Fig. 2From: Positional symmetry of porion and external auditory meatus in facial asymmetryDetermination of EAM point on 3D CT image. EAM was defined as a center point of the most outer ovoid soft tissue shadow of the external auditory meatus. a Frontal view. b Lateral of right EAM. c Lateral view of left EAM. MSP midsagittal plane, Orb orbital plane, EAM external auditory meatusBack to article page