基于双向流固耦合分析载瘤对颈动脉血管发展及影响  

Analysis of Development and Influence of Parent Tumor on Carotid Artery Based on Two-Way Fluid-Structure Coupling Method

作　　者：冉鹏[1] 张焜林 李闽氚 RAN Peng;ZHANG Kunlin;LI Minchuan(School of Bioinformatics,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学生物信息学院,重庆400065

出　　处：《医用生物力学》2024年第4期699-705,共7页Journal of Medical Biomechanics

基　　金：重庆市自然科学基金项目(CSTB2022NSCQ-MSX0006,CSTC2021JCYJ-MSXMX0864)。

摘　　要：目的研究带有囊形瘤体的颈动脉血管在血液周期性流动过程中的力学特性和瘤体变化,探究囊形瘤体发展的具体机制以及瘤体对血液流动的影响。方法采用双向流固耦合方法对颈动脉血管内囊形瘤体和血液之间的相互作用进行有限元数值仿真研究。分析血管的形变、关键区域的血液速度和力学特性以及瘤体对血管的影响过程。结果在瘤体与血管的交界线上,瘤体呈现较大的形变,瘤体壁面压力低。瘤体对侧血管壁和血管分叉周围的三角区域壁面压力高,易于发生拉伸或破裂。瘤体内部血液速度明显低于正常血管,形成的漩涡使瘤体内部空间未能被充分利用。瘤体在脉动周期内所受的壁面剪切力一直较小,容易导致杂质沉积形成粥样硬化斑块。结论囊形瘤体会干扰血管内血液正常流动;囊形瘤体会促进镜像瘤体产生。研究结果为囊形瘤体的治疗和预防提供理论参考。通过了解囊形瘤体的力学特性和对血管的影响,医生可以更好地制定个性化的治疗方案,提高治疗效果。Objective To study the mechanical properties and changes in the carotid vessels of cystic tumors during periodic blood flow to explore the specific mechanism of the development of cystic tumors and the effects of tumors on blood flow.Methods Finite element numerical simulation of the interaction between cystic tumors and blood in the carotid artery was conducted using a two-way fluid-structure coupling method.The deformation of blood vessels,blood velocity,mechanical properties in key areas,and influence of the tumor on blood vessels were analyzed.Results At the boundary between the tumor and blood vessels,the tumor showed a large deformation and low pressure on the tumor wall.The pressure on the opposite vascular wall and triangular area around the vascular bifurcation of the tumor was high,and it could easily stretch or rupture.The blood velocity inside the tumor was lower than that in normal blood vessels,indicating that the internal space of the tumor was not fully utilized.The wall shear force on the tumor during the pulsation period was always small,which lead to the deposition of impurities that form atherosclerotic plaque.Conclusions Cystic tumors interfered with normal blood flow in the blood vessels and promoted the production of mirror tumors.This study provides a theoretical reference for the treatment and prevention of cystic tumors.By understanding the mechanical properties of cystic tumors and their effects on blood vessels,doctors can develop personalized treatment plans and improve treatment outcomes.

关 键 词：囊形瘤体 双向流固耦合 血液流动 载瘤颈动脉 

分 类 号：R318.01[医药卫生—生物医学工程]