VRT was the best way to display the mainly body of the pulmonary artery embolism. The next better one were MIP,MPR and the VE in order. MIP and MPR well displayed the small pulmonary artery embolism which below the lobe of lung.

• VRT成像对显示肺动脉主干部位的栓塞最为直观,依次为MIP、MPR及VE图像,其中MIP、MPR成像对显示肺叶以下动脉小栓塞情况较好。