DETERMINATION OF MORPHOMETRY AND VOLUME OF THE INTERNAL AUDITORY CANAL

OBJECTIVE: The internal auditory canal (IAC) also known as acoustic meatus is a bone channel that connects the ear to posterior cranial fossa. mean length approximately 1 cm. edge of IAC called pore (IAP), and this aperture blunt rounded. Important formations such facial nerve, vestibulocochlear labyrinth artery vein pass through IAC. In addition, on precise determination morphometry in surgical interventions temporal lobe, MAI vital. Therefore, study, it was aimed determine volume MAI.MATERIAL AND METHODS: study carried out CT images 210 individuals randomly from normal population between ages 10-90. Morphometric measurements (lateral angle (LA), length, anteroposterior (AP), diameter IAP, distance IAP vestibular aqueduct (VA)) were performed. shape determined study. Cases divided into 7 different subgroups, 10-14, 15-20, 21-30, 31-40, 41-50, 51-60 61 years old, depending their age.RESULTS: patients analyzed. 9.5±1.6mm, AP 6.3±1.5mm, entrance part VA 15.1±6.64mm, 290±120mm3, LA 50±14º.CONCLUSIONS: When outcome data compared by gender, found statistically significant right higher men, both sides women. when volumes age groups, 10-14 group smaller than other groups.