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Association of preoperative magnetic resonance imaging findings with surgical features in Dachshunds with thoracolumbar intervertebral disk extrusion.
J Am Vet Med Assoc. 2008 Mar 01; 232(5):702-8.JA

Abstract

OBJECTIVE

To evaluate the accuracy of specific magnetic resonance imaging (MRI) sequences in determining the site, lateralization, and extent of extruded intervertebral disk material (EIDM), compared with surgical findings, in Dachshunds with thoracolumbar intervertebral disk extrusion (TLIDE).

DESIGN

Prospective clinical study.

SAMPLE POPULATION

16 Dachshunds with clinical signs of intervertebral disk disease.

PROCEDURES

Preoperative T1-weighted, T2-weighted, and short tau inversion recovery (STIR) MRI measurements and description of the location of EIDM were compared with intraoperative measurements and determination of the EIDM position.

RESULTS

The T12-13 intervertebral disk space was the most frequent site of EIDM (6/16 dogs). The EIDM lateralized with equal frequency to the left and right sides; no central extrusions were seen. There was moderate to substantial agreement (kappa, 0.59) between MRI and surgical findings for evaluation of the craniocaudal distribution of the EIDM. For measurement of the length of EIDM, the T1-weighted, T2-weighted, and STIR sequences had a mean error of -1.15, -0.38, and -1.93 mm, respectively; concordance correlation coefficients were 0.666, 0.904, and 0.458, respectively. Mean absolute errors were 2.54, 1.35, and 2.90 mm, respectively; these values did not differ significantly.

CONCLUSIONS AND CLINICAL RELEVANCE

In the thoracolumbar vertebral column of Dachshunds with clinical signs of intervertebral disk disease, MRI is a valuable technique for determining location and craniocaudal length of EIDM. Compared with T1-weighted and STIR images, T2-weighted images appeared to be more accurate and precise and are potentially more reliable for determination of the length of EIDM in those dogs.

Authors+Show Affiliations

Department of Companion Animal Clinical Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa, 0110.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18312176

Citation

Naudé, Stephanus H., et al. "Association of Preoperative Magnetic Resonance Imaging Findings With Surgical Features in Dachshunds With Thoracolumbar Intervertebral Disk Extrusion." Journal of the American Veterinary Medical Association, vol. 232, no. 5, 2008, pp. 702-8.
Naudé SH, Lambrechts NE, Wagner WM, et al. Association of preoperative magnetic resonance imaging findings with surgical features in Dachshunds with thoracolumbar intervertebral disk extrusion. J Am Vet Med Assoc. 2008;232(5):702-8.
Naudé, S. H., Lambrechts, N. E., Wagner, W. M., & Thompson, P. N. (2008). Association of preoperative magnetic resonance imaging findings with surgical features in Dachshunds with thoracolumbar intervertebral disk extrusion. Journal of the American Veterinary Medical Association, 232(5), 702-8. https://doi.org/10.2460/javma.232.5.702
Naudé SH, et al. Association of Preoperative Magnetic Resonance Imaging Findings With Surgical Features in Dachshunds With Thoracolumbar Intervertebral Disk Extrusion. J Am Vet Med Assoc. 2008 Mar 1;232(5):702-8. PubMed PMID: 18312176.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Association of preoperative magnetic resonance imaging findings with surgical features in Dachshunds with thoracolumbar intervertebral disk extrusion. AU - Naudé,Stephanus H, AU - Lambrechts,Nicolaas E, AU - Wagner,Wencke M, AU - Thompson,Peter N, PY - 2008/3/4/pubmed PY - 2008/4/22/medline PY - 2008/3/4/entrez SP - 702 EP - 8 JF - Journal of the American Veterinary Medical Association JO - J Am Vet Med Assoc VL - 232 IS - 5 N2 - OBJECTIVE: To evaluate the accuracy of specific magnetic resonance imaging (MRI) sequences in determining the site, lateralization, and extent of extruded intervertebral disk material (EIDM), compared with surgical findings, in Dachshunds with thoracolumbar intervertebral disk extrusion (TLIDE). DESIGN: Prospective clinical study. SAMPLE POPULATION: 16 Dachshunds with clinical signs of intervertebral disk disease. PROCEDURES: Preoperative T1-weighted, T2-weighted, and short tau inversion recovery (STIR) MRI measurements and description of the location of EIDM were compared with intraoperative measurements and determination of the EIDM position. RESULTS: The T12-13 intervertebral disk space was the most frequent site of EIDM (6/16 dogs). The EIDM lateralized with equal frequency to the left and right sides; no central extrusions were seen. There was moderate to substantial agreement (kappa, 0.59) between MRI and surgical findings for evaluation of the craniocaudal distribution of the EIDM. For measurement of the length of EIDM, the T1-weighted, T2-weighted, and STIR sequences had a mean error of -1.15, -0.38, and -1.93 mm, respectively; concordance correlation coefficients were 0.666, 0.904, and 0.458, respectively. Mean absolute errors were 2.54, 1.35, and 2.90 mm, respectively; these values did not differ significantly. CONCLUSIONS AND CLINICAL RELEVANCE: In the thoracolumbar vertebral column of Dachshunds with clinical signs of intervertebral disk disease, MRI is a valuable technique for determining location and craniocaudal length of EIDM. Compared with T1-weighted and STIR images, T2-weighted images appeared to be more accurate and precise and are potentially more reliable for determination of the length of EIDM in those dogs. SN - 0003-1488 UR - https://www.unboundmedicine.com/medline/citation/18312176/Association_of_preoperative_magnetic_resonance_imaging_findings_with_surgical_features_in_Dachshunds_with_thoracolumbar_intervertebral_disk_extrusion_ L2 - https://avmajournals.avma.org/doi/10.2460/javma.232.5.702?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -