返回列表 发布时间:2022-11-30

学术活动预告:电智学术论坛之通信学科(12月1日)

学术活动预告:电智学术论坛之通信学科121

 

【时间】2022121日(周四)下午15:00开始

【地点】线下讲座,9B406会议室

【主题】关于颅脑的微波热致超声成像系统激励方法研究

【主讲人介绍】

严安通信工程系专任教师,毕业于四川大学电子与信息工程学院,获学博士学位,曾到美国加州理工学院联合培养一年。主要研究方向包括微波整流电路设计微波热致超声成像系统设计获得过亚洲无线输能协会(AWPT)最佳会议论文奖,在Applied Physics Letter等期刊发表过多篇学术论文,其中以第一作者发表期刊和会议论文11篇。

 

内容简介

脑瘤具有非常高的致死率,早期的准确检测有利于提高存活率。在微波发射器方面,对新型的准圆锥螺旋天线可以实现宽波束低轴比的均匀辐射进行研究,从而消除了由于微波非均匀辐射产生的“分瓣”现象。在成像扫描算法方面,对基于线性插值的多扇区扫描算法获取高频热致超声分量进行研究,弥补了点聚焦探头张角狭窄的缺陷,结合新的大功率微波源,模拟颅脑样品在头骨内的高分辨率成像,证实了微波热致超声技术在成人颅脑成像中的巨大潜力。在系统方面,对一种可实现三维的微波热致超声成像系统进行研究,对微波热致超声技术在颅脑成像的应用有着非常积极的意义。

Brain tumor has a very high mortality rate, the accurate detection in early stage is conducive to improve the survival rate.contrast and high resolution. In the aspect of microwave transmitter, a new quasi-conical spiral antenna is proposed to achieve a more uniform radiation, so as to eliminate the "splitting" phenomenon caused by microwave non-uniform radiation. In the aspect of imaging algorithm, a multi-sector scanning based on linear interpolation is proposed to obtain the high-frequency thermal ultrasound components. Combined with a new high power microwave source, the high-resolution imaging of brain samples insider a skull is obtained, which confirms the great potential of the TAT of brain. In the aspect of system, this work proposes a kind of TAT imaging system which can realize three dimensional imaging, and obtains relatively clear three-dimensional image of a sample inside of the skull, which has a very positive significance for the applications of the TAT in brain imaging.

 

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