中国光学（中英文）2024，Vol.17Issue(2)：444-455,12.DOI:10.37188/CO.2023-0114
一种基于前向成像模型的光声层析图像重建方法
A photoacoustic tomography image reconstruction method based on forward imaging model
摘要
Abstract
Aiming at the issue of degraded image quality in photoacoustic tomography(PAT)caused by the inhomogeneous light fluence distribution,complex optical and acoustic properties of biological tissues,and non-ideal properties of ultrasonic detectors,we propose a comprehensive forward imaging model.The model takes into account variables such as the inhomogeneous light fluence,unsteady speed of sound,spatial and electrical impulse responses of ultrasonic transducers,limited-view scanning,and sparse sampling.The in-verse problem of the imaging model is solved by alternate optimization,and images representing optical ab-sorption and speed of sound(SoS)distributions are reconstructed simultaneously.The results indicate that the structural similarity of the reconstructed images of the proposed method can be enhanced by about 83%,56%,and 22%,in comparison with back projection,time-reversal,and short-lag spatial coherence techniques,respectively.Additionally,the peak signal-to-noise ratio can be improved by approximately 80%,68%and 58%,respectively.This method considerably enhances the image quality of non-ideal imaging scenarios when compared to traditional techniques.关键词
光声层析成像/图像重建/前向成像模型/探测器脉冲响应/有限角度扫描/稀疏采样Key words
photoacoustic tomography/image reconstruction/forward imaging model/pulse response of de-tector/limited-view scanning/sparse sampling分类
信息技术与安全科学引用本文复制引用
程丽君,孙正,孙美晨,侯英飒..一种基于前向成像模型的光声层析图像重建方法[J].中国光学（中英文）,2024,17(2):444-455,12.基金项目
国家自然科学基金资助项目(No.62071181)Supported by National Natural Science Foundation of China(No.62071181) （No.62071181）
