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Intraobserver and interobserver agreement for results of low-field magnetic resonance imaging in dogs with and without clinical signs of disk-associated wobbler syndrome

Steven De Decker UGent, Ingrid Gielen UGent, Luc Duchateau UGent, Johann Lang, Ruth Dennis, Nuria Corzo-Menendez, Henri van Bree UGent, Iris Van Soens UGent, Dominique Binst UGent and Tim Waelbers UGent, et al. (2011) JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION. 238(1). p.74-80
abstract
Objective: To determine interobserver and intraobserver agreement for results of low-field magnetic resonance imaging (MRI) in dogs with and without disk-associated wobbler syndrome (DAWS). Design: Validation study. Animals: 21 dogs with and 23 dogs without clinical signs of DAWS. Procedures: For each dog, MRI of the cervical vertebral column was performed. The MRI studies were presented in a randomized sequence to 4 board-certified radiologists blinded to clinical status. Observers assessed degree of disk degeneration, disk-associated and dorsal compression, alterations in intraspinal signal intensity (PSI), vertebral body abnormalities, and new bone formation and categorized each study as originating from a clinically affected or clinically normal dog. Interobserver agreement was calculated for 44 initial measurements for each observer. Intraobserver agreement was calculated for 11 replicate measurements for each observer. Results: There was good interobserver agreement for ratings of disk degeneration and vertebral body abnormalities and moderate interobserver agreement for ratings of disk-associated compression, dorsal compression, alterations in ISI, new bone formation, and suspected clinical status. There was very good intraobserver agreement for ratings of disk degeneration, disk-associated compression, alterations in ISI, vertebral body abnormalities, and suspected clinical status. There was good intraobserver agreement for ratings of dorsal compression and new bone formation. Two of 21 clinically affected dogs were erroneously categorized as clinically normal, and 4 of 23 clinically normal dogs were erroneously categorized as clinically affected. Conclusions and Clinical Relevance: Results suggested that variability exists among observers with regard to results of MRI in dogs with DAWS and that MRI could lead to false-positive and false-negative assessments.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
SPONDYLOMYELOPATHY, MRI, FEATURES, STRENGTH, ARTIFACTS, OBSERVER AGREEMENT, DOBERMAN-PINSCHER, SPINAL-CORD COMPRESSION, MALFORMATION MALARTICULATION SYNDROME, CERVICAL VERTEBRAL INSTABILITY
journal title
JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION
JAVMA-J. Am. Vet. Med. Assoc.
volume
238
issue
1
pages
74 - 80
Web of Science type
Article
Web of Science id
000285669400020
JCR category
VETERINARY SCIENCES
JCR impact factor
1.791 (2011)
JCR rank
23/141 (2011)
JCR quartile
1 (2011)
ISSN
0003-1488
DOI
10.2460/javma.238.1.74
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
798866
handle
http://hdl.handle.net/1854/LU-798866
date created
2009-12-03 16:40:54
date last changed
2011-07-06 16:07:09
@article{798866,
  abstract     = {Objective: To determine interobserver and intraobserver agreement for results of low-field magnetic resonance imaging (MRI) in dogs with and without disk-associated wobbler syndrome (DAWS).
Design: Validation study.
Animals: 21 dogs with and 23 dogs without clinical signs of DAWS.
Procedures: For each dog, MRI of the cervical vertebral column was performed. The MRI studies were presented in a randomized sequence to 4 board-certified radiologists blinded to clinical status. Observers assessed degree of disk degeneration, disk-associated and dorsal compression, alterations in intraspinal signal intensity (PSI), vertebral body abnormalities, and new bone formation and categorized each study as originating from a clinically affected or clinically normal dog. Interobserver agreement was calculated for 44 initial measurements for each observer. Intraobserver agreement was calculated for 11 replicate measurements for each observer.
Results: There was good interobserver agreement for ratings of disk degeneration and vertebral body abnormalities and moderate interobserver agreement for ratings of disk-associated compression, dorsal compression, alterations in ISI, new bone formation, and suspected clinical status. There was very good intraobserver agreement for ratings of disk degeneration, disk-associated compression, alterations in ISI, vertebral body abnormalities, and suspected clinical status. There was good intraobserver agreement for ratings of dorsal compression and new bone formation. Two of 21 clinically affected dogs were erroneously categorized as clinically normal, and 4 of 23 clinically normal dogs were erroneously categorized as clinically affected.
Conclusions and Clinical Relevance: Results suggested that variability exists among observers with regard to results of MRI in dogs with DAWS and that MRI could lead to false-positive and false-negative assessments.},
  author       = {De Decker, Steven and Gielen, Ingrid and Duchateau, Luc and Lang, Johann and Dennis, Ruth and Corzo-Menendez, Nuria and van Bree, Henri and Van Soens, Iris and Binst, Dominique and Waelbers, Tim and Van Ham, Luc},
  issn         = {0003-1488},
  journal      = {JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION},
  keyword      = {SPONDYLOMYELOPATHY,MRI,FEATURES,STRENGTH,ARTIFACTS,OBSERVER AGREEMENT,DOBERMAN-PINSCHER,SPINAL-CORD COMPRESSION,MALFORMATION MALARTICULATION SYNDROME,CERVICAL VERTEBRAL INSTABILITY},
  language     = {eng},
  number       = {1},
  pages        = {74--80},
  title        = {Intraobserver and interobserver agreement for results of low-field magnetic resonance imaging in dogs with and without clinical signs of disk-associated wobbler syndrome},
  url          = {http://dx.doi.org/10.2460/javma.238.1.74},
  volume       = {238},
  year         = {2011},
}

Chicago
De Decker, Steven, Ingrid Gielen, Luc Duchateau, Johann Lang, Ruth Dennis, Nuria Corzo-Menendez, Henri van Bree, et al. 2011. “Intraobserver and Interobserver Agreement for Results of Low-field Magnetic Resonance Imaging in Dogs with and Without Clinical Signs of Disk-associated Wobbler Syndrome.” Javma-journal of the American Veterinary Medical Association 238 (1): 74–80.
APA
De Decker, S., Gielen, I., Duchateau, L., Lang, J., Dennis, R., Corzo-Menendez, N., van Bree, H., et al. (2011). Intraobserver and interobserver agreement for results of low-field magnetic resonance imaging in dogs with and without clinical signs of disk-associated wobbler syndrome. JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION, 238(1), 74–80.
Vancouver
1.
De Decker S, Gielen I, Duchateau L, Lang J, Dennis R, Corzo-Menendez N, et al. Intraobserver and interobserver agreement for results of low-field magnetic resonance imaging in dogs with and without clinical signs of disk-associated wobbler syndrome. JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION. 2011;238(1):74–80.
MLA
De Decker, Steven, Ingrid Gielen, Luc Duchateau, et al. “Intraobserver and Interobserver Agreement for Results of Low-field Magnetic Resonance Imaging in Dogs with and Without Clinical Signs of Disk-associated Wobbler Syndrome.” JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION 238.1 (2011): 74–80. Print.