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相对幅度和相位对相位阵列系统的影响及消除 被引量：1

Effects of Relative Amplitude and Phase on Phased-Array System and Their Elimination
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摘要 用扩散近似的解析模型分析了幅度相消相位调制系统对组织中微小异质子实现定位的原理 ;详细讨论了相对幅度、相对相位、异质子的大小和吸收系数对系统定位精度的影响。提出了一种与相对幅度和相位无关的定位方法并从理论上解释了这种方法的原理和可行性。 The principle of localization of a small object in tissues using an amplitude cancellation phase modulation system (or phased-array system) is explained by an analytical model of the diffusion approximation. The effects of various factors on localization of the object using Phased-array system are discussed, which include the relative phase and the amplitude between two sources, the absorption coefficient and the size of absorbers. A localization method independent of the relative amplitudes and phase between two sources is presented. The principle of the method is explained and its feasibility is proved theoretically.
作者 吴龟灵 骆清铭 曾绍群 刘贤德
机构地区 华中理工大学生物医学光子学教育部重点实验室
出处 《光学学报》 EI CAS CSCD 北大核心 2002年第2期243-248,共6页 Acta Optica Sinica
基金 国家自然科学基金 (NNSF 6 97780 0 4)资助课题
关键词 相位调制系统 幅度相消 光子密度波 空间定位 相对幅度 相对相位 相位阵列系统 生物组织 异质子 吸收系数 phase modulation spectroscope (PMS) amplitude cancellation photon density wave spatial localization
分类号 Q63 [生物学—生物物理学]
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参考文献12

  • 1Colak S B, Papsioannou D G, Hooft G W't et al..Tomographic image reconstruction from optical projections in light-diffusing media. Appl. Opt., 1997, 36(1):180-213 被引量：1
  • 2Andress H H, Alexander D K, Ketch M H. Gradient-based iterative image reconstruction scheme for time-resolved optical tomography. IEEE Transaction on Medical Imaging, 1999, 15(3):262-271 被引量：1
  • 3Boas D A.A fundamental limitation of linearized algorithms for diffuse optical tomography.Opt.Express,1997, 1(13):404-413 被引量：1
  • 4Alfano R R, Pradhan A, Tang G C et al.. Optical spectroscopic diagnosis of cancer and normal breast tissues.J. Opt. Soc. Am. (B), 1989, 6(5):1015-1023 被引量：1
  • 5Knuttel A, Schmitt J M, Knutson J R. Spatial localization of absorbing bodies by interfering diffusive photon-density waves. Appl. Opt., 1993, 32(4):381-389 被引量：1
  • 6Chance B, Kang K, He L. Highly sensitive object location in tissue models with linear in-phase and anti-phase multi-element optical arrays in one and two dimensions. Proc.Natl. Acad. Sci. USA, 1993, 90(8):3423-3427 被引量：1
  • 7Chance B, Kang K A, He LiBo et al., Precision localization of hidden absorbers in body tissues phased-array optical systems Rev. Sci. Instrum., 1996, 67(12):4324-4332 被引量：1
  • 8Erickson M G, Reynolds J S, Webb K J. Comparison of sensitivity for single-source and dual-interfering-source configurations in optical diffusion imaging. J. Opt.Soc.Am. (A), 1997, 14(11):3083-3092 被引量：1
  • 9Zhou S, Chen Y, Zou Q et al.. A portable dual wavelength amplitude cancellation image system for the determination of human breast tumor. Proc. SPIE, 1999,3597:571 - 579 被引量：1
  • 10Chen Y, Zhou S, Xie C et al.. Preliminary evaluation of dual-wavelength phased array imaging on neonatal brain function. J. Biomed. Opt., 2000, 5(2):206-213 被引量：1

同被引文献13

  • 1Colak S B, Papaioannou D G, Hooft G W. Tomographic image reconstruction from optical projections in light-diffusing media. Appl. Opt. , 1997, 36(1):180-213 被引量：1
  • 2Andreas H H, Alexander D K, Kenneth M H. Gradient-based iterative image reconstruction scheme for time-resolved optical tomography. IEEE Transaction on Medical Imaging, 1999, 18(3) :262-271 被引量：1
  • 3Boas D A. A fundamental limitation of linearized algorithms for diffuse optical tomography. Optics Express, 1997, 1(13):404-413 被引量：1
  • 4Alfano R R, Pradham A, Tang G C et al.. Optical spectroscopic diagnosis of cancer and normal breast tissues. J. Opt. Soc. Am. (B), 1989, 6(5):1015-1023 被引量：1
  • 5Schmitt A J M, Knutson J R. Spatial localization of absorbing bodies by interfering diffusive photon-density waves. Appl. Opt., 1993, 32(4):381-389 被引量：1
  • 6Chance B, Kang K, He L. Highly sensitive object location in tissue models with linear in-phase and anti-phase multielement optical arrays in one and two dimensions(Correction). P C Magazine : The Independent Guide to IBM-Standard Personal Computers, 1995, 14 (12) : 4074-4078 被引量：1
  • 7Chance B, Kang K A, He L et al.. Precision localization of hidden absorbers in body tissues phased-array optical systems. Rev. Sci. Instrum. , 1996, 67(12) :4324-4332 被引量：1
  • 8Erickson M, Reynolds J, Webb K. Comparison of sensitivity for single-source and dual-interfering-source configurations in optical diffusion imaging. J. Opt. Sac.Am. (A), 1997, 14(11):3083-3092 被引量：1
  • 9Zhou S, Chen Y, Zou Q et al.. A portable dual wavelength amplitude cancellation image system for the determination of human breast tumor. Proc. SPIE, 1999,3597: 571- 578 被引量：1
  • 10Chen Y, Zhou S, Xie C et al.. Preliminary evaluation of dual-wavelength phased array imaging on neonatal brain function. J. Biomed. Opt., 2000, 5(2):206-213 被引量：1

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光学学报
2002年 第2期

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