學(xué)術(shù)活動(dòng)預(yù)告：電智學(xué)術(shù)論壇之通信學(xué)科（12月1日）

【時(shí)間】2022年12月1日（周四）下午15:00開始

【地點(diǎn)】線下講座，9B406會(huì)議室

【主題】關(guān)于顱腦的微波熱致超聲成像系統(tǒng)激勵(lì)方法研究

【主講人介紹】

嚴(yán)安，通信工程系專任教師，畢業(yè)于四川大學(xué)電子與信息工程學(xué)院，獲理學(xué)博士學(xué)位，曾到美國(guó)加州理工學(xué)院聯(lián)合培養(yǎng)一年。主要研究方向包括微波整流電路設(shè)計(jì)、微波熱致超聲成像系統(tǒng)設(shè)計(jì)。獲得過亞洲無(wú)線輸能協(xié)會(huì)（AWPT）最佳會(huì)議論文獎(jiǎng)，在Applied Physics Letter等期刊發(fā)表過多篇學(xué)術(shù)論文，其中以第一作者發(fā)表期刊和會(huì)議論文11篇。

【內(nèi)容簡(jiǎn)介】

腦瘤具有非常高的致死率，早期的準(zhǔn)確檢測(cè)有利于提高存活率。在微波發(fā)射器方面，對(duì)新型的準(zhǔn)圓錐螺旋天線可以實(shí)現(xiàn)寬波束低軸比的均勻輻射進(jìn)行研究，從而消除了由于微波非均勻輻射產(chǎn)生的“分瓣”現(xiàn)象。在成像掃描算法方面，對(duì)基于線性插值的多扇區(qū)掃描算法獲取高頻熱致超聲分量進(jìn)行研究，彌補(bǔ)了點(diǎn)聚焦探頭張角狹窄的缺陷，結(jié)合新的大功率微波源，模擬顱腦樣品在頭骨內(nèi)的高分辨率成像，證實(shí)了微波熱致超聲技術(shù)在成人顱腦成像中的巨大潛力。在系統(tǒng)方面，對(duì)一種可實(shí)現(xiàn)三維的微波熱致超聲成像系統(tǒng)進(jìn)行研究，對(duì)微波熱致超聲技術(shù)在顱腦成像的應(yīng)用有著非常積極的意義。

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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