CAJ | 학술논문

目的利用三维计算机血流动力学数值模拟技术分析不同形态侧壁动脉瘤的血流特点.方法选取资料完整的侧壁动脉瘤患者14例,在三维计算机断层扫描血管造影(CTA)图像基础上,利用本课题组自写程序及美国Fluent公司的Fluent 6.02等,对动脉瘤进行三维计算机血流动力学数值模拟,得出动脉瘤血流速度、轨迹、剪切力等多项参数,结合动脉瘤形态特点进行对比分析.结果　根据分析结果　将患者侧壁动脉瘤分为两种类型.Ⅰ型:动脉瘤长径与载瘤动脉中心轴不共面,模拟结果　显示动脉瘤中有涡流产生,血流速度范围0.86～1.03 m/s.Ⅱ型:动脉瘤长径与载瘤动脉中心轴共面,模拟结果　显示动脉瘤中无明显涡流产生,血流速度范围0～0.013 m/s.结论　从Ⅰ、Ⅱ型动脉瘤特点可知,侧壁动脉瘤的形态特点决定瘤内血流特点.
목적 이용삼유계산궤혈류동역학수치모의기술분석불동형태측벽동맥류적혈류특점.방법 선취자료완정적측벽동맥류환자14례,재삼유계산궤단층소묘혈관조영(CTA)도상기출상,이용본과제조자사정서급미국Fluent공사적Fluent 6.02등,대동맥류진행삼유계산궤혈류동역학수치모의,득출동맥류혈류속도、궤적、전절력등다항삼수,결합동맥류형태특점진행대비분석.결과　근거분석결과　장환자측벽동맥류분위량충류형.Ⅰ형:동맥류장경여재류동맥중심축불공면,모의결과　현시동맥류중유와유산생,혈류속도범위0.86～1.03 m/s.Ⅱ형:동맥류장경여재류동맥중심축공면,모의결과　현시동맥류중무명현와유산생,혈류속도범위0～0.013 m/s.결론　종Ⅰ、Ⅱ형동맥류특점가지,측벽동맥류적형태특점결정류내혈류특점.
Objective By 3D-computational numerical simulation, to analyze the hemodynamic characters of different lateral aneurysms. Methods In 14 cases of lateral aneurysm with complete clinical data, on the basis of 3D-CTA image, self-designed program and Fluent 6. 02 softwares were used to simulate blood flow in the aneurysm. The blood velocity, fluid track, wall shearing stress, etc. were obtained.Results The patients were claffied into two types: Type Ⅰ , the longest diameter of the aneurysm and the central axis of the mother artery were not in the same plane, there was turbulent flow, and the blood velocity was 0. 86-1.03 m/s; Type Ⅱ: the longest diameter of the aneurysm and the central axis of the mother artery were in the same plane, there was no typical turbulent flow, and the blood velocity was 0-0. 013 m/s.Conclusion From the characters of types Ⅰ and Ⅱ aneurysm, It is speculated that the hemodynamics is related to the morphology of lateral aneurism.