Role of high resolution computed tomography in the evaluation of temporal bone lesions: our experience

Abstract

Background: High resolution computed tomography (HRCT) is a modification of routine computed tomography. It provides visual information of the minute structural details of the temporal bone. The present study aimed at studying the pathological processes of the temporal bone and their extent using HRCT. Methods: This prospective study was done by taking HRCT of the temporal bone in 50 patients who presented to us with clinical features of temporal bone diseases. Both contrast and no enhanced images were obtained by taking 2mm sections using ultra high algorithm in both coronal and axial planes. The results were then analysed statistically. Results: Amongst the 50 cases, infection was the most common pathology affecting the temporal bone.  Neoplasms formed the second largest group of lesions with acoustic neuroma being the most common tumour. Conclusions: HRCT is a revolutionary imaging tool in evaluating the various pathologies affecting the temporal bone. It identifies the hidden areas of the temporal bone. It also lays down an anatomical roadmap for the surgeon preoperatively.