Efficacy of Detection of Intraocular and Ocular Adnexel Plastic Foreign Bodies by Magnetic Resonance (MR) and Computed Tomography (CT) Imaging in the Goat
Abstract
The purpose of this study was to determine the efficacy of CT and MR in detecting plastic foreign bodies (FB's) in a live goat model. FB's were surgically implanted in 12 study eyes and orbits. 12 control eyes were surgically manipulated with no plastic implanted. Plain film, CT and MR studies were performed. CT and MR studies were with and without intravenous contrast. Masked evaluators assessed images. True positive FB detection in plain film was 0.5%. True positive FB detection in study eyes was 30% by CT and 34% by MR (p=0.3664). False negative rate was 70% (CT) and 66% (MR) (p=0.3664). FBs were frequently misidentified in control eyes. The addition of contrast did not significantly affect FB detection. Plain film, CT and MR inadequately detect intraocular and intraorbital plastic FB's. The addition of contrast does not improve efficacy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1997
- Accession Number
- ADB233374
Entities
People
- Lilia A. Fannin
Organizations
- Madigan Army Medical Center