不同TE T_2*WI序列对各期脑出血检出率的比较研究  

A comparative analysis of detection rate in different phases of cerebral hemorrhage by using different TE T_2*WI sequences

作　　者：崔玉杰[1] 衣慧灵[1] 刘兰祥[1] 刘永利[2] 

机构地区：[1]秦皇岛市第一医院核磁室,河北066000 [2]秦皇岛市第一医院CT室,河北066000

出　　处：《放射学实践》2012年第11期1191-1193,共3页Radiologic Practice

基　　金：秦皇岛市科技局基金(201002B031)

摘　　要：目的:比较不同TE T2*WI序列对各期脑出血的检出率,探讨颅内出血在不同时期的最佳检出方法。方法:以ESWAN序列作为金标准,对已确诊脑出血的18例52个病灶进行不同TE(15、30、45ms)的SPGR T2*WI检查,并对结果进行统计学分析。结果:T2*WI(15、30、45ms)与ESWAN序列对急性期和亚急性I期出血灶的检出率基本相同,而对亚急性期II期、慢性期两者检出率:TE=15ms T2*WI对各期出血灶的总检出率为76.92%,误诊率为0%;TE=30msT2*WI总检出率为88.46%,误诊率为0%;TE=45ms T2*WI检出率为100%,但误诊率为9.6%。与TE=45ms时比较,TE=30ms T2*WI具有扫描时间较短、图像分辨率高的优点。结论:T2*WI(TE=30ms)序列对于脑出血的快速检出具有一定优势。Objective：To compare the SPGR-T2 ＊ WI （TE of 15ms,30ms and 45ms） with ESWAN in the detection rate of cerebral hemorrhage, Summary of intracranial bleeding at different times of the best detection method. Methods：The final diagnosis was proved by ESWAN which was taken as golden standard. T2 ＊ WI with TE of 15,30 and 45ms was per- formed in 18 cases （52 lesions） of cerebral hematoma, the results were statistically analyzed with ESWAN. Results,The de- tecting rates of T2 ＊ WI （15,30,45ms） and ESWAN sequence for acute and subacute phase Ⅰ hemorrhage were basically the same, but for lesions in the subacute phase Ⅱ or chronic phase,there were difference. Compared with the gold standard,the detection rate of TE= 15,30 and 45 ms T2 ＊ WI was 76.92 %,88.46 % and 100.00%, respectively; the rate of misdiagnosis of was 0,0 and 9.6% ,but compared to TE= 45ms, the scan time of TE= 30ms is shorter and image resolution is better. Conclusion：SPGR T2＊ WI with TE=30ms has certain advantages for the rapid detection of cerebral hemorrhage.

关 键 词：磁共振成像 脑出血 回波时间 扰相梯度回波 

分 类 号：R445.2[医药卫生—影像医学与核医学] R743.3[医药卫生—诊断学]