A novel photoacoustic tomography based on a time-resolved technique and an acoustic lens imaging system
A novel photoacoustic tomography based on a time-resolved technique and an acoustic lens imaging system
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DOI：
10.1088/0031-9155/51/10/019
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发表时间：
2006-05-21
影响因子：
3.5
通讯作者：
Li, Jianghua
中科院分区：
文献类型：
--
作者：
He, Yongheng;Tang, Zhilie;Li, Jianghua
本文提出了一种基于时间分辨技术和声透镜成像系统的光声（PA）层析成像新方法。YAG激光器工作在532 nm，脉冲宽度为7 ns，光脉冲为10 mJ，作为激发源照射组织。从组织产生的PA信号被成像到具有声透镜的多元件线性阵列换能器上。64电子开关被有效地用于将并行PA信号改变为串联PA信号。所提出的方法直接提供PA图像没有任何复杂的重建算法。利用时间分辨技术，可以成功地实现层析成像。结果表明，图像与原始样本吻合良好。
A novel photoacoustic (PA) tornographic method, which is based on a time-resolved technique and an acoustic lens imaging system, is presented in this paper. A YAG laser operating at 532 nm with a 7 ns pulse width and 10 mJ optical pulse is employed as the excitation source to irradiate the tissue. PA signals generated from the tissue are imaged onto a multi-element linear array transducer with an acoustic lens. A 64 electronic switch is efficiently used for changing the parallel PA signals into a series. The proposed method directly provides PA images without any complex reconstruction algorithms. With the time-resolved technique, tomographic imaging can be achieved successfully. The results show that the images agree well with the original samples.