Monajati A, Wayne W S, Rauschning W, Ekholm S E
Department of Diagnostic Radiology/Nuclear Imaging, University of Rochester School of Medicine and Dentistry, NY 14621.
AJNR Am J Neuroradiol. 1987 Sep-Oct;8(5):893-900.
To define the anatomy of the cauda equina nerve roots by MR imaging, the lower spine of 14 normal volunteers was imaged using a high-field surface-coil technique. A total of 56 sagittal and 56 axial MR sections (eight selected slices from each case) were correlated with undistorted anatomic sections from cadaver spine specimens, and the visualization of the nerve roots was assessed. In addition, MR images of three patients with infiltrating or seeding tumors affecting the cauda equina were analyzed. Seventy-eight percent of the MR sections from normal cases clearly showed the anatomy of the cauda equina nerve roots. The nerve roots were fairly shown in 17% of the sections; and false findings (presumably caused by CSF pulsation) were observed in the remaining 5%. Coronal imaging provided excellent anatomic views of the nerve roots within the intervertebral foramina. Morphologic alterations in the pathologic cases were correctly shown when both T1- and T2-weighted imaging were used. In conclusion, MR proved efficient in viewing the cauda equina region.
为通过磁共振成像（MR）定义马尾神经根的解剖结构，使用高场表面线圈技术对14名正常志愿者的下脊柱进行成像。共56个矢状面和56个横断面MR切片（每个病例选8个切片）与尸体脊柱标本的未变形解剖切片进行对照，并评估神经根的显示情况。此外，分析了3例患有累及马尾的浸润性或播散性肿瘤患者的MR图像。正常病例的MR切片中78%清晰显示了马尾神经根的解剖结构。17%的切片中神经根显示尚可；其余5%观察到假阳性结果（可能由脑脊液搏动引起）。冠状面成像能很好地显示椎间孔内神经根的解剖结构。同时使用T1加权成像和T2加权成像时，病理病例中的形态学改变能正确显示。总之，MR被证明在观察马尾区域方面是有效的。
