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Objective To investigate and summarize the effectiveness and safety of CT guided microcoil localization before video-assisted thoracic surgery (VATS) for the removal of ground glass opacity (GGO).Method 147 patients with GGO who were treated in our hospital from January 2019 to February 2021 were retrospectively analyzed. They were divided into two groups according to the final position of the end of the microcoil, intracavity group (n=78) and extracavity group (n=69). Comparison of the two groups of patients with puncture complications, and the influence of the end position of the coil for VATS.Results The proportion of supine and prone position in the intracavity group was significantly higher than that in the extracavity group (82.1% vs. 66.7%, P0.05). The time of VATS and the rate of conversion to thoracotomy in the intracavity group were significantly lower than those in the extracavity group (103.4±21.0min vs. 112.2±17.3min, 0% vs. 5.8%, PConclusion CT-guided placement of the microcoil was a very practical, simple and convenient localization method before VATS with high success rate and few complications, further more, it was a better method to place the end of the coil in the pleural cavity because of the lower complication rate, shorter VATS time and lower rate of thoracotomy conversion.

Today, artificial intelligence and virtual reality are rapidly developing as a new technology, and major universities and training institutions have opened relevant courses one after another. However, the traditional course management system cannot meet the needs of virtual reality technology. Therefore, the virtual reality course management system based on artificial intelligence has become an important technological breakthrough to solve this problem. The purpose of this article is to study the design of a virtual reality course management system based on artificial intelligence. This article first, on the basis of fully understanding the core concepts of virtual reality, transforms the curriculum management needs into actual functions for design, and designs the three key functional modules of the design and research of the virtual reality curriculum management system based on artificial intelligence in detail. At the same time, the software architecture and database of the system are rationally designed, the system is designed and explained, and the key points in the main functional modules are explained in more detail. Finally, combined with the artificially designed virtual reality curriculum management system based on artificial intelligence, the application technology, education application and application experience analysis are carried out through questionnaire survey. The results of the questionnaire show that 47% of students are “very willing” to join the immersive virtual reality classroom teaching, and 40% of students choose “more willing”, indicating that students are more willing to accept the management system model.

Objective To study changes in T lymphocyte subsets, cytokines, and liver enzymes in patients with malignant obstructive jaundice (MOJ) before and after external biliary drainage (percutaneous transhepatic cholangiography drainage, PTCD) and internal biliary drainage (percutaneous transhepatic insertion of biliary stents, PTIBS). Methods MOJ patients undergoing PTCD (n = 44) and PTIBS (n = 38) at our hospital were enrolled in the study from January 2017 until December 2019. Peripheral blood total bilirubin (TBIL), direct bilirubin (DBIL), aspartate aminotransferase (AST), alanine aminotransferase (ALT), CD3+%, CD4+%, CD4+/CD8+ ratio, interleukin (IL)-2, IL-6, and tumor necrosis factor (TNF)-α were measured before and 1 week after biliary drainage. Results There was no significant difference in any parameter between the two groups before biliary drainage. TBIL, DBIL, AST and ALT following PTCD were significantly lower than before PTCD. By contrast, CD3+%, CD4+%, CD4+/CD8+ ratio, IL-2, IL-6 and TNF-α showed no significant difference before and 1 week after PTCD. TBIL, DBIL, AST, ALT, IL-6 and TNF-α were significantly lower following PTIBS than before PTIBS. CD3+%, CD4+%, CD4+/CD8+ ratio and IL-2 were significantly higher following PTIBS than before PTIBS. Conclusion Both PTCD and PTIBS were effective for treatment of MOJ, but PTIBS was more beneficial for recovery of immune function.

With the development of economy and society, virtual reality technology has been paid more and more attention and gradually applied to all walks of life. Due to its interactive, immersive and real-time nature, virtual reality has a broad prospect in the field of architecture, especially in interior decoration and design. The use of virtual reality interior design allows designers and users to experience effect of what they see is what they get, but also allows users to feel as if they are in the design of the virtual scene, immersive mood. The purpose of this paper is to study the development status and trend of indoor VR technology design under the background of big data. After reviewing the development background of virtual reality technology and its application status in interior design, this paper introduces the technology related to big data, studies the global lighting rendering technology, and then analyzes the interior design system based on big data and VR technology. The experimental results show that the interior design system designed in this paper is accurate. By comparing the detection results of the digital model with the real results, the error of the digital model is not more than 0.5.