Dinosaur tail sign on spinal MRI in a patient with postdural puncture headache
Dinosaur tail sign on spinal MRI in a patient with postdural puncture headache
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硬膜穿刺后头痛患者脊髓 MRI 上的恐龙尾征
DOI：
10.1136/bcr-2017-221447
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发表时间：
2017
期刊：
影响因子：
0.9
通讯作者：
Mase Mitsuhito
中科院分区：
文献类型：
--
作者：
Sakurai Keita;Morimoto Satoru;Kameyama Masashi;Mase Mitsuhito
图1硬膜穿刺前（A，D）和穿刺后（B，C，E，F）的序列MRM和FST 2 WI。与MRM上微妙的椎旁高信号（箭头，B）相反，矢状FST 2 WI显示特征性的背侧硬膜外脂肪组织，由棘间弓形高信号（虚线，E）划分，导致“恐龙尾征”和轻微的硬膜外高信号（箭头，E）。症状改善时特异性信号变化消失（F）。FST 2 WI，脂肪抑制T2加权像; MRM，MR脊髓造影。
Figure 1 Serial MRM and FST2WI before (A, D) and after a dural puncture (B, C, E, F). In contrast to subtle paraspinal hyperintensities on MRM (arrows, B), sagittal FST2WI shows characteristic dorsal epidural fat tissues demarcated by interspinous arched hyperintensities (dash lines, E) contributing to the ‘Dinosaur tail sign’and slight epidural hyperintensity (arrowhead, E). Pathognomonic signal changes disappear on symptom improvement (F). FST2WI, fat-suppressed T2-weighted image; MRM, MR myelography.