Temporal Bone Measurements; A Comparison Between Rendered Spiral CT and Surgery

Iranian Journal of Radiology : a Quarterly Journal Published by the Iranian Radiological Society
Jahanbakhsh HashemiAria Bahadori

Abstract

Accurate radiological assessment of the anatomical features of the temporal bone is crucial to prevent damage to vital elements in this area during surgery. Knowing the approximate location of specific temporal bone related landmarks in advance is very important for planning surgery. This study compared findings from computed tomography images with those observed directly during ear surgery. Patients with various pathologies of the ear who needed surgery were referred to an imaging center for a spiral CT scan of the temporal bone. The following parameters were measured by a radiologist and also later recorded by the surgeon during surgery: 1) The distance between the postero-superior border of the outer ear canal and the sigmoid sinus; 2) The distance between the dome of the lateral semicircular canal and the mastoid cortex; and 3) The distance between the external surface of the incus and the mastoid cortex. Twenty cases were included. In the three measurements performed in this study, only the first parameter (distance between the canal and the sigmoid sinus) was significantly different between the direct measurement made during surgery and that obtained from CT scans. There was no significant difference in the measurements o...Continue Reading

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Citations

Feb 1, 2017·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·Michael D PuricelliArnaldo L Rivera
Nov 22, 2019·Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India·Ahmed Abdelrahman Abdelaziz

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