Sensitivity of spiral computed tomography scanning for detecting intraocular foreign bodies.

Published

Journal Article

The purpose of this study is to determine whether 3-mm computed tomography (CT) cuts are equivalent to 1-mm CT cuts for detecting small intraocular foreign bodies (IOFBs).Experimental instrument validation study.Seventy-two porcine eyes were divided into three groups. Each group had 0.5 ml of human blood injected into the vitreous cavity and were surgically implanted with IOFBs.Each eye was surgically implanted with 0.5-mm metallic, 0.5-mm glass, or 0.5-mm stone IOFBs. Two additional eyes were left without IOFBs to serve as negative controls.Axial CT images of both 3-mm and 1-mm thickness were obtained and analyzed in masked fashion by two separate neuroradiologists.The sensitivity for detecting 0.5-mm metallic, 0.5-mm glass, and 0.5-mm stone IOFBs with 3-mm CT images was 100%. The sensitivity for detecting 0.5-mm metallic, 0.5-mm glass, and 0.5-mm stone IOFBs with 1-mm CT images was also 100% (confidence interval, 95%; range, 0.88-1.00). Two negative control eyes without IOFBs were also correctly evaluated by the neuroradiologists.With modern spiral CT scanning, 3-mm cuts are as sensitive as 1-mm cuts for detecting small metallic, glass, and stone IOFBs.

Full Text

Duke Authors

Cited Authors

  • Dass, AB; Ferrone, PJ; Chu, YR; Esposito, M; Gray, L

Published Date

  • December 2001

Published In

Volume / Issue

  • 108 / 12

Start / End Page

  • 2326 - 2328

PubMed ID

  • 11733280

Pubmed Central ID

  • 11733280

Electronic International Standard Serial Number (EISSN)

  • 1549-4713

International Standard Serial Number (ISSN)

  • 0161-6420

Digital Object Identifier (DOI)

  • 10.1016/s0161-6420(01)00808-9

Language

  • eng