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A novel photoacoustic tomography based on a time-resolved technique and an acoustic lens imaging system

机译：基于时间分辨技术的新型光声层析成像和声透镜成像系统

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摘要

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.
机译：本文提出了一种基于时间分辨技术和声透镜成像系统的新型光声层析成像方法。使用在532 nm下工作，脉冲宽度为7 ns，光脉冲为10 mJ的YAG激光作为激发源来照射组织。从组织产生的PA信号成像到带有声透镜的多元素线性阵列换能器上。有效地使用64电子开关将并行PA信号更改为一个串联。所提出的方法直接提供PA图像，而无需任何复杂的重建算法。使用时间分辨技术，可以成功实现断层成像。结果表明，图像与原始样品吻合良好。

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