23 research outputs found
Jones-matrix tomography of biological tissues phase anisotropy in the diagnosis of uterus wall prolapse
The work consists of two parts. In the first part - we mapped a distribution of optical activity and birefringence in polycrystalline networks of biological tissues. The Jones-matrix formalism is used for accessible quantitative description of these types of optical anisotropy. We demonstrate that differentiation of polycrystalline networks of biological tissues can be performed based on the statistical analysis of distribution of rotation angles and phase shifts associated with the optical activity and birefringence, respectively. In the second part we defined - practical operational characteristics, such as sensitivity, specificity and accuracy of Jones-matrix reconstruction of optical anisotropy were identified with the special emphasis on biomedical application, specifically for differentiation of two types of pathology: prolapse and albuminuria
3D Mueller-matrix mapping of biological optically anisotropic networks
The paper consists of two parts. The first part presents short theoretical basics of the method of azimuthally-invariant Mueller-matrix description of optical anisotropy of biological tissues. It was provided experimentally measured coordinate distributions of Mueller-matrix invariants (MMI) of linear and circular birefringences of skeletal muscle
tissue. It was defined the values of statistic moments, which characterize the distributions of amplitudes of wavelet coefficients of MMI at different scales of scanning. The second part presents the data of statistic analysis of the distributions of amplitude of wavelet coefficients of the distributions of linear birefringence of myocardium tissue died after the infarction and ischemic heart disease. It was defined the objective criteria of differentiation of the cause of death
Wavelet analysis for polarization inhomogeneous laser images of blood plasma
The possibilities of the local wavelet-analysis of polarization-inhomogeneous laser image of human blood plasma were considered. The set of statistics, correlation and fractal parameters of the distributions of wavelet-coefficients that are characterize different scales of the polarization maps of polycrystalline networks of amino acids of blood plasma were defined. The criteria for the differentiation of the transformation of birefringence optical-anisotropic structures of blood plasma at different scales of their geometric dimensions were determined
Jones-matrix diagnostics of the structure and classification of optical properties inherent to birefringent polycrystalline networks of human biological tissues
Performed in this work is the complex statistical, correlation and fractal
analysis of coordinate distributions of Jones-matrix elements corresponding to
birefringent networks of liquid crystals in human biological liquids (saliva, blood plasma,
bile). The authors have determined the values and ranges for changing statistical,
correlation and spectral moments of the 1-st to 4-th orders that characterize Jones-matrix
images of these objects. Ascertained are objective criteria for classification and
differentiation of optical properties inherent to polycrystalline networks of biological
crystals with various kinds of spatial symmetry: dendrite, spherolite and cluster ones
Laser autofluorescent microscopy of histological sections of parenchymatous biological tissues of the dead
The results of laser autofluorescence microscopy of the distribution of the intensity of the MLA of polycrystalline structures of biological tissue preparations are presented. The data of a statistical analysis of the distribution of the magnitude of the intensity of MLA networks of biological crystals of histological sections of tissues of the spleen and
kidney with the parenchymal morphological structure of the dead with different levels of blood loss are presented
Polarization Correlometry of Birefringence Images of Human Blood Layers
To analyze the coordinate-like structure of Stokes-parametric and Mueller-matrix images of optically anisotropic components of biological tissues, the two-point polarization-correlational approach was applied. On this basis parameters the method of cross-correlational definition of parameters (average sizes, asymmetry factor) of correlational contour was developed, which defines the topographical structure of the characteristic meanings of Stokes-parametric and Mueller-matrix images of histological sections of biological tissues
3D Mueller-matrix mapping of biological optically anisotropic networks
In the set of works it were defined the algorithms and methods of polarimetric and correlation obtaining of the information about 2D distributions of optical anisotropy of biological tissues. As the basis of theoretical description of the method of 3D Mueller-matrix mapping it was
used the results obtained in
Jones-matrix tomography of biological tissues phase anisotropy in the diagnosis of uterus wall prolapse
In the ground of this work it has been chosen the matrix approach for investigation of the structure of biological objects. Theoretical backgrounds of the method of mapping of anisotropy parameters of polycrystalline component of biological layers are in details provided in the set of work
Laser autofluorescent microscopy of histological sections of parenchymatous biological tissues of the dead
The results of experimental testing of the diagnostic capabilities of the method of spectral-selective fluorescence microscopy of temporary necrotic changes in histological sections of kidney internal organs are presented