光子学报, 2011, 40 (1): 103, 网络出版: 2011-03-08   

利用维纳滤波改善声透镜光声成像系统的分辨率

Resolution Improvement of Photoacoustic Imaging System Based on an Acoustic Lens with Winere Filter
作者单位
华南师范大学 物理与电信工程学院,广州 510006
摘要
为了克服衍射效应对光声成像系统分辨率的限制,需要采用逆卷积方法进行图像反演.从理论上分析了声透镜成像原理,模拟仿真了声透镜的点扩展函数对声透镜成像系统分辨率的影响和维纳滤波解卷积方法复原光声成像的过程,并利用自搭建的声透镜光声成像系统进行了深入的实验研究,得到了物平面上相距4 mm和3 mm的两个黑胶带点的直接成像光声图以及经过维纳滤波解卷积方法得到的还原图,并进行了比较.仿真结果与实验结果一致表明:用维纳滤波解卷积方法可以提高光声成像系统的分辨率.
Abstract
In order to overcome the limitation of diffraction effect on the resolution of photoacoustic imaging system,the deconvolution method needs to be used for image retrieval.The acoustic lens imaging theory was introduced firstly,and the effect of the acoustic lens point spread function was simulated based on the resolution of acoustic lens-based imaging system and photoacoustic imaging restoration process of Wiener filter deconvolution.Using self-erected acoustic lens-based photoacoustic imaging system,the direct photoacoustic imaging pictures and the restored pictures from Wiener filter deconvolution of two dots of black adhesive tape with a distance of 4 mm and 3 mm are obtained and compared.The simulation and experimental results indicate that Wiener filter deconvolution can improve the resolution of photoacoustic imaging system.
参考文献

[1] . Photoacoustic imaging in biomedicine[J]. Rev Sci Instrum, 2006, 77(4): 041101.

[2] . Temporal backward projection of optoacoustic pressure transients using Fourier transform methods[J]. Phys Med Biol, 2001, 46(7): 1863-1872.

[3] 向良忠,邢达,谷怀民,等.基于探测超声的生物组织无损光声层析成像[J].光子学报,2007,36(7):1307-1311.

    XIANG Liang-zhong,XING Da,GU Huai-ming,et al.Noinvasive photoacoustic tomography in biological tissue with ultrasonic probe beam[J].Acta Photonica Sinica,2007,36(7):1307-1311.

[4] 谭毅,何军锋.基于多元相控技术的一体化光声快速成像系统[J].光子学报,2007,36(9):1726-1729.

    TAN Yi,HE Jun-feng.Integrative Fast Photoacoustic Imaging System Based on Multi-element Phase-controlled Technique[J].Acta Photonica Sinica,2007,36(9):1726-1729.

[5] . Noninvasive laser-induced photoacoustic tomography for structural and functional in vivo imaging of the brain[J]. Nat Biotechnol, 2003, 21(7): 803-806.

[6] 曾吕明,刘国栋,任重,等.基于LabVIEW平台的高准确度光声成像系统设计[J].光子学报,2008,37(7):1436-1440.

    ZENG Lü-ming,LIU Guo-dong,REN Zhong,et al.Design of high-resolution photoacoustic imaging system based on LabVIEW station[J].Acta Photonica Sinica,2008,37(7):1436-1440.

[7] . Photoacoustic mammography laboratory prototype:imaging of breast tissue phantoms[J]. J Biomed Opt, 2004, 9(6): 1172-1181.

[8] . Fast photoacoustic imaging system based on 320-element linear transducer array[J]. Phys Med Biol, 2004, 49(7): 1339-1346.

[9] . Deeply penetrating photoacoustic tomography in biological tissues enhanced with an optical contrast agent[J]. Opt Lett, 2005, 30(5): 507-509.

[10] 李凌燕,郑楚君,唐志列,等.对光声成像系统中声透镜的二元声学研究[J].光学学报,2005,25(10):1313-1318.

    LI Ling-yan,ZHENG Chu-jun,TANG Zhi-lie,et al.Binary Acoustics Study on Optoacoustic Imaging Lens[J].Acta Optica Sinica,2005,25(10):1313-1318.

[11] 陈湛旭,唐志列,万巍,等.基于声透镜成像系统的光声层析成像[J].物理学报,2006,55(8):4365-4370.

    CEHN Zhan-xu,TANG Zhi-lie,WAN Wei,et al.Photoacoustic tomography imaging based on an acoustic lens imaging system[J].Acta Physica Sinica,2006,55(8):4365-4370.

[12] . Photoacoustic tomography imaging using a 4f acoustic lens and peak-hold technology[J]. Opt Express, 2008, 16(8): 5314-5319.

[13] 徐险峰,唐志列,汪洁,等,光声信号的声透镜层析成像研究[J].光学学报,2003,23(9):1105-1109.

    XU Xian-feng,TANG Zhi-lie,WANG Jie,et al.Studies on acoustic lens imaging of photoacoustic signal[J].Acta Optica Sinica,2003,23(9):1105-1109.

[14] 谭毅,邢达,王毅,等.基于不同频率成份衰减矫正的光声成像方法[J].光子学报,2005,34(7):1019-1022.

    TAN Yi,XING Da,WANG Yi,et al.Photoacoustic imaging with attenuation rectification of different frequent components of photoacoustic signal[J].Acta Photonica Sinica,2005,34(1):1019-1022.

[15] 冈萨雷斯.数字图像处理 [M],阮宇智,译.2版.北京:电子工业出版社,2005:179-210.

唐秀文, 唐志列, 吴泳波. 利用维纳滤波改善声透镜光声成像系统的分辨率[J]. 光子学报, 2011, 40(1): 103. TANG Xiu-wen, TANG Zhi-lie, WU Yong-bo. Resolution Improvement of Photoacoustic Imaging System Based on an Acoustic Lens with Winere Filter[J]. ACTA PHOTONICA SINICA, 2011, 40(1): 103.

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