[3-dimensional imaging of temporal bone structures using spiral CT. Initial results in normal temporal bone anatomy].

3D reconstruction of the temporal bone using spiral CT techniques was performed in 51 patients with various otological diseases during routine clinical work evaluation. The 3D display was optimized by a reduced study time and improved detail accuracy by special algorithms. We were able to demonstrate comprehensively in a 3D mode the normal anatomy of the inner ear and adjacent middle ear structures, such as the modiolus of the cochlea, the semicircular canals, the cochlear and vestibular aqueduct and the ossicles. We suggest routine 3D delineation of the substructures of the temporal bone prior to otologic surgery to provide the surgeon with a 3D view of individual anatomy and specific otosurgical sites.