Cervical - Oblique Vertebral ArchThis is a featured page

Radiographic Positioning


Adult
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Name of projection Cervical - Oblique Vertebral Arch
Area Covered C1 to C7
Pathology shownPathology of the vertebral arches or pillars
Radiographic AnatomyCervical Spine Radiographic Anatomy
IR Size & Orientation 18 x 24 cm
Portrait
Film / Screen Combination Regular
(CR and DR as recommended by manufacturer)
Bucky / Grid Moving or Stationary Grid
FilterNo
Exposure 65 kVp
16 mAs
FFD / SID 100 cm
Central Ray CR angled 30° to 40° caudal
CR directed to exit the seventh cervical vertebra
Collimation Collimate to the 18 x 24cm film size
Shutter A: Open so that the light of the collimated field just includes the top of the ear.
Shutter B: Open to include the soft tissue of the neck laterally
Markers Anterior and Inferior
Marker orientation is AP
Mark the side being demonstrated (side that is up is demonstrated ie head turned to the left demonstrates the right side)
Shielding Gonadal (check your department's policy guidelines)
RespirationSuspended
Positioning
  • Patient supine on the table
  • Rotate the head 45° to 50° towards the unaffected side
  • A 45° to 50° degree rotation shows second to seventh cervical vertebrae and first thoracic vertebra, a rotation as much as 60° to 70° is sometimes required for demonstration of the processes of the sixth and seventh vertebra and of the first to fourth thoracic vertebra
  • Side that is up is demonstrated (mark the side being demonstrated accordingly eg head turned to the left demonstrates the right side, head turned to the right demonstrated the left side)
  • CR angled 30° to 40° caudal
  • CR directed to exit the seventh cervical vertebra
Critique

Positioning

Area Covered

Collimation

Exposure

Special Notes



AndyC
AndyC 		Latest page update: made by AndyC , Jun 27 2011, 7:53 AM EDT (about this update About This Update AndyC Edited by AndyC

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