This study was to explore the application and effect of three-dimensional (3D) images of the esophagus in the treatment of atrial septal defect (ASD) combined with tricuspid regurgitation (TR) surgery under the processing of marching cubes (MC) image reconstruction algorithm. The MC image reconstruction algorithm was improved as the optimized MC image reconstruction algorithm. 100 patients who had successfully undergone the ASD combined with TR surgery in the hospital from January 2017 to December 2019 were selected as the research objects and grouped based on size of the defect. The preoperative and postoperative conditions of the patients were analyzed with the MC image reconstruction algorithm. Compared with the traditional MC image algorithm, the optimized MC was advanced with less running time and fewer fixed points (). There were significant differences in TR of all ASD patients after the surgery (), and the TR of all patients showed obvious declines from the 1^st day to 30^th day after surgery and gradually stabilized from the 3^rd month to the 6^th month after surgery. Compared with patients with normal pulmonary artery pressure, the amount of TR in patients with elevated pulmonary artery pressure increased significantly, and the difference was statistically significant (). In addition, the improvement of TR after occlusion was correlated with the preoperative ASD of the patient. The optimized MC algorithm had been improved greatly in the number of fixed points and running time. The analysis using the optimized MC algorithm showed that ASD patients generally suffered different degrees of TR, TR increased with the increase of the defect, and good effect could be achieved in surgery of all kinds of ASD patients.

中文翻译：

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基于MC图像重建算法的经食管3D超声心动图评价房间隔缺损合并三尖瓣反流的手术效果

本研究旨在探讨食管三维（3D）图像在行进立方（MC）图像重建算法处理下治疗房间隔缺损（ASD）联合三尖瓣反流（TR）手术中的应用及效果。 . MC图像重建算法改进为优化后的MC图像重建算法。选取2017年1月至2019年12月在我院成功接受ASD联合TR手术的100例患者作为研究对象，并根据缺损大小进行分组。采用MC图像重建算法分析患者术前术后情况。与传统的 MC 图像算法相比，优化后的 MC 算法更先进，运行时间更短，固定点更少（）。所有 ASD 患者术后 TR 均存在显着差异（），所有患者的TR显示从1明显下降^ST天至30^日日间手术后从3逐渐稳定^RD月至6^个月的手术后。与肺动脉压正常患者相比，肺动脉压升高患者TR量明显增加，差异有统计学意义（）。此外，闭塞后TR的改善与患者术前ASD相关。优化后的 MC 算法在定点数和运行时间上都有较大的提升。使用优化的MC算法分析表明，ASD患者普遍存在不同程度的TR，TR随着缺损的增加而增加，在各类ASD患者的手术中均能取得良好的效果。