MYELOGRAPHY VS. COMPUTED TOMOGRAPHY IN THE EVALUATION OF ACUTE THORACOLUMBAR INTERVERTEBRAL DISK EXTRUSION IN CHONDRODYSTROPHIC DOGS

Silke Hecht*, William B. Thomas, Katia Marioni-Henry, Rita L. Echandi, Andrea R. Matthews, William H. Adams

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Myelography and/or computed tomography (CT) are commonly used to evaluate acute intervertebral disk extrusion in chondrodystrophic dogs. The purpose of this study was to evaluate the sensitivity of myelography and two different CT protocols in determining level and lateralization of acute thoracolumbar intervertebral disk extrusion in comparison with surgical findings, investigate interobserver variability, and determine examination duration times. Results of conventional CT, helical CT, and myelography were compared with surgical findings in 19 chondrodystrophic dogs with acute thoracolumbar intervertebral disk extrusion. Agreement among investigators was determined for different imaging modalities, and examination times were recorded. In the diagnosis of level of disk extrusion there was agreement of myelography, conventional CT, and helical CT with surgical findings in 94.7%, 100%, and 94.7% of dogs, respectively (P=0.144). In the diagnosis of level and lateralization of disk extrusion there was agreement of myelography, conventional CT, and helical CT with surgical findings in 78.9%, 87.4%, and 85.3% of dogs, respectively (P=0.328). Interobserver agreement was very good for all imaging modalities (myelography kappa=0.87; conventional CT kappa=0.86; helical CT kappa=0.95). There were significant differences in median examination duration times between helical CT (4 min), conventional CT (8 min), and myelography (32 min) (P <0.001). Both helical and conventional CT appear to be accurate for evaluation of acute thoracolumbar intervertebral disk extrusion in chondrodystrophic dogs and are faster to perform than myelography.

Original languageEnglish
Pages (from-to)353-359
Number of pages7
JournalVeterinary Radiology and Ultrasound
Volume50
Issue number4
DOIs
Publication statusPublished - 2009
EventAnnual Scientific Conference of the American-College-of-Veterinary-Radiology - San Antonio, United Kingdom
Duration: 21 Oct 200825 Oct 2008

Keywords

  • canine
  • computed tomography
  • intervertebral disk extrusion
  • myelography
  • HERNIATED NUCLEUS PULPOSUS
  • COMPLETE SPINE EVALUATION
  • SCANNING REDUCES COST
  • NEURORADIOGRAPHIC DIAGNOSIS
  • LUMBAR MYELOGRAPHY
  • CT-MYELOGRAPHY
  • DISEASE
  • IOHEXOL
  • DECOMPRESSION
  • PROTRUSION

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