Study of distribution feature and accuracy in pulmonary embolism diagnosising by CT and MRI

Objective To evaluate the diagnosis value of Spiral CT and MRI imaging in pulmonary embolism and CT and MRI performance.Methods Clinical data of 50 patients of pulmonary embolism diagnosed by DSA in our hospital were analyzed retrospectively,all patients were given spiral CT and MRI angiography examination,the diagnosis value of two imaging methods were compared.Results Spiral CT pulmonary angiography showed pulmonary artery thrombosis in 48 patients(96.0%),the main performance was pulmonary artery filling defect,distal non-imaging,78 embolus were detected in Arterial blood vessels and its branches;MRI angiogram showed pulmonary artery thrombosis in 41 patients(82%),with the main pulmonary artery filling defect,the remote signal disappeared,and 64 embolus were detected;50 patients of pulmonary embolism were diagnosed by DSA with 80 embolus in Arterial blood vessels and its branches.In standard of DSA,the difference of diagnosis rate of pulmonary embolism between CT and MRI was statistically significant(P 0.05),the difference of embolus detection rate was statistically significant(P 0.05).Conclusion The detection accuracy rate of Spiral CT angiography of pulmonary embolism and embolus are better than MRI imaging,it can be used as the first noninvasive detection method.