On the linear shift invariance of photon diffusion imaging in highly scattering media

We present an analytical perturbation analysis for studying the imaging characteristics of photon diffusion imaging in highly scattering media such as human tissues. Factors affecting the image formation in practical imaging system are taken into account, including the photon source, the optical pro...

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Bibliographic Details
Published in:Journal of modern optics 1999-11, Vol.46 (14), p.1985-1993
Main Authors: Zeng, Shaoqun, Luo, Qingming, Gong, Hui, Chen, Weiguo, Shi, Dinghe, Chance, Britton
Format: Article
Language:English
Subjects:
Biological and medical sciences
Differential equations
Diffraction and scattering
Exact sciences and technology
Fourier transforms
Fundamental and applied biological sciences. Psychology
Fundamental areas of phenomenology (including applications)
General aspects, investigation technics, apparatus
Invariance
Optical properties
Optics
Perturbation techniques
Photons
Physics
Scattering of visible, uv, and infrared radiation
System theory
Tissue
Tissues, organs and organisms biophysics
Transfer functions
Wave optics
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Summary:We present an analytical perturbation analysis for studying the imaging characteristics of photon diffusion imaging in highly scattering media such as human tissues. Factors affecting the image formation in practical imaging system are taken into account, including the photon source, the optical properties of the sample, and the measurement system. A concise relationship between the internal structure and the detected signal is derived. Based on this, it is proved that photon diffusion imaging possess the property of linear shift invariance. The image formation mechanism in measurements such as functional imaging or tumour early diagnosis is illustrated from the viewpoint of the linear shift invariant system.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500349908231387