Shoulder/scapula/clavicle projections

Question 1

For all shoulder projections the cassette size is?

Answer 1

10x12

Question 2

For all shoulder projections the SID is (except for AC joints)?

Answer 2

40”

Question 3

For AC joint SID is?

Answer 3

72”

Question 4

For Shoulder AP what is the IR?

Answer 4

1” below coracoid process

Question 5

For Shoulder AP what is the CR?

Answer 5

1” below coracoid process

Question 6

For Shoulder AP what is the collimation?

Answer 6

10x12

Question 7

For Shoulder AP what is the breathing instructions?

Answer 7

suspend

Question 8

For Shoulder AP what is the criteria to be met?

Answer 8

external: humeral head in profile
greater tubercle in profile
scapulhumeral joint visualized

neutral: greater tubercle partially superimposed
internal: lesser tubercle in profile

Question 9

For Shoulder AP Oblique Grashey (glenoid cavity) what is the IR?

Answer 9

center to scapulohumeral joint

2” medial 2” inferior to border of shoulder

Question 10

For Shoulder AP Oblique Grashey (glenoid cavity) what is the CR?

Answer 10

perpendicular to IR- 2” medial 2” inferior superolateral border of shoulder

Question 11

For Shoulder AP Oblique Grashey (glenoid cavity) what is the collimation?

Answer 11

8x10

Question 12

For Shoulder AP Oblique Grashey (glenoid cavity) what is the breathing instructions?

Answer 12

suspend

Question 13

For Shoulder AP Oblique Grashey (glenoid cavity) what is the criteria to be met?

Answer 13

glenoid cavity in profile

open joint spaces

Question 14

For Shoulder Transthoracic Lateral (Lawrence) what is the IR?

Answer 14

center surgical neck of humerus

Question 15

For Shoulder Transthoracic Lateral (Lawrence) what is the CR?

Answer 15

Perpendicular to IR- if cannot elevate unaffected shoulder angle CR 10-15 degrees cephalic

Question 16

For Shoulder Transthoracic Lateral (Lawrence) what is the Collimation?

Answer 16

10x12

Question 17

For Shoulder Transthoracic Lateral (Lawrence) what is the breathing instructions?

Answer 17

full inspiration

Question 18

For Shoulder Transthoracic Lateral (Lawrence) what is the criteria to be met?

Answer 18

scapula, clavicle, prox humerus seen

scapula superimposed over thoracic spine

Question 19

For Shoulder Inferosuperior Axial (Lawrence) what is the IR?

Answer 19

edge against shoulder close to neck

Question 20

For Shoulder Inferosuperior Axial (Lawrence) what is the CR?

Answer 20

horizontally through axilla medial angulation of 15-30 degrees

Question 21

For Shoulder Inferosuperior Axial (Lawrence) what is the collimation?

Answer 21

12” by 1” above shoulders

Question 22

For Shoulder Inferosuperior Axial (Lawrence) what is the criteria to be met?

Answer 22

scapulohumeral joint w/o slight overlap
coracoid process anteriorly
lesser tubercle in profile
Ac joint, acromion and acromial end of clavicle projected though humeral head

Question 23

For Shoulder Inferosuperior Axial (Lawrence) what is the breathing instructions?

Answer 23

suspend

Question 24

For Shoulder PA Oblique (Scapular Y) what is the IR?

Answer 24

center @ level of scapulohumeral joint

Question 25

For Shoulder PA Oblique (Scapular Y) what is the CR?

Answer 25

perpendicular to scapulohumeral joint- pt at 45-60 degree angle

Question 26

For Shoulder PA Oblique (Scapular Y) what is the Collimation?

Answer 26

12" by 1"

Question 27

For Shoulder PA Oblique (Scapular Y) what is the breathing instructions?

Answer 27

suspend

Question 28

For Shoulder PA Oblique (Scapular Y) what is the criteria to be met?

Answer 28

humeral head and glenoid cavity superimposed humeral shaft and scapular body superimposed acromion projected laterally

Question 29

For Shoulder AP (AC Joint) Pearson Method what is the IR?

Answer 29

@ level of AC joints

Question 30

For Shoulder AP (AC Joint) Pearson Method what is the CR?

Answer 30

@ level of AC joints

Question 31

For Shoulder AP (AC Joint) Pearson Method what is the Collimation?

Answer 31

6x17 (both) or 6x8 (each)

Question 32

For Shoulder AP (AC Joint) Pearson Method what is the breathing instructions?

Answer 32

suspend

Question 33

For Shoulder AP (AC Joint) Pearson Method what is the criteria to be met?

Answer 33

no rotation or leaning by patient | AC joint seperation

Question 34

For Clavicle AP what is the IR?

Answer 34

center to clavicle

Question 35

For Clavicle AP what is the CR?

Answer 35

perpendicular to midshaft of clavicle

Question 36

For Clavicle AP what is the breathing instructions?

Answer 36

suspend at end of exhalation

Question 37

For Clavicle AP what is the collimation?

Answer 37

8x12

Question 38

For Clavicle AP what is the criteria to be met?

Answer 38

entire clavicle centered | lateral half of clavicle above scapula

Question 39

For Clavicle AP Axial what is the IR position?

Answer 39

center clavicle

Question 40

For Clavicle AP Axial what is the CR position?

Answer 40

enter midshaft of clavicle standing- 15-30 cephalic angle lordotic- 0-15 cephalic angle supine-15-30 cephalic angle

Question 41

For Clavicle AP Axial what is the breathing instructions?

Answer 41

suspend at end of full inspiration

Question 42

For Clavicle AP Axial what is the collimation?

Answer 42

8x12

Question 43

For Clavicle AP Axial what is the criteria to be met?

Answer 43

entire clavicle w AC/SC joints | lateral 2/3 of clavicle above ribs

Question 44

For Scapula AP what is the IR?

Answer 44

2" above top of shoulders

Question 45

For Scapula AP what is the CR?

Answer 45

2" below coracoid process

Question 46

For Scapula AP what is the breathing instructions?

Answer 46

slow breathing

Question 47

For Scapula AP what is the collimation?

Answer 47

10x12

Question 48

For Scapula AP what is the criteria to be met?

Answer 48

lateral scapula free of superimposition | acromion and inferior angle

Question 49

For Scapula Lateral what is the IR?

Answer 49

body of scapula perpendicular to IR

Question 50

For Scapula Lateral what is the CR?

Answer 50

perpendicular to midmedial border of scapula- patient angled 45-60 degrees

Question 51

For Scapula Lateral what is the breathing instructions?

Answer 51

suspend

Question 52

For Scapula Lateral what is the collimation?

Answer 52

12" by 1.5 inch above shoulders

Question 53

For Scapula Lateral what is the criteria to be met?

Answer 53

lateral/medial scapular border superimposed no superimposition of scap body on ribs no superimposition of humerus on scapula