Suojanen J, Wang A M, Winston K R
Department of Radiology, Harvard Medical School, Boston, MA.
J Comput Assist Tomogr. 1988 Mar-Apr;12(2):346-8. doi: 10.1097/00004728-198803000-00033.
We present a patient with an intraspinal, high-signal-intensity lesion in the lumbosacral region on T1-weighted magnetic resonance images and a thin line of signal void between this region and the CSF on T2-weighted images. These findings were interpreted initially as representing an extradural spinal lipoma. However, CT revealed an intrathecal collection of iophendylate (Pantopaque), which was subsequently removed via a lumbar puncture. The apparent separation of Pantopaque from the CSF (seen on T2-weighted images and interpreted as the dura) was probably caused by chemical shift artifact, chemical shift contour, and/or CSF motion artifact.
我们报告一例患者，其在T1加权磁共振图像上腰段脊髓区域有一高信号强度病变，在T2加权图像上该区域与脑脊液之间有一条信号缺失的细线。这些表现最初被解释为硬膜外脊髓脂肪瘤。然而，CT显示鞘内有碘苯酯（碘油）聚集，随后通过腰椎穿刺将其清除。碘苯酯与脑脊液之间明显的分隔（在T2加权图像上可见并被解释为硬脑膜）可能是由化学位移伪影、化学位移轮廓和/或脑脊液运动伪影所致。
