【摘要】 探讨低场MRI诊断急性蛛网膜下腔出血的价值。对80例临床疑诊急性蛛网膜下腔出血的病人行MRI检查，扫描机为ASM－015P，采用SE序列，参数T2，WI≤T的2000／TE100ms，所有病例分别经腰穿、手术或治疗后复查证实，并与化脓性脑膜炎、结核性脑膜炎等脑脊液蛋白量增高的疾病进行了鉴别，与脑出血破入脑室或溢人蛛网膜下腔者进行对照。结果显示本组病例在低场MRI条件下于病变区脑沟（裂池）等蛛网膜下肢T2WI均出现异常高亮脑脊液信号。探其原因为蛛网膜下腔出血可延长T2值。脑脊液蛋白量高的其它疾病不出现异常高亮信号。提示低场磁共振成像对急性蛛网膜下腔出血有较大的诊断价值。更多还原

【Abstract】 Objeetive: To search for diagnostic value of acute subarachnoid hemorrhage (ASAH) hy low-field magnetic resonance imaging (MRI). Maerials and methods: 80 cases of suspected ASAH byphyicians were prospectively studied with ASM-0. 15 p MR Scanner.The SE sequences was chosen with T2WI≤Th 2000/TE 1000 ms. All cases were confirmed as ASAH by spinal p uncture, operation as well as posetherapeutic cheek aspectively. The comparison between ASAH and the high proein diseases of cerebral spinal fluid(CSF) such as suppurative meningitis, tuberoulous meningitis etc was performed. Mean while. MRI of ASAH and cerebral hemorrhage or intraventricular hemorrhage flowing into subarachnoid space was compared. Result: All cases of ASAH T2WI displied abnormal high signal of CSF under the circumstance of low-field MR scnning, because the ASAH can increase the T2 value the other cases containning high protein in CSF have no formed the abnormal high signal by low-field MRI. Conclusion: There is greatly diagnostic value by low-field MRI for ASAH.更多还原