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Imaging evaluation reveals high-quality anatomical rendering of temporal bone landmarks alongside pseudoforamen artifacts, suggesting utility as a surgical adjunct.
Three-dimensional (3D) surface renderings of the temporal bone were created from routine axial computed tomographic (CT) images in 15 subjects and in cadaver specimens. The displayed anatomy was correlated with these specimens, as well as with images from the routine study. Six sets of viewing angles were derived for optimal display of surgically important surface landmarks, such as the suprameatal triangle and supramastoid crest. The 3D CT images were found to be of excellent quality and permitted a global view of the temporal bone surface anatomy. Bone depletion artifacts ("pseudoforamina") posed a potentially serious problem in evaluating the tegmen and wall of the sigmoid sulcus, being present in eight of 20 cases. Three-dimensional CT may be a useful adjunct to routine temporal bone imaging.
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Howard et al. (1990) studied this question.
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