Wrist - PA (Clenched Fist)This is a featured page

Radiographic Positioning


Adult
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Name of projection Wrist - PA (Clenched Fist)
Area Covered Mid and proximal metacarpals, carpals, distal radius and ulna, and associated joints; soft tissue
Pathology shown Normally performed as part of a functional series of the wrist to compare the appearance of the scaphoid. This technique potentially increases the scapho-lunate distance and has an affect on ulnar variance. Often performed in conjunction with the Wrist in (Ulnar and Radial) deviation, see functional views of the wrist
Radiographic Anatomy Wrist Radiographic Anatomy
IR Size & Orientation 24 X 30cm
Landscape, divided in thirds, usually fits 3 projections, use lead masking for unused area
Film / Screen Combination Detail
(CR and DR as recommended by manufacturer)
Bucky / Grid No
Filter No
Exposure 52 kVp
2.5 mAs
FFD / SID 100cm
Central Ray Directed to midcarpal area
Perpendicular to IR
Collimation Centre: Midcarpal area
Shutter A: From mid metacarpal to one quarter of the distal radius and ulna
Shutter B: Skin margin
Markers Distal and Lateral
Marker orientation AP
Shielding Gonadal (check your department's policy guidelines)
Respiration Not applicable
Positioning
  • Patient seated at end of table
  • Elbow flexed to 90°
  • Hand pronated (palm down)
  • Hand and forearm resting on table
  • IR under wrist
  • Hand clenched
Critique

 Positioning
Area Covered
  • Proximal to midmetacarpals, carpals, and distal radius and ulna
Collimation
  • Centre: midcarpal area
  • Shutter A: From mid metacarpal to one quarter of the distal radius and ulna
  • Shutter B: Skin margin
Exposure
  • Bony trabecular patterns and cortical outlines are sharply defined
  • Soft tissues are visualised
  • Sufficient contrast and density to demonstrate the scaphoid fat stripe
Special Notes



AndyC
AndyC 		Latest page update: made by AndyC , Jun 17 2011, 3:26 PM EDT (about this update About This Update AndyC Edited by AndyC


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