Interobserver Reliability between MRI, CT-myelogram and Myelogram in the Evaluation of Lumbar Spinal Stenosis / 대한정형외과학회잡지
The Journal of the Korean Orthopaedic Association
; : 66-71, 2003.
Article
in Ko
| WPRIM
| ID: wpr-655595
Responsible library:
WPRO
ABSTRACT
PURPOSE: We designed this study to evaluate the interobserver reliability of magnetic resonance imaging (MRI), post-myelographic computed tomography (CT-myelogram) and myelography for the diagnosis of lumbar spinal stenosis. MATERIALS AND METHODS: Thirty two patients with lumbar spinal stenosis were evaluated preoperatively by MRI, CT-myelography, and myelography by four observers. For each set of scans, the examiners assessed the presence or absence of; 1) intervertebral disk protrusion, 2) facet arthrosis, 3) ligamentum flavum hypertrophy, and 4) nerve root impingement. The severities of 1) central, 2) lateral, 3) foraminal and 4) entire spinal stenosis were graded using a four-point scale range from 1 (no stenosis) to 4 (severe stenosis). RESULTS: Kappa statistical analysis revealed moderate interobserver agreement in terms of disk protrusion (0.49), nerve root impingement (0.42) and lateral stenosis grade based on MRI. Low levels of agreement were found for facet arthrosis and ligamentum flavum hypertrophy. Relatively higher levels of agreement were found for nerve root impingement, lateral stenosis and entire stenosis, graded by MRI and for central stenosis graded by myelography. CONCLUSION: The results of this study reflect that MRI showed relatively higher levels of interobserver reliability than the other diagnostic modalities in the evaluation of patients with lumbar spinal stenosis.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Spinal Stenosis
/
Magnetic Resonance Imaging
/
Myelography
/
Ligamentum Flavum
/
Constriction, Pathologic
/
Diagnosis
/
Hypertrophy
/
Intervertebral Disc
Type of study:
Diagnostic_studies
Limits:
Humans
Language:
Ko
Journal:
The Journal of the Korean Orthopaedic Association
Year:
2003
Type:
Article