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October 1986

Computed Tomographic Three-Dimensional Localization and Compositional Evaluation of Intraocular and Orbital Foreign Bodies

Author Affiliations

From the Neuroradiology Division, the Russell H. Morgan Department of Radiology and Radiological Sciences (Drs Zinreich and Rosenbaum, and Ms Quinn and Mr Hadfield) and the Orbital Unit, The Wilmer Eye Institute (Drs Miller and Aguayo), The Johns Hopkins Medical Institutions, Baltimore.

Arch Ophthalmol. 1986;104(10):1477-1482. doi:10.1001/archopht.1986.01050220071029

• A software program designed for the Siemens Somatom DR3 computed tomographic (CT) scanner provides improved diagnosis, localization, and etiologic description of intraocular and orbital foreign bodies. The program allows information to be analyzed in two different display formats. One format is that of multiplanar reconstruction of the eye and orbit, including an "oblique CT cube" image. This format produces an accurate "three-dimensional" display of both in vitro and in vivo intraocular and orbital foreign bodies. The second display format is that of a histogram. Using this analytic mode, nonmetallic intraocular and intraorbital foreign bodies can be differentiated from each other and from metallic foreign bodies, although individual metallic foreign bodies cannot be identified with respect to specific composition. The information provided by these two display formats substantially aids the clinician in the diagnosis and management of foreign bodies located within the orbit, particularly those located within the eye.

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