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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。
To investigate the value of low field MRI in the diagnosis of acute subarachnoid hemorrhage. 80 patients with clinical suspected acute subarachnoid hemorrhage underwent MRI examination, the scanner was ASM-015P, the SE sequence, parameters T2, WI ≤ T 2000 / TE100ms, all cases were lumbar puncture, surgery or treatment After the review confirmed that, and with purulent meningitis, cerebrospinal meningitis and other cerebrospinal fluid protein increased disease identification, and cerebral hemorrhage into the ventricle or overflow into the subarachnoid were controlled. The results showed that in this group of patients under low field MRI conditions in the lesion area sulcus (fissure) and other subarachnoid T2WI were abnormal highlight cerebrospinal fluid signal. Exploring the reason for subarachnoid hemorrhage can extend the T2 value. Other diseases with high cerebrospinal fluid protein do not show abnormally bright signals. Prompt low-field magnetic resonance imaging of acute subarachnoid hemorrhage have a greater diagnostic value.