基于光声信号强度测量的非接触式异物成像技术的开发。
Development of non-contact foreign body imaging base on photoacoustic signal intensity measurement.
机构信息
Department of Physics, Universitas Kristen Satya Wacana, Salatiga, Indonesia.
Department of Applied Physics, Tunghai University, Taichung, Taiwan R.O.C.
出版信息
J Appl Clin Med Phys. 2024 May;25(5):e14230. doi: 10.1002/acm2.14230. Epub 2023 Nov 28.
BACKGROUND
It is challenging to visually identify tiny and concealed foreign objects within the body due to their small size and subcutaneous location while they can cause infections.
METHODS
A non-contact photoacoustic system based on Rosencwaig-Gersho photoacoustic theory and dual modulator method is developed for detecting foreign objects in meat.
RESULT
The experiments conducted validate the successful development of this measurement technique with 10 μm spatial resolution and its corresponding mathematical model, demonstrating an 11% Mean Absolute Percentage Error (MAPE) in comparison to the experimental results. Dual modulator successfully regulates laser energy at MPE limit.
CONCLUSION
The utilization of non-contact photoacoustic signal intensity measurements enables the identification of foreign objects within the body. Further, the application of mathematical modelling can validate the measurement outcomes. These findings serve as a foundation for creating an affordable and straightforward foreign body detector.
背景
由于这些微小的异物体积小且位于皮下，因此难以通过视觉识别，同时它们还可能引发感染。
方法
我们开发了一种基于 Rosencwaig-Gersho 光声理论和双调制器方法的非接触式光声系统，用于检测肉类中的异物。
结果
实验验证了该测量技术的成功开发，其空间分辨率为 10 μm，对应的数学模型与实验结果相比，平均绝对百分比误差（MAPE）为 11%。双调制器成功地将激光能量调节到 MPE 极限。
结论
非接触式光声信号强度测量可用于识别体内的异物。此外，数学建模的应用可以验证测量结果。这些发现为制造一种经济实惠且简单易用的异物探测器奠定了基础。
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