Facial - OMThis is a featured page

Radiographic Positioning


Adult
Other related pages of interest


Name of projection Facial Bones - Occipito Mental (OM)
Area Covered Infraorbital rim, maxillae, zygomatic bones and arch, nasal septum, anterior nasal spine
Pathology shown Fractures (blowout, tripod, leforte) , foreign bodies, fluid levels in sinus (if performed erect), neoplastic processes
Radiographic Anatomy Facial Bones Radiographic Anatomy
IR Size & Orientation 24 x 30cm
Portrait
Film / Screen Combination Regular
(CR and DR as recommended by manufacturer)
Bucky / Grid Moving or Stationary Grid
Filter No
Exposure 75 kVp
20 mAs
FFD / SID 100cm
Central Ray CR perpendicular to IR
CR to centre of IR
CR exits at acanthion
Collimation Collimate closely to outer margins of the skull
Markers Inferior and Lateral
Marker orientation PA
Shielding Gonadal (check your department's policy guidelines)
Respiration Suspend
Positioning
  • The patient should be seated, facing the upright bucky.
  • The median sagital plane should be perpendicular to the cassette, this is done by checking the external audiatory meatuses and the outer canthi of the eyes.
  • The patients mentum of the chin should be touching the upright bucky and sufficiently raised to bring the orbito-meatal baseline or radiographic baseline 45° from horizontal. Clearing the maxillary sinuses of the petrous ridge.
  • CR perpendicular to IR
  • CR to centre of IR
  • CR exits at acanthion
Critique

 Positioning
Area Covered
Collimation
Exposure
Special Notes



AndyC
AndyC 		Latest page update: made by AndyC , Jun 14 2011, 5:29 AM EDT (about this update About This Update AndyC Edited by AndyC

1 word added
1 word deleted

view changes
- complete history)
Keyword tags: facial bones OM occipito mental om om positioning om technique
More Info: links to this page

Threads for this page

There are no threads for this page.  Be the first to start a new thread.

Attachments

PNG Image OM-Projection.png (PNG Image - 15k)
posted by Kobolt60   Jun 5 2011, 6:51 PM EDT
OM Positioning Image

Related Content

  (what's this?Related ContentThanks to keyword tags, links to related pages and threads are added to the bottom of your pages. Up to 15 links are shown, determined by matching tags and by how recently the content was updated; keeping the most current at the top. Share your feedback on Wetpaint Central.)
Video Positioning - Facial Bones Occipito Mental (OM) (Waters) The AP Odontoid Peg Projection Facial Bone Radiography
The "Leaning Tower" view of the Paranasal Sinuses Fuch's View of the Odontoid Process Video Positioning - Sinuses Occipito Mental (OM) (Waters)