The intraluminal defect or no contrast medium in distant pulmonary arteries can be seen on the DSA.Multiple pulmonary segments perfusion defects were seen on pulmonary perfusion imaging.

• 肺动脉造影图像表现为肺动脉分支出现充盈缺损或截断改变，肺灌注显像表现为多发的呈肺段分布的放射性减低或缺损。