Improving Reliability of MRI Lumbar Spinal Stenosis Assessment Across Radiology and Spine Specialties…

Cohort studyAcademic radiology· Jul 2026

Improving Reliability of MRI Lumbar Spinal Stenosis Assessment Across Radiology and Spine Specialties: Impact of a Structured Education Intervention.

Pamela J Walsh, Un Jung Lee, Jason S Lipetz, Daniel M Walz

SpineCohort studyDiagnosisQ1IF 3.7

Structured Magnetic Resonance Imaging classification training improved lumbar spinal stenosis grading accuracy across specialties

Improving Reliability of MRI Lumbar Spinal Stenosis Assessment Across Radiology and Spine Specialties: Impact of a Structured Education Intervention.

Pamela J Walsh … Daniel M Walz

Academic radiology · Jul 2026

Background

Magnetic Resonance Imaging (Magnetic Resonance Imaging) is the preferred modality for evaluating Lumbar Spinal Stenosis (Lumbar Spinal Stenosis), yet grading remains subjective and inconsistent.

Purpose

The objective of this study is to assess the impact of a structured educational intervention using a classification system, on correctness and interobserver reliability of Magnetic Resonance Imaging Lumbar Spinal Stenosis grading among radiology and non-radiology spine physicians.

Methods

Health Insurance Portability and Accountability Act-compliant, Institutional Review Board-approved retrospective study analyzed 114 lumbar disc levels.

Results

grading accuracy rose after structured training, more scans graded correctly

More results

Cases discrepant more than one grade decreased from 3.7% to 2.0% (p = 0.002).

Interobserver reliability improved significantly, with intraclass correlation coefficient increasing from 0.71 (95% CI: 0.65-0.76) to 0.75 (95% CI: 0.70-0.80); p = 0.030.

More results

Pre-intervention, musculoskeletal group had the highest percentage of cases correct (67.7%) and lowest discrepant cases (1.6%) and post-intervention, neuroradiology had the highest correct (64.9%) and lowest discrepant (0.7%).

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Conclusion

Education and implementation of a standardized Magnetic Resonance Imaging Lumbar Spinal Stenosis classification system significantly improved grading concordance and interobserver reliability across a large multidisciplinary physician cohort.

Improving Reliability of MRI Lumbar Spinal Stenosis Assessment Across Radiology and Spine Specialties: Impact of a Structured Education Intervention.

Improving Reliability of MRI Lumbar Spinal Stenosis Assessment Across Radiology and Spine Specialties: Impact of a Structured Education Intervention.

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