[Short-cone or semi-distancing technic. Substitution for so-called contact projections].
Radiation protection requires that the so-called "on contact" (PARMA) projections be prohibited. They can be replaced by the short cone technique, which provides a sufficient enlargement to eliminate parasitic shadows on the unexamined opposite side, and is indicated for profile radiology of the TMA and profile parotid sialography examinations.
D006801:Humans; D008334:Mandible / Q000000981:diagnostic imaging; D008437:Maxilla / Q000000981:diagnostic imaging; D011861:Radiography, Dental / Q000379:methods*
La technique du cône court, ou du "semi-éloignement". Substitution aux incidences dites au "contact".