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AP SHOULDER—EXTERNAL ROTATION SID is
40 inches
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AP SHOULDER—EXTERNAL ROTATION SID IR size is
IR size—10 × 12 inches
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AP SHOULDER—EXTERNAL ROTATION Kvp Range Analog and Digital
- Analog—70 to 75 kV range
- Digital systems—75 to 85 kV range
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AP SHOULDER—EXTERNAL ROTATION Patient Position
- patient in an erect or supine position.
- Rotate body slightly toward affected side if necessary to place shoulder in contact with IR or tabletop.
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AP SHOULDER —EXTERNAL ROTATION Part Position
- Position patient to center scapulohumeral joint to center of IR.
- Abduct extended arm slightly;
- externally rotate arm (supinate hand) until epicondyles of distal humerus are parallel to IR
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WHERE DO YPU CENTER CR IN AN AP SHOULDER—EXTERNAL ROTATION
CR perpendicular to IR, directed to 1 inch (2.5 cm) inferior to coracoid process
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Anatomy Demonstrated FOR AN AP SHOULDER—EXTERNAL ROTATION
- AP projection of proximal humerus
- lateral two-thirds of clavicle
- upper scapula, including relationship of the humeral head to the glenoid cavity
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AP PROJECTION—INTERNAL ROTATION: SHOULDER Minimum SID IS
40 INCHES
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AP PROJECTION—INTERNAL ROTATION: SHOULDER IR size IS
(10 × 12 inches)
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AP PROJECTION—INTERNAL ROTATION: SHOULDER ANALOG AND DIGITAL
- Analog—70 to 75 kV range
- Digital systems—75 to 85 kV range
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AP PROJECTION—INTERNAL ROTATION:Patient Position
- erect or supine position.
- Rotate body slightly toward affected side
- if necessary to place shoulder in contact with IR or tabletop
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AP PROJECTION—INTERNAL ROTATION: Part Position
- Position patient to center scapulohumeral joint to center of IR.
- Abduct extended arm slightly;
- externally rotate arm
- (supinate hand) until epicondyles of distal humerus are parallel to IR.
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AP PROJECTION—INTERNAL ROTATION:CR CENTERED TO
- CR perpendicular to IR,
- directed to 1 inch (2.5 cm) inferior to coracoid process
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Anatomy Demonstrated AP PROJECTION—INTERNAL ROTATION
- proximal humerus
- two-thirds of clavicle
- upper scapula,
- relationship of the humeral head to the glenoid cavity.
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POSTERIOR OBLIQUE POSITION—GLENOID CAVITY: SHOULDER SID IS
40inches
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POSTERIOR OBLIQUE POSITION—GLENOID CAVITY: SHOULDER IR SIZE
8X10
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POSTERIOR OBLIQUE POSITION—GLENOID CAVITY: SHOULDER kVP
Analog—75 ± 5 kV range
Digital systems—75 to 85 kV range
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POSTERIOR OBLIQUE POSITION—GLENOID CAVITY: SHOULDER Part Position
- Rotate body 35 ° to 45 ° toward affected side
- If the radiograph is performed with the patient in the supine position, place supports under elevated shoulder and hip to maintain this position.
- Center midscapulohumeral joint to CR and to center of IR.
- Adjust cassette so that top of IR is about 2 inches (5 cm) above shoulder and side of IR is about 2 inches (5 cm) from lateralborder of humerus.
- Abduct arm slightly with arm in neutral rotation
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POSTERIOR OBLIQUE POSITION—GLENOID CAVITY: SHOULDER Anatomy Demonstrated:
Glenoid cavity should be seen in profile without superimposition of humeral head.
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POSTERIOR OBLIQUE POSITION—GLENOID CAVITY: SHOULDER CR
perpendicular to IR, centered to scapulohumeral joint, which is approximately 2 inches (5 cm) inferior and medial from the superolateral border of shoulder
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AP PROJECTION—NEUTRAL ROTATION: SHOULDER SID
40 INCHES
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AP PROJECTION—NEUTRAL ROTATION: SHOULDER IR SIZE
10X12
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AP PROJECTION—NEUTRAL ROTATION: SHOULDER kVP
- 70-80 ANALOG
- 75-80 DIGITAL
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AP PROJECTION—NEUTRAL ROTATION: SHOULDER Part Position•
- Position patient to center scapulohumeral joint to IR
- Place patient’s arm at side in “as is” neutral rotation.
- (Epicon-dyles generally are approximately 45° to plane of IR.)
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AP PROJECTION—NEUTRAL ROTATION: SHOULDER CR POSITION
- CR perpendicular to IR, directed to midscapulohumeral joint,
- which is approximately 3 4 inch (2 cm) inferior and slightly lateral to coracoid process
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TRANSTHORACIC LATERAL PROJECTION:SHOULDER IR SIZE
10X12
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TRANSTHORACIC LATERAL PROJECTION:SHOULDER KvP
- 75-+5 ANALOG
- 75-85 DIGITAL
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TRANSTHORACIC LATERAL PROJECTION:SHOULDER Part Position•
- Place affected arm at patient’s side in neutral rotation; drop shoulder if possible.
- Raise opposite arm and place hand over top of head; elevate shoulder as much as possible to prevent superimposition of affected shoulder.
- Center surgical neck and center of IR to CR as projected through thorax. Ensure that thorax is in a true lateral position or has slight ante- rior rotation of unaffected shoulder to minimize superimposition of humerus by thoracic vertebrae.
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TRANSTHORACIC LATERAL PROJECTION:SHOULDER CR POSITION
CR perpendicular to IR, directed through thorax to level of affected surgical neck
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