超声多普勒检测动脉内出血的多维度复合模型研究  

A multi-dimensional model for describing internal bleeding detection in artery by Doppler ultrasound

作　　者：杨迪[1] 章东[1] 郭霞[1] 龚秀芬[1] 费兴波 

机构地区：[1]南京大学声学研究所近代声学教育部重点实验室,南京210093 [2]北京源德生物工程公司,北京100176

出　　处：《声学学报》2009年第1期24-29,共6页Acta Acustica

基　　金：教育部新世纪优秀人才计划(06-0450);国家自然科学基金(10774071);江苏省自然科学基金(BK2007518)资助项目。

摘　　要：建立检测内出血点的量化技术有助于进一步提高超声止血的效率。提出了描述动脉血管内出血的多维度复合模型。由一个描述破裂血管的二维模型和一个描述下游血管系统响应的一维模型组成。计算机仿真及初步的活体实验结果证明了理论模型的有效性,并表明内出血时的血流速度波形会产生大幅度单波峰或收缩速度峰的相位延迟,该结果可作为自动快速检测血管破裂的量化参数。Developing quantitative technique to detect internal bleeding is a key to improve efficiency of ultrasound hemostasis. A multi-dimensional approach was developed to describe the internal bleeding of the injured artery. It was consisted of a two-dimensional （2D） model describing the injured vessel and a one-dimensional model （1D） mimicking the downstream of vessel system. The validity of this approach was confirmed by both the numerical simulation and in vivo measurement. Results demonstrated that there were a significant increase in magnitude and a phase-lag for the peak systolic velocity at the injury site which might be useful for quantitative internal bleeding detection and localization.

关 键 词：超声多普勒 动脉血管 复合模型 快速检测 内出血 维度 血流速度 计算机仿真 

分 类 号：R543[医药卫生—心血管疾病]