Eberhardt K E, Hollenbach H P, Tomandl B, Huk W J
Division of Neuroradiology, Department of Neurosurgery, University of Erlangen-Nuremberg, Schwabachanlage 6, D-91 054 Erlangen, Germany.
Eur Radiol. 1997;7(5):737-42. doi: 10.1007/BF02742936.
Conventional myelography was compared with a new type of MR technique using a fat-suppressing 3D fast imaging with steady precession (FISP) sequence for diagnosis of the lumbar root compression syndrome. 80 patients with discogenic disease in the lumbar spine were examined with a 1.0-T whole-body MR system (Siemens Magnetom Impact, Erlangen, Germany). A strongly T2(*)-weighted 3D FISP sequence was applied in the sagittal orientation. To obtain fat suppression, a frequency-selective 1-3-3-1 prepulse was applied prior to the imaging sequence. The acquired 3D data set was evaluated using a maximum intensity projection (MIP) program. The measurement time was 7 min, 47 s. Magnetic resonance myelography has significant advantages over conventional myelography, particularly in cases of extreme spinal canal stenosis. Compared with the conventional method, this new MR technique shows comparable sensitivity in the visualization of the spinal nerve roots in the lumbar spine.
将传统脊髓造影与一种新型磁共振（MR）技术进行比较，该技术使用脂肪抑制三维稳态进动快速成像（FISP）序列来诊断腰椎神经根压迫综合征。对80例腰椎间盘源性疾病患者使用1.0-T全身MR系统（德国埃尔兰根西门子Magnetom Impact）进行检查。在矢状位应用强T2*加权三维FISP序列。为了实现脂肪抑制，在成像序列之前应用频率选择性1-3-3-1预脉冲。使用最大强度投影（MIP）程序评估采集的三维数据集。测量时间为7分47秒。磁共振脊髓造影相比传统脊髓造影具有显著优势，尤其是在极重度椎管狭窄的病例中。与传统方法相比，这种新的MR技术在显示腰椎脊神经根方面具有相当的敏感性。
