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31 - CT Imaging of the Face
from PART III - COMPUTED TOMOGRAPHY
- By Monica Kathleen Wattana, Tareg Bey
Edited by J. Christian Fox, University of California, Irvine
Book:

Clinical Emergency Radiology

Published online:

07 December 2009

Print publication:

29 September 2008, pp 438-456
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Summary

This chapter provides a brief overview of the methods for obtaining computed tomography (CT) images of the face and the facial buttress system of analysis. It presents four main categories of midfacial fractures: orbital blowout, zygoma, maxilla, and mandible. Images in the axial plane are useful in evaluating the zygomatic arch, posterior walls of the maxillary and frontal sinuses, and degree of posterior displacement in Le Fort fractures and the zygomaticomaxillary complex fractures. The zygoma is the second most common fractured midfacial bone after the nasal bones and represents 13% of all craniofacial fractures. Fractures to the maxilla occur unilaterally or bilaterally. Isolated unilateral fractures are uncommon. The use of CT to identify isolated mandibular fractures has been increasing. Non-displaced symphyseal fractures are better viewed using CT because the problem of overlapping spine lucency on plain film is not an issue when using CT.