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Jun 17 2011, 3:16 AM EDT (current) AndyC 2 words added, 1 word deleted
Jun 17 2011, 2:08 AM EDT AndyC 31 words added


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Radiographic Positioning

Other related pages of interest

Name of projection Sinuses - PA 15° (Caldwell view)This is a featured page
Area Covered Frontal sinuses projected above the frontonasal suture, Anterior ethmoid air cells visualised lateral to each nasal bone directly below the frontal sinuses
Pathology shown Inflammatory conditions ie: sinusitis, secondary osteomyelitis and sinus polyps
Radiographic Anatomy Sinuses Radiographic Anatomy
IR Size & Orientation 18 x 24cm
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 angled caudad 15° and centre to exit at the nasion
Collimation Four sides of collimation
Collimate closely to area of interestsinus cavaties
Markers Inferior and Lateral
Marker orientation PA
Shielding Gonadal (check your department's policy guidelines)
Respiration Suspended
Positioning Erect
  • Patient is standing or sitting facing the upright bucky
  • Forehead and nose touch the bucky
  • The radiographic baseline (OrbitoMeatal Line) is perpendicular to the bucky
  • The midsaggital plane is also perpendicular to the bucky
  • The interpupillary line is parallel to the floor
  • Ensure no rotation of the head by checking that the EAMs are the same distance from bucky
  • CR angled caudal 15°
  • CR directed to exit at the level of the nasion

Area Covered
Special Notes