RESUMEN
Objective To assess the value of MSCT and postprocessing techniques in displaying abnormal blood vessels of pulmonary sequestration. Methods Ten patients with pulmonary sequestration proved with operation and pathology underwent both plain and enhanced chest CT scan. The reconstructed images of maximum intensity projection, multiplanar reconstruction and volume rendering were analyzed retrospectively. Results Of 10 patients, intra-lobe type sequestration was seen in 9 patients and extra-lobar type in 1 patient. The lesions located in the left lower lobe in 8 patients and in the right lower lobe in 2 patients. Angiography postprocessing technique displayed abnormal supplying vessels in 9 patients (7 from descending aorta and 2 from abdominal aorta) and displayed the origin, courser, branches and distribution of lesions clearly. Vessels in 9 patients drained into inferior pulmonary veins except in one drained into azygos vein. Conclusion MSCT angiography with postprocessing reconstruction techniques can display abnormalities of pulmonary sequestration clearly and has great value in the diagnosis of pulmonary sequestration, so as might be the first choice in diagnosing pulmonary sequestration.