Chest - Dorsal DecubitusThis is a featured page

Radiographic Positioning


Adult
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Name of projection Chest - Dorsal Decubitus
Area Covered Lung fields, apices, costophrenic angles
Pathology shownPathologies involving the lung fields, changes in fluid position from PA/AP view and reveals any previously obscured pulmonary areas
Radiographic AnatomyChest Radiographic Anatomy
IR Size & Orientation 35 x 43 cm
Landscape
Film / Screen Combination Regular
(CR and DR as recommended by manufacturer)
Bucky / Grid Moving or Stationary Grid
FilterNo
Exposure 110 kVp
8 mAs
FFD / SID 180cm
Central Ray Directed to the mid coronal plane at the level of T7
Perpendicular to the IR
Collimation Centre: The mid coronal plane at the level of T7
Shutter A: Open to include the skin margins anteriorly and posteriorly
Shutter B: Open to include lung apices superiorly (this is at the C7 level) and to include the diaphragm inferiorly
Markers Superior and Anterior
Marker orientation AP
Marker the side closest to the IR
Shielding Gonadal (check your department's policy guidelines)
Respiration On suspended deep inspiration
Positioning
  • Patient supine on the X-ray table
  • Raise the thorax off the table 5 to 8cm using a firm mattress (to prevent cutting off essential anatomy)
  • Keep patient in position for 5 minutes prior to exposure to allow air to rise and fluid to settle
  • Adjust body into true supine position and extend arms above the head
  • Place affected side next to upright bucky / vertically placed IR
  • CR directed to the mid coronal plane at the level of T7, perpendicular to the IR
Critique

Positioning
Area Covered
Collimation
Exposure
Special Notes



AndyC
AndyC 		Latest page update: made by AndyC , Jun 19 2011, 2:32 PM EDT (about this update About This Update AndyC Edited by AndyC

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