... ap-proach presents several advantages. It allows automat-ic generation of a huge amount of real-size cephalo-metric data that are immediately available for clinicaldecision making or statistical ... Sella, Nasion and Menton landmarks define the facial midplane(linked virtual lateral and frontal cephalograms, patient K.C.)Figs. 6.30, 6.31. Sella, Nasion and Menton landmarks define the facial ... intra-observer meas-urement error was less than 0 .85 ° for angular measure-ments and less than 0. 78 mm, 0 .88 mm, 0.76 mm and 0 .84 mm for linear, horizontal, vertical and transverseorthogonal...