Near-infrared spectral tomography reconstruction method based on neural network
A technology of near-infrared spectroscopy and tomography, which is applied in the field of medical image processing and can solve the problems of long imaging reconstruction time and so on.
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[0045] The present invention will be described below based on specific implementation examples and accompanying drawings.
[0046] First of all, through the Matlab toolbox nirfast to establish the phantom and complete the finite element meshing of the phantom. This experiment uses a circular phantom, and the finite element meshing results are as follows figure 2 shown. A total of 16 light sources and 16 light detectors were set up in the experiment, and these detectors were image 3 As shown, it is placed on the outer boundary of a circular phantom with a diameter of 90 mm. A total of 256 measured values can be obtained through light sources and detectors. The imaging pixels are 2001 uniform finite element nodes on the circle. The measured values and each The absorption coefficient value of the finite element node is used as the input and output of the BP neural network. The initial absorption coefficient distribution is as Figure 4 shown. The data set used for netwo...
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