激光生物学报2013，Vol.22Issue(1)：48-52,5.DOI:10.3969/j.issn.1007-7146.2013.01.007
超短脉冲微波高效激发的高分辨率热声成像
Unltrshort Pulsed Microwave Induced High-efficiency and High-resolution Thermoacoustic Imaging
摘要
Abstract
Pulsed microwave induced thermoacoustic imaging takes advantage of the depth penetration of microwave energy and the resolution of acoustic waves. The microwave source generally employed in thermoacoustic imaging has a pulse width of sub-microsecond, with the energy density of several mJ/cm2 . The excited thermoacoustic wave has a main frequency of 2 MHz, and a resolution of 500 μm can be obtained. With the development of thermoacoustic imaging toward clinical application, it is very important to effectively reduce the radiation dose and improve the imaging resolution, which is a key factor for the successful application of thermoacoustic imaging system. In this paper, we designed a ultra-short microwave induced thermoacoustic imaging system, the experimental results show that this system can improve the generation efficiency of thermoacoustic waves with two orders of magnitude, and the resolution can approximately reach up to about 100 μm.关键词
热声成像/脉冲微波/转化效率/分辨率Key words
thermoacoustic imaging/ ultrashort pulsed microwave/ high-efficiency/ high-resolution分类
生物科学引用本文复制引用
娄存广,计钟,丁文正..超短脉冲微波高效激发的高分辨率热声成像[J].激光生物学报,2013,22(1):48-52,5.基金项目
科技部国家重点基础研究973计划项目(2011CB910402,2010CB732602) （2011CB910402,2010CB732602）
教育部"长江学者与创新团队计划"创新团队项目(IRT0829) （IRT0829）
国家自然科学基金项目(81127004,11104087)资助 （81127004,11104087）
