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ISSN 2063-5346
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Radiological Evaluation of Laryngotracheal Stenosis

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Doaa Ibrahim Hasan, Marwa Elsayed Abd Elhamed, Arig Akram Awad, Khaled Mohamed Altaher, Ahmed Mohamed El-Maghraby
» doi: 10.53555/ecb/2023.12.Si12.225

Abstract

Background: The Incidence of laryngotracheal stenosis is increasing nowadays due to increasing incidence of prolonged endotracheal intubations with increasing incidence of polytrauma, neurovascular accidents, and complex surgical procedures with subsequent intensive care unit’s admission and intubation. Several surgical procedures have been used to treat laryngotracheal stenosis. Choice of procedure depends upon age of patient, site of stenosis, nature of stenosis, etiology and general condition of patient. Recent state-of-the-art computed tomography and improved three-dimensional (3-D) postprocessing techniques have revolutionized the capability of visualizing airway pathology, offering physicians an advanced view of pathology and allowing for appropriate management planning. Imaging of the trachea-bronchial tree has improved recently, in large part due to the advancements of computed tomography (CT), allowing for volumetric isotropic voxel imaging, and its associated improvements in post-processing software that allows for advanced 3-Dvisualization. Thus, airway imaging has become a tool that physicians can use to help plan interventional procedures, such as bronchoscopy, stent placement, surgery and subsequent follow-up. It is clear that airway imaging competes with invasive bronchoscopy as a choice in establishing a diagnosis. CT neck examinations are performed with a single breath hold from the base of the skull to the lung apices, an area that measures approximately 24 cm in craniocaudal dimension, and 80 axial sections 3 mm thick are obtained in 8–12 seconds. The raw data are subsequently reconstructed using a soft-tissue kernel (B31f, Somatom Definition Flash, Siemens Healthineers, Boston, Mass), field of view of 180 mm, and section thickness of 0.75 mm at increments of 0.5 mm.

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