Multi-slice spiral CT diagnosis of arterial sequestration
10.3760/cma.j.issn.1005-1201.2010.04.013
- VernacularTitle:动脉性肺隔离症的多层螺旋CT诊断
- Author:
Hong YU
;
Huimin LI
;
Shiyuan LIU
;
Xiangsheng XIAO
- Publication Type:Journal Article
- Keywords:
Pulmonary circulation;
Cardiovascular abnormalities;
Tomography,X-ray computed
- From:
Chinese Journal of Radiology
2010;44(4):383-386
- CountryChina
- Language:Chinese
-
Abstract:
Objective The purpose of this study was to present the characteristic features on MSCT angiography of arterial sequestration.Methods The MSCT images of 5 patients with arterial sequestration were retrospectively reviewed All patients underwent MSCT contrast-enhanced angiography.3D rendering was made to evaluate the lung parenchyma,bronchial system,and vascular anatomy.Results All S cases demonstrated the anomalous systemic artery(ASA)as an isolated and tortuous artery arising from the descending thoracic aorta,taking a sigmoid course and running along with airway,entering the basal segments of the left lower lobe.The inferior pulmonary vein(IPV)was significantly engorged.The typical AS was diagnosed in 4 patients.Its ASA intercrossed with the IPV and two branches entering segments 7 and 8 over the IPV,and two branches entering segments 9 and 10 under the IPV.The volume of involved lung shrunk with the artery markedly engorged.A characteristic avascular section was found between the pulmonary artery supplying area and the ASA supplying area,and the bronchi did not accompany the arteries.One was diagnosed atypical AS because of coexistence with bronchial atresia.Conclusion The arterial sequestration had characteristic MSCT findings.The typical type can be definitely diagnosed,but the atypical type needs further three-dimensional analysis.
