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基于CUDA的声辐射力弹性成像算法研究
引用本文:曾 博,雷友诚,王丛知,邱维宝,冯 歌,曾成志,杨 戈,郑海荣. 基于CUDA的声辐射力弹性成像算法研究[J]. 计算机工程与应用, 2015, 51(18): 249-254
作者姓名:曾 博  雷友诚  王丛知  邱维宝  冯 歌  曾成志  杨 戈  郑海荣
作者单位:1.湖南大学 电气与信息工程学院,长沙 4100822.中国科学院 深圳先进技术研究院,广东 深圳 518055
摘    要:声辐射力弹性成像是一种新的测量组织硬度的超声成像方法。不同于其他超声组织弹性成像方法,声辐射力弹性成像能够定量测量组织的弹性模量数值,并且具有对操作者经验依赖性低的特点。然而,由于成像算法数据处理量大,运算时间长,声辐射力弹性成像还无法进行准实时的二维成像。为了获得实时的二维声辐射力弹性图像,提出并实现了一种适合于在GPU上并行计算的声辐射力弹性成像算法。通过与运行在CPU上的原始声辐射力弹性成像算法进行对比,证明在GPU上实现的算法大幅度地提高了运算速度。在自制弹性仿体上,比较了基于GPU和CPU两种算法所成的二维弹性分布图像的质量,结果证明两者的图像质量没有明显差异。

关 键 词:二维声辐射力弹性成像  统一计算架构(CUDA)  图形处理器(GPU)  并行算法  

CUDA-based acoustic radiation force imaging algorithm
ZENG Bo,LEI Youcheng,WANG Congzhi,QIU Weibao,FENG Ge,ZENG Chengzhi,YANG Ge,ZHENG Hairong. CUDA-based acoustic radiation force imaging algorithm[J]. Computer Engineering and Applications, 2015, 51(18): 249-254
Authors:ZENG Bo  LEI Youcheng  WANG Congzhi  QIU Weibao  FENG Ge  ZENG Chengzhi  YANG Ge  ZHENG Hairong
Affiliation:1.College of Electrical and Information Engineering, Hunan University, Changsha 410082, China2.Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
Abstract:Acoustic Radiation Force Imaging(ARFI) is a novel method of tissue stiffness estimation. Compared with other conventional ultrasound methods, ARFI is quantitative and less operator dependent. However, current ARFI still cannot provide quasi-real-time 2D images since its algorithm is data-intensive and time-consuming. In order to obtain real-time 2D ARFI image, a new ARFI algorithm which is suitable for parallel computation on GPU is put forward and accomplished. According to the results, a high accelerate ratio has been obtained between GPU and CPU. Comparison of the quality of stiffness mapping images obtained by both CPU and GPU is also performed on a self-made phantom, and it is found that there is no distinct difference between the images.
Keywords:2D acoustic radiation force imaging  Compute Unified Device Architecture(CUDA)  Graphic Processing Unit(GPU)  parallel computation algorithm  
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