Yang Diwu, Zeng Lvming, Pan Changning, Zhao Xuehui, Ji Xuanrong
Department of Physics and Engineering, Hunan University of Technology, Zhuzhou 412000, China.
Opt Express. 2013 Jan 14;21(1):984-91. doi: 10.1364/OE.21.000984.
We present a fast photoacoustic imaging system based on an annular transducer array for detection of intraocular foreign bodies. An eight-channel data acquisition system is applied to capture the photoacoustic signals using multiplexing and the total time of data acquisition and transferring is within 3 s. A limited-view filtered back projection algorithm is used to reconstruct the photoacoustic images. Experimental models of intraocular metal and glass foreign bodies were constructed on ex vivo pig's eyes and clear photoacoustic images of intraocular foreign bodies were obtained. Experimental results demonstrate the photoacoustic imaging system holds the potential for in clinic detecting the intraocular foreign bodies.
我们展示了一种基于环形换能器阵列的快速光声成像系统，用于检测眼内异物。采用八通道数据采集系统，利用多路复用技术捕获光声信号，数据采集和传输的总时间在3秒以内。使用有限视角滤波反投影算法重建光声图像。在离体猪眼上构建了眼内金属和玻璃异物的实验模型，并获得了清晰的眼内异物光声图像。实验结果表明，该光声成像系统在临床检测眼内异物方面具有潜力。
