CAJ | 학술논문

非线性参量B/A是超声波在介质传播过程中非线性效应大小的度量，利用B/A实现超声新参量成像具有良好的应用前景。目前的超声医学诊断大多是依赖于RF回波信号，因此RF回波信号下的扩展比较法(ECM)为B/A成像的临床应用提供了可能。本文研究RF回波信号下的B/A成像，利用自适应时间增益补偿技术补偿声波在组织中的衰减，简化拓展比较法(ECM)，仿真与仿体实验表明该方法成像结果较好且操作简单。
비선성삼량B/A시초성파재개질전파과정중비선성효응대소적도량，이용B/A실현초성신삼량성상구유량호적응용전경。목전적초성의학진단대다시의뢰우RF회파신호，인차RF회파신호하적확전비교법(ECM)위B/A성상적림상응용제공료가능。본문연구RF회파신호하적B/A성상，이용자괄응시간증익보상기술보상성파재조직중적쇠감，간화탁전비교법(ECM)，방진여방체실험표명해방법성상결과교호차조작간단。
The nonlinear parameter B/A is a measure of the nonlinear acoustic effects when ultrasound propagating through tissues. The new ultrasound B/A parameter imaging has a promising prospect. Present ultrasound medical diagnosis mostly relies on the radio frequency (RF) echo signal, so the extended comparative method (ECM) for echo mode makes the clinical application of B/A imaging possible. This paper investigates B/A parameter imaging in RF echo mode. The attenuation of ultrasound caused by propagating through tissues is compensated with the adaptive time gain compensation. After such compensation, the ECM is simplified. Both the simulation and phantom experiment show that the simplified ECM can provide accurate B/A imaging and is easy to be implemented.