學術活動預告:電智學術論壇之通信學科(12月1日)
【時間】2022年12月1日(周四)下午15:00開始
【地點】線下講座,9B406會議室
【主題】關于顱腦的微波熱緻超聲成像系統激勵方法研究
【主講人介紹】
嚴安,通信工程系專任教師,畢業于四川大學電子與信息工程學院,獲理學博士學位,曾到美國加州理工學院聯合培養一年。主要研究方向包括微波整流電路設計、微波熱緻超聲成像系統設計。獲得過亞洲無線輸能協會(AWPT)最佳會議論文獎,在Applied Physics Letter等期刊發表過多篇學術論文,其中以第一作者發表期刊和會議論文11篇。
【内容簡介】
腦瘤具有非常高的緻死率,早期的準确檢測有利于提高存活率。在微波發射器方面,對新型的準圓錐螺旋天線可以實現寬波束低軸比的均勻輻射進行研究,從而消除了由于微波非均勻輻射産生的“分瓣”現象。在成像掃描算法方面,對基于線性插值的多扇區掃描算法獲取高頻熱緻超聲分量進行研究,彌補了點聚焦探頭張角狹窄的缺陷,結合新的大功率微波源,模拟顱腦樣品在頭骨内的高分辨率成像,證實了微波熱緻超聲技術在成人顱腦成像中的巨大潛力。在系統方面,對一種可實現三維的微波熱緻超聲成像系統進行研究,對微波熱緻超聲技術在顱腦成像的應用有着非常積極的意義。
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.
誠摯歡迎廣大師生參加。