Objective:To investigate the comparison of diagnostic value between multi-slice spiral CT (MSCT) and MR pulmonary angiographies in the diagnosis of acute pulmonary embolism.Methods: 86 patients with acute pulmonary embolism who underwent imaging examination were randomly divided into control group (43 cases) and observation group (43 cases) according to random number table method. The patients in the control group were analyzed with MSCT for enhanced scan under pulmonary angiography. The patients in the observation group were analyzed with MR for pulmonary artery imaging and pulmonary embolism. These results were compared depended on above data.Results: The differences of sensitivity and Youden index between control group and observation group were statistically significant (x2=10.052,x2=10.052,P<0.05), and the sensitivity of observation group was higher than that of control group, and both the diagnostic specificity of the two groups were 100%. For embolism of different part, the accuracy of observation group was higher than that of control group. And for the comparison of left multiple between the two groups, the difference were significant (x2=4.168,P<0.05). While for the comparisons of single, bilateral and multiple for right side, the differences between the two groups were no significant (x2=2.355, x2=0.917,x2=2.912,P>0.05). For the diagnosis of various indirect symptom, the accuracy of observation group was higher than control group. For the comparison of diagnostic accuracy of pulmonary segments infarct between the two groups, the difference of them was significant (x2=5.630,P<0.05). While the comparisons of pericardial effusion, pleural effusion and pulmonary artery hypertension, the differences of them between the two groups were no significant (x2=3.214,x2=3.733,x2=3.281;P>0.05).Conclusion: For patients with acute pulmonary embolism, the diagnosis by using MR imaging technology has series advantages, such as convenient operation and higher diagnostic accuracy, and it can accurately determine the severe degree of the disease.%目的:对比研究多层螺旋CT(MSCT)与肺动脉MRI技术在急性肺动脉栓塞的诊断价值.方法:选择在医院进行影像学检查的86例急性肺动脉栓塞患者,按照随机数表法,将其分为对照组和观察组,每组43例.对照组患者使用MSCT肺动脉造影下的增强扫描进行病情的分析;观察组患者使用MR进行肺动脉的成像和肺动脉栓塞的病情分析,将诊断的效果进行比较.结果:对照组与观察组诊断的灵敏度和约登指数比较,差异有统计学意义(x2=10.052,x2=10.052;P<0.05),观察组的灵敏度高于对照组,诊断特异度两组均为100%;不同部位的栓塞诊断观察组的准确率高于对照组,两组左侧多发的准确率比较,差异有统计学意义(x2=4.168,P<0.05);而右侧多发、单发和双侧多发的比较,差异无统计学意义(x2=2.355,x2=0.917,x2=2.912;P>0.05);对不同间接征象的诊断,观察组的诊断准确率高于对照组,两组肺段梗死的诊断准确率比较,差异有统计学意义(x2=5.630,P<0.05);而两组心包积液、胸腔积液和肺动脉高压比较,差异无统计学意义(x2=3.214,x2=3.733,x2=3.281;P>0.05).结论:对于急性肺动脉栓塞的患者,应用MR成像技术进行诊断,操作方便快捷,诊断准确率高,对病情的严重程度判定准确.
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