不同扫描步长对光声成像的影响  

Influence of Different Scanning Step on Photoacoustic Imaging

作　　者：黄新民[1] 

机构地区：[1]陕西理工学院物理与电信工程学院,陕西汉中723003

出　　处：《安徽农业科学》2013年第2期485-486,489,共3页Journal of Anhui Agricultural Sciences

基　　金：陕西省科技厅基础研究项目(2011JM1016);陕西省教育厅基础研究项目(11JK0930)

摘　　要：[目的]为了研究不同扫描步长对光声成像的影响,提高光声成像的质量。[方法]采用旋转扫描和滤波反投影算法。[结果]扫描步长越小,其成像效果越好,但当单位角度内扫描次数达0.1次以上时,重建图像质量提高并不明显。[结论]该研究对多元光声探测器的合理设计和光声实时成像具有较好的参考价值。[Objective] The research aimed to study the influence of different scanning step on photoacoustic imaging and improve the quality of reconstructed image.[Method]An algorithm of filter back-projection and rotary scanning were carried out.[Result] Better quality of photoacoustic imaging could be obtained when the scanning step was less,however it increased little when the number of scans in unit angle was more than 0.1.[Conclusion]The study was helpful for the design of transducers and real time reconstruction imaging.

关 键 词：医用光学与生物技术 光声成像 光声信号 扫描步长 

分 类 号：S123[农业科学—农业基础科学]