COMPUTER-AIDED 3-DIMENSIONAL RECONSTRUCTION AND MEASUREMENT OF BONY AND MEMBRANOUS LABYRINTH

We used three methods to reconstruct a same bony and membranous labyri nth by an image processing work station (IPWS). Three dimensional (3-D ) models of the bony and membranous labyrinth were thus obtained. Diff erent parts of the labyrinth were measured and the spatial relationshi p between the bony and membranous labyrinth was observed. Many 3-D par ameters such as cochlear length, volume of different parts of the laby rinth, angles among the three semicircular canals were measured. The r esults of this experiment are useful in the study of the cochlear and vestibular function.