Abstract: Objective:To explore the clinical value of preoperative chest plain scan threedimensional reconstruction technique and enhanced CT threedimensional reconstruction technique in anatomical resection of pulmonary segments.Methods:The clinical data of 40 patients who underwent thoracoscopic anatomical segmentectomy from March 2019 to January 2021 were retrospectively analyzed.Among them,22 patients underwent preoperative plain CT,and 18 patients underwent preoperative enhanced CT.All the patients underwent preoperative threedimensional computed tomography bronchography and angiography(3DCTBA) using the Mimics software to show the anatomy of pulmonary segments,and the safe cutting edge of 2 cm from the pulmonary nodule was constructed.This study was divided into two groups:plain scan reconstruction group and enhanced reconstruction group.The general clinical characteristics,operation complexity,operation time and postoperative recovery of the two groups were compared.Results:There were no significant differences in operation complexity,operation time,intraoperative blood loss,postoperative total drainage volume,postoperative drainage tube indwelling time,postoperative hospital stay and postoperative pathological types(P＞0.05).Conclusion:Preoperative application of 3DCTBA with chest plain CT or enhanced CT can be used to guide anatomic segmentectomy to achieve accurate segmentectomy,which is safe and effective.

Key words: chest CT, lung segmentectomy, threedimensional reconstruction technology