Thumb - PA
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Radiographic Positioning
Adult | Other related pages of interest |
Name of projection | Thumb - PA or AP |
Area Covered | Distal and proximal phalanx, carpometacarpal joint, metacarpal, trapezium |
Pathology shown | Fracture, dislocation, foreign body, infection, tumour, arthritis |
Radiographic Anatomy | Hand Radiographic Anatomy |
IR Size & Orientation | 18 x 24cm Landscape, divided for multiple thumb images, use lead masking for unused area |
Film / Screen Combination | Detail (CR and DR as recommended by manufacturer) |
Bucky / Grid | No |
Filter | No |
Exposure | 50 kVp 2.5 mAs |
FFD / SID | 100cm |
Central Ray | Directed to thumbs metacarpophalngeal joint Perpendicular to the IR |
Collimation | Centre: Metacarpophalngeal joint Shutter A: Distal phalanx to carpometacarpal joint Shutter B: To include soft tissues |
Markers | Distal and Lateral Marker orientation AP |
Shielding | Gonadal (check your department's policy guidelines) |
Respiration | Not applicable |
Positioning |
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Critique | Positioning
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Special Notes |