The diagnostic value of MSCT for pulmonary sequestration

CHEN Xiaojun; LUO Qiong; CHEN Chunmei

Abstract：Objective To explore the application value of multi-slice spiral CT angiography in the diagnosis of pulmonary se-questration. Methods We collected 9 cases of pulmonary sequestration confirmed by surgery and pathology and retrospectively analyzed. All were examined by 64 slice spiral GE scanner,CT. First CT plain scan,and then double phase enhanced scan,the image will be transferred to the workstation,MPR,MIP,SSD and VR reconstruction. Results 9 cases of pulmonary sequestra-tion were located in the posterior basal segment of lower lobe,Of which 7 cases were located in the left lower lung,2 cases were located in the right lower lung. Abnormal blood supply artery in 8 cases was from thoracic aorta,1 case was from celiac trunk. CT scan was mainly manifested as pulmonary cyst,nodule or mass. Enhancement of blood vessel shadow in the lesion area was en-hanced,and a strip or nodular enhancement can also be seen. CT angiography showed that the lesion was supplied by the abnor-mal body artery. MPR and MIP can be used to show the overall shape of the feeding artery and the lesion of the lung parenchyma. SSD and VR can show the origin and stroke of the feeding artery and the venous drainage. Conclusion Enhanced multislice spi-ral CT and 3D reconstruction can clearly display the pulmonary lesions and abnormal blood supply and drainage vessels,which is the diagnosis of pulmonary sequestration the best noninvasive inspection method.