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目的探讨颅脑磁共振弥散加权成像(DWI)与颅脑平扫在脑梗塞诊断中的价值。方法随机抽取本院2009年5月-2012年8月进行颅脑平扫及弥散加权成像(DWI)的就诊患者,分别统计颅脑平扫阴、阳性及弥散加权成像阴、阳性比率,采用SPSS13.0软件比较分析两种方法在脑梗塞诊断中的应用价值。结果共有1 122例患者图像进行了统计分析,弥散成像阳性率在男性(76.08%)与女性(71.32%)之间差异无统计学意义(P=0.071);弥散成像阳性患者平均年龄(64.33岁)大于阴性患者(62.08岁)(P=0.007);颅脑平扫阴性120例(10.7%)、平扫阳性1 001例(89.3%);弥散成像阴性患者共292例(26.1%),弥散阳性829例(73.9%);在平扫阳性结果中,有平扫、弥散均为阴性患者120例,平扫阳性、弥散阴性患者172例(58.9%),平扫、弥散均为阳性患者829例;颅脑平扫阳性与阴性患者中的弥散成像检查阳性率差异有统计学意义(χ2=381.526,P=0.000)。结论弥散加权成像能很好地显示颅脑梗塞灶并能判定病灶新旧程度,颅脑平扫也能很好地显示颅脑梗塞病灶,平扫阴性时提示患脑梗塞的可能性不大。在进行颅脑弥散加权成像之前进行颅脑平扫是必要的和有应用价值的。
Objective To investigate the value of brain magnetic resonance diffusion-weighted imaging (DWI) and craniocerebral scan in the diagnosis of cerebral infarction. Methods Patients in our hospital from May 2009 to August 2012 were enrolled in this study. The positive and negative rates of craniocereoretinal, masculine and diffusive weighted imaging were calculated respectively by SPSS13 .0 software comparative analysis of two methods in the diagnosis of cerebral infarction value. Results A total of 1 122 patients were analyzed statistically. The positive rate of diffusion imaging was not statistically significant between male (76.08%) and female (71.32%) (P = 0.071). The average age of diffuse imaging positive patients (64.33 years ) Were significantly higher than those in the negative group (62.08 years) (P = 0.007); 120 cases (10.7%) had negative craniocerebral scan and 100 cases (89.3%) had positive plain scan; 292 cases Positive in 829 cases (73.9%). Among the positive results of plain scan, there were 120 cases of plain and diffuse negative results, of which there were 172 cases (58.9%) with positive flat scan and diffuse negative. For example, there was significant difference in the positive rate of diffusion imaging examination between positive and negative patients (χ2 = 381.526, P = 0.000). Conclusion DWI can display cerebral infarction and determine the degree of new and old lesions, craniocerebral scan can also show the cerebral infarction, plain negative when prompted the possibility of suffering from cerebral infarction is not. It is necessary and useful to perform craniocerebral scan before performing DWI.