实时超声弹性成像原理与方法  

Real-time Ultrasound Elastography:Principles and Methods

作　　者：孙瑞超[1] 唐亚男[1] 李灵[1] 陆敏华[1,2,3] 汪天富[1,2,3] 陈思平[1,2,3] 

机构地区：[1]深圳大学医学院生物医学工程系,深圳518060 [2]广东省生物医学信息检测与超声成像重点实验室,深圳518060 [3]医学超声关键技术国家地方联合工程实验室,深圳518060

出　　处：《中国医疗器械信息》2013年第6期1-9,共9页China Medical Device Information

摘　　要：超声弹性成像是近二十年研究非常热的一种新型的超声成像技术。其中,准静态超声弹性成像是目前比较流行,并且较早投入临床应用的弹性成像技术,可以实时的对组织的不同硬度属性以不同的灰度或者伪彩色图像进行表征。相对于传统的触诊而言,超声弹性成像提供了相对定量的表述,作为一种潜在的可用于诊断乳腺,前列腺等组织癌变,监测超声/射频消融等进程的新方法,具有非常广泛的临床应用前景。本文首先介绍了常用的位移估计算法,并重点介绍该方向最新的研究成果,然后介绍从位移中提取组织应变的原理和方法,同时还对模量重建的方法及其必要性进行了论述,最后讨论了评估一种新的弹性成像算法常用的验证方式。Ultrasound elasticity imaging is an emerging technology in recent decades. Among various techniques, the quasi-static ultrasound elastography is currently more popular which has been used in clinic for a few years. It characterizes the stiffness of soft tissue with different grayscale or pseudo-color image superpositioned on B-mode image. Compared with traditional palpation, ultrasound elastography provides quantitative description of tissue stiffness, which has been regarded as a useful tool for the diagnosis of the tumors of the breast, prostate and other organizations, as wel as a new method of monitoring ultrasound / RF ablation process. This paper frst describes the displacement estimation algorithm, and focuses on the state of the art techniques. Then we introduce the principles and methods of strain extraction methods, together with the modulus reconstruction method and its necessity. Final y, we present a new evaluation method for elastography algorithm development.

关 键 词：超声弹性成像 成像原理 超声成像技术 组织应变 临床应用 彩色图像 射频消融 前列腺 

分 类 号：R445.1[医药卫生—影像医学与核医学]