Pressman B D, Mink J H, Turner R M, Rothman B J
J Comput Assist Tomogr. 1986 Sep-Oct;10(5):817-21. doi: 10.1097/00004728-198609000-00020.
Delineation of the thecal sac in CT can be improved by the presence of intrathecal metrizamide. This may be especially helpful in postoperative patients in whom the landmarks are often obscured by epidural scarring. Metrizamide-enhanced CT was performed on outpatients using 2 1/2 ml metrizamide (170 mg I/ml). Follow-up is available on 40 patients. The procedure was well tolerated with only three instances of severe headache, one case of vomiting, and no reported seizures. Adequate opacification was obtained at 92% of the levels examined with fair opacification at the remainder of the levels. This technique is considered a safe and useful outpatient procedure.
鞘内注入甲泛葡胺可改善CT对硬膜囊的显示。这对于术后患者可能特别有帮助，因为这些患者的解剖标志常常被硬膜外瘢痕遮挡。对门诊患者使用2.5毫升甲泛葡胺（170毫克碘/毫升）进行了甲泛葡胺增强CT检查。对40例患者进行了随访。该操作耐受性良好，仅出现3例严重头痛、1例呕吐，无癫痫发作报告。在92%的检查层面获得了充分的造影剂充盈，其余层面造影剂充盈良好。该技术被认为是一种安全且有用的门诊检查方法。
