TERMIUM Plus®

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INCIDENCE LAW [1 record]

Record 1 1992-09-16

English

Subject field(s)
  • Radiography (Medicine)
  • Musculoskeletal System
DEF

A radiographic position used to obtain a lateral projection of the mastoid process and petrous portion of the temporal bone. The median sagittal plane is parallel to the film, which is centered to a localization point 1 in. posterior to the external auditory meatus. The central ray is directed at angles 15 ° toward the feet and 15 ° toward the face.

OBS

Other Law projections are inferosuperior oblique projections of the facial bones and of the paranasal sinuses.

French

Domaine(s)
  • Radiographie (Médecine)
  • Appareil locomoteur (Médecine)
DEF

Incidence radiologique de profil de l'apophyse mastoïde et du rocher. Le plan sagittal médian est parallèle à la cassette, dont le centre se situe à 2,5 cm du conduit auditif externe, vers l'arrière. Le rayon directeur est incliné de 15 ° vers les pieds et de 15 [degrés] vers le sujet.

OBS

Law a également décrit des incidences obliques avec rayon descendant permettant de visualiser les os et les sinus de la face.

Spanish

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