Postacchini F, Amatruda A, Morace G B, Perugia D
I Clinica Ortopedica dell'Università, La Sapienza, Roma.
Ital J Orthop Traumatol. 1991 Sep;17(3):327-37.
Twenty-two patients with clinical symptoms suggesting lumbar spinal canal stenosis underwent myelography, computed tomography (CT), and magnetic resonance imaging (MRI). Patients were divided into two groups according to myelographic findings. Group I included 19 cases in which myelograms showed spinal canal stenosis, and group II consisted of 3 patients with myelograms negative for this condition. MRI showed uniform narrowing of the dural sac, indentations on the posterior aspect, or interruption of the outline of the sac in the sagittal scans and reduced area of the sac in the transverse scans. In group I patients, the diagnostic accuracy of MRI was greater than that of CT and myelography. In Group II patients, all of whom had moderate or severe lumbar scoliosis, MRI suggested spinal canal stenosis in contrast with myelography. In spinal canal stenosis surgery may be planned on the basis of MRI findings alone, except in scoliotic patients.
22例有腰椎管狭窄临床症状的患者接受了脊髓造影、计算机断层扫描（CT）和磁共振成像（MRI）检查。根据脊髓造影结果将患者分为两组。第一组包括19例脊髓造影显示椎管狭窄的病例，第二组由3例脊髓造影未显示该情况的患者组成。MRI在矢状面扫描中显示硬脊膜囊均匀变窄、后方有压迹或囊轮廓中断，在横断面扫描中显示囊面积减小。在第一组患者中，MRI的诊断准确性高于CT和脊髓造影。在第二组患者中，他们均有中度或重度腰椎侧弯，与脊髓造影结果相反，MRI提示椎管狭窄。除脊柱侧弯患者外，椎管狭窄手术可仅根据MRI检查结果来规划。
