Photoacoustic tomography imaging based on a 4f acoustic lens imaging system
Photoacoustic tomography imaging based on a 4f acoustic lens imaging system
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DOI：
10.1364/oe.15.004966
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发表时间：
2007-04-16
期刊：
影响因子：
3.8
通讯作者：
Wan, Wei
中科院分区：
文献类型：
--
作者：
Chen, Zhanxu;Tang, Zhilie;Wan, Wei
研究了利用4f声透镜成像系统进行光声层析成像的理论，理论结果表明，4f声透镜具有成像能力，并保证了图像的轴向和横向单位放大倍率。提出了一种结合时间分辨技术的4f声透镜成像系统。4f声透镜能够在成像平面上成像初始光声（PA）压力分布，这与吸收分布完全相似。结合时间分辨技术，采用线性传感器阵列获取PA压力分布，重建PAT图像。实验结果表明，该系统能够获得PAT图像，且图像与背景对比度明显。(c) 2007年美国光学学会。
The theory of photoacoustic tomography ( PAT) imaging using a 4f acoustic lens imaging system has been investigated, and the theoretical results show that a 4f acoustic lens has the ability of imaging and guarantees axial and lateral unit magnification of image. A system, a 4f acoustic lens imaging system combining with time-resolved technique, is developed to acquire PAT images. The 4f acoustic lens is able to image initial photoacoustic (PA) pressure distribution, which exactly resembles the absorption distribution, onto an imaging plane. Combining with time-resolved technique, the linear transducer array is adopted to acquire the PA pressure distribution to reconstruct the PAT images. Experimental results demonstrate that the system is able to obtain PAT images and the images contrast sharply with their backgrounds. (c) 2007 Optical Society of America.