALATION for a more uniform density image.

Question 3

What is the breathing technique for AP Axial Clavicle-Lordotic Position?

Answer 3

Suspend at the end of FULL INSPIRATION to further elevate and angle clavicle.

Question 4

What is the breathing technique for AP Scapula?

Answer 4

Slow breathing to obliterate lung detail (3-5 seconds preferred) or suspend respiration on exhalation for more uniform density image.

Question 5

What is the breathing technique for Lateral Scapula/ RAO or LAO body positions?

Answer 5

Suspend Respirations

Question 6

What is the breathing technique for PA SC Joints?

Answer 6

Suspend respirations at the end of EXPIRATION for more density image.

Question 7

Structures shown on an Pearson Method of AC Joints.

Answer 7

Dislocation, Separation, Function

Question 8

Centering for AC Pearson Method?

Answer 8

Perp to the midline of body at a level of the AC joints.

When 2 exposures are necessary, direct CR to respective AC joint.

Question 9

AP Clavicle centering?

Answer 9

Perp and directed to the mid shaft of the clavicle.

Question 10

AP Axial Clavicle/Lordotic Position centering?

Answer 10

directed to mid shaft of the clavicle.
angulation may vary; thinner patients more angulation to project clavicle off the scapula and ribs.
standing 0-15
supine 15-30

Question 11

PA Axial Clavicle centering?

Answer 11

mid shaft of clavicle; CR angulation 15-30 caudal

Question 12

AP Scapula centering?

Answer 12

Perp to the midscapular region.

app. 2’’ inferior to the coracoid process.

Question 13

Centering for Lateral Scapula/RAO or LAO body position?

Answer 13

Perp to the mid medial border of the protruding or affected scapula.

Question 14

Centering for the PA SC Joints?

Answer 14

Perp to the center of the IR at T3

Question 15

Centering for PA Oblique Body Rotation Method/RAO or LAO?

Answer 15

perp to the SC joint closest to the IR.
CR enters at the level of T2-3 (app. 3’’ distal to the vertebral prominens) and 1-2’’ lateral (toward the upside) to the MSP (if the CR enters the right side, the left joint is shown; if the CR enters the left side then the right joint is shown)

Question 16

PA Oblique Central Ray Angulation Method/Non Bucky centering?

Answer 16

• From the side opposite that is being examined, direct the midpoint of the IR at an angle of 15 degrees toward the MSP, a small angle is adequate due to slight overlapping of the spine and joints
• the CR should enter at the level of T2-3 and 1-2’’ lateral to the MSP (if the CR enters the left side, the right joint is seen and vice versa; aka dem, joint furthest from tube)