Reconstruction of individual absorbed doses by tooth enamel on the base of non-linear simulation of their EPR-spectra.
Model of separate spectral lines composing EPR-spectra of tooth enamel can be described with fine accuracy by integral of convolution of three distribution functions: Lorenzian, Gaussian and anisotropy. Simulation of spectra was done by the method of optimisation of non-linear parameters combined with the Gauss method of exclusion for linear parameters to obtain the minimum of the sum of the squares of the differences between the experimental EPR-spectrum and its model. The final result was the deconvolution of complex EPR-spectrum into its components (the background and radiation-induced signals) with the following reconstruction of the individual absorbed dose.
Laboratory for EPR-Dosimetry and Cytology Research Clinical Institute for Radiation Medicine and Endocrinology, Minsk, Belarus.
S
S
Dubovsky
V
V
Kirillov
D016880:Anisotropy; D003198:Computer Simulation; D003743:Dental Enamel / Q000528:radiation effects*; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008962:Models, Theoretical; D011829:Radiation Dosage; D015203:Reproducibility of Results