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用阶跃法测量光声成像系统的点扩展函数

Measurement of the Point Spread Function of a Photoacoustic Imaging System using Step Method
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摘要 从理论上证明了光声成像系统的点扩展函数是边缘响应函数的一阶导数,提出了用阶跃法测量光声成像系统的点扩展函数,用染色琼脂对本方法进行了实验验证,理论计算结果和实验测量数据有很好的一致性,为复杂光声成像系统提供了一种简单实用的点扩展函数测量方法。 We theoretically prove that the point spread function （PSF） of a photoacoustic imaging system is the first derivative of the edge response function, and a step method for measurement of the photoacoustic PSF is proposed. The proposed method is experimentally verified using dyed agarose gel phantom, and the results of theoretical calculations and experimental measurement are in good agreement. The method provides a simple and practical way to measure the PSF of a complex photoacoustic imaging system.
作者 周红仙 周有平 王毅
机构地区 佛山科学技术学院电子与信息工程学院 佛山科学技术学院理学院
出处 《光学学报》 EI CAS CSCD 北大核心 2013年第4期60-63,共4页 Acta Optica Sinica
基金 国家自然科学基金(61275214)资助课题
关键词 成像系统 点扩展函数 阶跃法 边缘响应函数 imaging systems point spread function step method edge response function
分类号 O43 [机械工程—光学工程] R312 [医药卫生—基础医学]
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参考文献20

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二级参考文献27

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光学学报
2013年 第4期

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