Department of Neurosurgery, Trondheim University Hospital, Trondheim, Norway ; Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway ; National Advisory Unit on Spinal Surgery, Trondheim University Hospital, Trondheim, Norway.
Department of Neurosurgery, Trondheim University Hospital, Trondheim, Norway ; Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway.
Global Spine J. 2015 Oct;5(5):406-10. doi: 10.1055/s-0035-1551651. Epub 2015 May 6.
Study Design Validation study of a morphological grading system for central lumbar spinal stenosis. Objective To evaluate and validate the inter- and intraobserver agreement of a morphological grading system for central lumbar spinal stenosis on magnetic resonance imaging between neurosurgeons and radiologists. Methods Two neurosurgeons and two radiologists independently assessed the morphological grading of lumbar spinal stenosis on pretreatment magnetic resonance imaging of 84 patients. Inter- and intrarater agreements were calculated by comparing the observers' evaluations level to level on the grading method. The results of both clinicians were compared with the assessment of both radiologists. Results On axial magnetic resonance images, 189 lumbar disk levels were evaluated for the grade of stenosis. The interobserver agreement between the clinicians was substantial. The interobserver agreement between clinician 1 and both radiologists was substantial, and it was moderate between clinician 2 and both radiologists. The clinicians' intraobserver agreement was almost perfect, and the radiologists' intraobserver agreement was substantial. Conclusions The interobserver agreement of this morphological grading for lumbar spinal stenosis was high between both the clinicians and radiologists, whereas the intraobserver agreement was almost perfect. Experienced clinicians may safely evaluate lumbar magnetic resonance images using this morphological grading for central lumbar spinal stenosis.
一种用于中央型腰椎椎管狭窄症的形态学分级系统的验证研究。目的：评估和验证神经外科医生和放射科医生在磁共振成像上对中央型腰椎椎管狭窄症的形态学分级系统的观察者内和观察者间一致性。方法：两名神经外科医生和两名放射科医生独立评估了 84 例患者的预处理磁共振成像的腰椎椎管狭窄症的形态学分级。通过比较观察者在分级方法上的评估水平来计算观察者内和观察者间的一致性。将两位临床医生的结果与两位放射科医生的评估结果进行比较。结果：在轴向磁共振图像上，评估了 189 个腰椎间盘水平的狭窄程度。临床医生之间的观察者间一致性较高。临床医生 1 与两位放射科医生之间的观察者间一致性较高，而临床医生 2 与两位放射科医生之间的观察者间一致性为中度。临床医生的观察者内一致性几乎为完美，放射科医生的观察者内一致性为高。结论：该形态学分级系统对腰椎椎管狭窄症的观察者间一致性在临床医生和放射科医生之间均较高，而观察者内一致性几乎为完美。有经验的临床医生可以使用这种用于中央型腰椎椎管狭窄症的形态学分级来安全地评估腰椎磁共振图像。
