[The first clinical application of the vestibular orientation of the head using a scanner, in children presenting with asymmetry].

Digitalized imaging now allows determination the "medio-labyrinthic" plane to analyse cephalic symmetry. It is constructed from the two "vestibions", central points of the rings of lateral semi-circular canals. Reconstruction parallels this plane, passing through the vestibions provide vestibular orientation, with effective and constant coïncidence between right and left directions. That being obtained, it is easy to visualise orientation of the entire cephalic region in the three incidences of "vestibular space", and to work out sections parallels to the three vestibular planes, allowing analysis of the symmetry of the studied elements.