Joslyn, S., Richards, S., Boroffka, S., Mitchell, M., Hammond, G. and Sullivan, M. (2014) Magnetic resonance imaging contrast enhancement of extra-ocular muscles in dogs with no clinical evidence of orbital disease. Veterinary Radiology and Ultrasound, 55(1), pp. 63-67. (doi: 10.1111/vru.12083)
Full text not currently available from Enlighten.
Abstract
Enhancement of extra-ocular muscles has been reported in cases of orbital pathology in both veterinary and medical magnetic resonance imaging. We have also observed this finding in the absence of orbital disease. The purpose of this retrospective study was to describe extra-ocular muscle contrast enhancement characteristics in a group of dogs with no known orbital disease. Magnetic resonance images (MRI) from dogs with no clinical evidence of orbital disease and a reportedly normal MRI study were retrieved and reviewed. Contrast enhancement percentages of the medial, lateral, ventral, and dorsal rectus muscles were calculated based on signal-to-noise ratios that were in turn determined from hand-traced regions of interest in precontrast, immediate postcontrast and 10-min postcontrast scans. Comparison measurements were made in the pterygoid muscle. Contrast enhancement of the extra-ocular muscles was observed in all patients (median contrast enhancement percentage 45.0%) and was greater than that of pterygoid muscle (median contrast enhancement percentage 22.7%). Enhancement of the extra-ocular muscles persisted 10 min after contrast administration (median contrast enhancement percentage 43.4%). Findings indicated that MRI contrast enhancement of extra-ocular muscles is likely normal in dogs.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Sullivan, Professor Martin and Joslyn, Mr Stephen and Hammond, Dr Gawain |
| Authors: | Joslyn, S., Richards, S., Boroffka, S., Mitchell, M., Hammond, G., and Sullivan, M. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine |
| Journal Name: | Veterinary Radiology and Ultrasound |
| ISSN: | 1058-8183 |
| ISSN (Online): | 1740-8261 |
University Staff: Request a correction | Enlighten Editors: Update this record
Altmetric
Altmetric