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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44601

Morphometric Assessment of Optic Canal: A Comparative Study Between Dry human Skull and Computed Tomography with its Clinical Implications

SHAHIN SALMA KHATUN, DR. YOGESH YADAV, DR. VIJAY KULSHRESTHA, DR. NEETA CHHABRA, DR. NISHA V KAUL, DR. SATABDI SARKAR

Abstract

Objective – The main objective of this research is to study the morphometry of the optic canal and the surrounding bony structures in adult human dry skulls and compare it with the parameters obtained from computer tomography (CT) scan. Methodology –The optic canal of 90 adult dry skull were examined by digital vernier caliper and 110 CT scans were observed by thin layer CT scan images in coronal and axial plane using high resolution matrix and bone algorithm. 3D reconstruction images were also used. The height, width and length of medial wall and lateral wall of the optic canal were measured. The distance between optic canal and apex of petrous part of temporal bone, distance between optic canal from midline, distance between optic canal and tip of anterior clinoid process, and distance between both optic canals were also calculated. The data was tabulated and analysed statistically. Result – The mean height of optic canal (OC) in CT and dry skull was 3.96±1.35mm and 4.90±1.04mm respectively. The meanwidth in CT and dry skull was 3.97±1.45mm and 4.30±0.93mm. The mean length of medial wall and lateral wall in CT and dry skull was 9.10±2.01mm, 8.10±1.93mm and 5.89±1.39mm, 4.41±1.35mm respectively. The mean distance of OC to the apex of petrous temporal bone in CT and dry skull was 24.73±2.98mm and 24.64±2.88mm whereas the mean distance between both the OC in CT and dry skull was 14.45±2.69mm and 16.70±1.90mm respectively. The mean distance of OC to the apex of anterior clinoid process in CT and dry skull was 10.14±1.86mm and 9.25±1.85mm and the mean distance of optic canal from midline in CT and dry skull was 7.22±1.35mm and 6.39±1.11mm respectively. Conclusion – We found significant difference in morphometric parameters between the optic canal and the surrounding parasellar region in dry skulls and CT scans. It will help neurosurgeons in their clinical practice

Keywords

The main objective of this research is to study the morphometry of the optic canal

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