Journal article
Qualitative assessment of Cervical spinal stenosis: Observer variability on CT and MR images
American journal of neuroradiology : AJNR, Vol.24(4), pp.766-769
2003
PMID: 12695220
Abstract
Background and purpose: Several studies have been undertaken to validate quantitative methods of evaluating cervical spinal stenosis. This study was performed to assess the degree of interobserver and intraobserver agreement in the qualitative evaluation of cervical spinal stenosis on CT myelograms and MR images.
Methods: Cervical MR images and CT myelograms of 38 patients were evaluated retrospectively. Six neuroradiologists with various backgrounds and training independently assessed the level, degree, and cause of stenosis on either MR images or CT myelograms. Unknown to the evaluators, 16 of the patients were evaluated twice to determine intraobserver variability.
Results: Interobserver agreement among the radiologists with regard to level, degree, and cause of stenosis on CT myelograms showed kappa values of 0.50, 0.26, and 0.32, respectively, and on MR images showed kappa values of 0.60, 0.31, and 0.22, respectively. Intraobserver agreement with regard to level, degree, and cause of stenosis on CT myelograms showed mean kappa values of 0.69, 0.41, and 0.55, respectively, and on MR images showed mean kappa values of 0.80, 0.37, and 0.40, respectively.
Conclusion: MR imaging and CT myelographic evaluation of cervical spinal stenosis by using current qualitative methods results in significant variation in image interpretation.
Details
- Title: Subtitle
- Qualitative assessment of Cervical spinal stenosis: Observer variability on CT and MR images
- Creators
- Jeffrey S STAFIRA - Department of Radiological Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United StatesJagadeesh R SONNAD - Department of Radiological Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United StatesWilliam T. C YUH - Department of Radiological Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United StatesDavid R HUARD - Department of Radiological Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United StatesRobin E ACKER - Department of Radiological Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United StatesDan L NGUYEN - Department of Radiological Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United StatesJoan E MALEY - Department of Radiology, the University of Iowa College of Medicine, Iowa City, United StatesFaridali G RAMJI - Department of Radiological Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United StatesWen-Bin LI - Department of Radiological Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, United StatesChristopher M LOFTUS - Department of Neurosugery, University of Oklahoma Health Sciences Center, Oklahoma City, United States
- Resource Type
- Journal article
- Publication Details
- American journal of neuroradiology : AJNR, Vol.24(4), pp.766-769
- Publisher
- American Society of Neuroradiology; Oak Brook, IL
- PMID
- 12695220
- ISSN
- 0195-6108
- eISSN
- 1936-959X
- Language
- English
- Date published
- 2003
- Academic Unit
- Radiology; Otolaryngology
- Record Identifier
- 9984051539002771
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