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Background Nowadays, data on the anthropometric measurements of populations is needed in many areas, especially forensic and legal. Using various methods, researchers obtain various data such as race, sex, and age, and thus provide identification of the material used. Morphological or metric methods are often used for identification. Purpose To evaluate the usefulness of the results of skull measurements using computed tomography (CT) to determine sex in a Turkish population. Material and Methods We analyzed 300 male and 300 female CT images of Turkish individuals with an age range of 21–50 years. Maximum cranial length, maximum cranial breadth, bimastoid diameter, bizygomatic diameter, and bigonial breadth were measured by CT tomography. All data were subjected to discriminant function analyses for estimating sex. Intra-observer and inter-observer variances of the measurements were examined using intraclass correlation coefficient analysis. Results Discriminant function analysis indicated that there was a significant difference between male and female with 88% accuracy. Discriminant function for estimation of sex was obtained with satisfactory accuracy rates for the parameters used. Conclusion This study confirms that skull measurements show sexual dimorphism in the Turkish population, and also suggests that it may be useful to use CT to assess skull anthropometric measurements.

Objectives: To evaluate the effectiveness of high resolution computed tomography (HRCT) and magnetic resonance imaging (MRI) for assessment of factors which would influence the type and success of surgery in patients undergoing cochlear implantation. Materials and methods: All patients underwent HRCT imaging while MRI was performed in 38 of them. MRI and HRCT images were evaluated for mastoid cell pneumatization, sigmoid sinus localization, aberrant vascular structures, congenital anomalies, cochlear stenosis, labyrinth ossification, infection, internal acoustic canal width, presence of vestibulo-cochlear nerve, semicircular canals, cerebellopontin area, and cochlear and vestibular aquaduct width. Results: Totally 49 patients (29 males and 20 females with a mean age of 12.3 years (1-61 years) were included. Various abnormalities or congenital anomalies were found in 35 patients by HRCT and MRI. We observed grade 1 mastoid cell pneumatization in 58 ears (59.3%), grade 2 in 23 (23.4%) and grade 3 in 17. Furthermore the position of sigmoid sinus (p<0.001) and mastoid width (p<0.001) were affected by mastoid cell ventilation. HRCT provides knowledge about mastoid and middle ear ventilation, cortical bone thickness, round window niche, perilymphatic-endolymphatic compartment and status of internal acoustic canal. Pathologies such as otosclerosis and Paget disease that involve otic capsule can be revealed by CT. MRI can provide views of intracochlear viscosity and cochlear opening, semicircular canals, cerebellopontin area, and vestibulocochlear nerve. Conclusions: HRCT and MRI provide information about the etiology of hearing loss, suitable side for cochlear implantation and detection of abnormalities or anatomic variations that may cause complications introperatively.