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Facial Bones

DFAC3V
DFAC1-2V

ROUTINE: Water’s, Caldwell, Lateral & Modified Water’s
TEC Routines: Water’s, Caldwell, & Lateral of the affected side.

DISTANCE: 40”

BUCKY: YES

FOCAL SPOT: Small

IMAGING PLATE: 10x12 CR cassette

CENTRAL RAY:

  • PA Water’s: Perpendicular to film entering at the acanthion. 
  • Caldwell: 15 deg. caudal angle entering at the nasion. 
  • Lateral: Perpendicular to the film entering the zygoma at a level halfway b/w the outer canthus and the EAM. 
  • Modified Water’s: Perpendicular to the cassette entering at the acanthion. 

HELPFUL POSITIONING:
Modified Water’s: Pt. is PA. Nose and chin of patient resting on bucky or table. OML forms a 55 deg. angle with the film. Center cassette to acanthion.

ADDITIONAL COMMENTS:

  1. If injury to zygomatic arches, do Oblique Axials (Tangential) of arches. 
  2. If unable to tip head back for Oblique Axials, do AP Axials (Modified Towne).

Updated 6/1/1976

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