Histogram Analysis of Photoacoustic Effect Changes on Different Liquid Samples

Proceedings of the 3rd International Conference on Medical and Health Informatics Pub Date : 2019-05-17 DOI:10.1145/3340037.3340067

Tsu-Wang Shen, Ting-Ku Ou, Chi-Chang Chang

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引用次数: 1

Abstract

The photoacoustic imaging is based on the effect of the acoustic response of laser light absorption to avoid the effects of light scattering. The photoacoustic imaging shows the outperformance to compare with traditional ultrasound imaging. However, it is unknown if the photoacoustic effect changes when the laser misalignment on the reticulated piezoelectric ceramic. Our system is mainly composed of hardware and software, including a piezoelectric ceramic, motors, a class III laser diode, relays, and a data acquisition card combined with LabView™ program. The piezoelectric sensor is a 21.9mm by 15.9mm rectangular ceramic with four strip holes in the center. The laser hits several different spots on strip holes of piezoelectric. The total of 6 points are tested to observe if these signals keep consistence. The results demonstrated the laser mis-alignment effect of photoacoustic imaging can be controlled. Finally, the research tested different samples and analyzed by histogram method to obtain the response signals with different features. This research may help to generate photoacoustic features faster and to improve image quality in the future.

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不同液体样品光声效应变化的直方图分析

光声成像是利用激光光吸收的声响应效应来避免光散射的影响。与传统的超声成像相比，光声成像具有明显的优越性。然而，当激光对准网状压电陶瓷时，光声效应是否会发生变化尚不清楚。我们的系统主要由硬件和软件组成，包括压电陶瓷、电机、III类激光二极管、继电器和结合LabView™程序的数据采集卡。压电传感器是一个21.9毫米乘15.9毫米的矩形陶瓷，中心有四个带孔。激光照射在压电条形孔上的几个不同的点。一共测试了6个点，观察这些信号是否保持一致。结果表明，光声成像中的激光失准效应是可以控制的。最后，对不同的样本进行测试，采用直方图法进行分析，得到具有不同特征的响应信号。这项研究可能有助于更快地产生光声特征，并在未来提高图像质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the 3rd International Conference on Medical and Health Informatics

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