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What are the two Carpal Canal projections?
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Tangential: Inferosuperior
Collimation?
patient positioning?
IR placement?
Central Ray?
Shield
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Carpal Canal

Carpal Canal Tangential Projections

TermDefinition
What are the two Carpal Canal projections? Tangential Projection: Inferosuperior Tangential Projection: Superoinferior
Tangential: Inferosuperior Collimation? patient positioning? IR placement? Central Ray? Shield 8x10 Seated at the end of the table so the forearm is parallel with the long axis of the table Center the IR to the joint at the level of the radial styloid process after hyperextending the wrist
Tangential: Inferosuperior Central Ray? Shield Directed to the palm of the hand at a point 1" distal to the base of the 3rd MC and at an angle of 25-30 degrees to the long axis of the hand Shield is required
Tangential: Superoinferior Collimation? patient positioning? IR placement? 8x10 Dorsiflex the wrist as much as possible and lean forward to place the carpal canal tangent to the IR Center the carpal canal to the IR
Tangential: Superoinferior Central Ray? Shield Tangential to the carpal canal at the level of the midpoint of the wrist Shield is required
With reference to the plane of the IR, how should the long axis of the hand be positioned for a Tangential? Vertical
With reference to the long axis of the hand, how much should the central ray be angled? 25-30 degrees
Created by: yt88
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