High-resolution Computed Tomographic Evaluation of Pathologies of Temporal Bone
Journal Title: Scholars Journal of Applied Medical Sciences - Year 2017, Vol 5, Issue 3
Abstract
Abstract: Before the advent of computed tomography (& HRCT), complex bone and air cells anatomy and pathologies of temporal bone were evaluated with the help of plain radiograph, polytomography etc. High resolution computed tomography (HRCT) - a modification of routine CT produces images with higher contrast and a better spatial resolution. In fact HRCT has revolutionized the method of imaging the temporal bone with its special algorithms and multiplanar reformats. This study was aimed to develop a systematic method for evaluation of temporal bone pathologies.The objective is to evaluate the inflammatory, traumatic, neoplastic and congenital pathologies of the temporal bone with the help of HRCT.This was cross-sectional prospective study conducted on a total of 100 patients of varied age group at DVVPF’S Medical College, presenting with symptoms and signs of temporal bone pathologies, between a time period of June2015 to November 2016. Imaging diagnosis was confirmed either by histopathology or follow-up and response to treatment.In our study, temporal bone pathologies were more common in male (60 %) compared to female population (40%). The most common age group affected by the temporal bone pathologies was 21-30 years age group (24%) and least common age group was more than 60 years (1%). The most common temporal bone pathology in our study was inflammatory lesions (78%) followed by traumatic (12%), neoplasm (6%), congenital (4 %). Most common inflammatory pathology in our study was cholesteatoma (51.2%) followed by oto-mastoiditis (48.8%). Out of 6 cases of neoplastic pathology, (83.33%) of cases were benign and (16.66%) were malignant aetiology.There are a variety of other imaging modalities to image temporal bone. Radiological imaging of the petrous bone must meet high standards of topographic representation and spatial resolution. The visualization of small bony structures, lowest radiation dose to the lens, technical factors, interpretation of the images and economic factors were all considered.HRCT outweighs the conventional modalities of investigations and provides higher spatial resolution and better soft tissue contrast. Computed tomography is clearly superior in the imaging trauma, congenital anomalies, neoplasms and infections of temporal bone. Keywords:High-resolution computed tomography, Acoustic neuroma, Histo-pathological diagnosis, Temporal bone, Cholesteatoma
Authors and Affiliations
Sneha Ankush More, Dilip L. Lakhkar, Sushil Kachewar, Pramod Kumar S, Rekha Panpatil
Keywords
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