Method and device for decomposing base material in dual-energy spectrum CT projection domain based on deep learning
A deep learning and base material technology, applied in neural learning methods, projection reproduction, 2D image generation, etc., can solve problems such as the limitation of the scope of application, and achieve the effect of simple training phantom, strong flexibility, and high image quality.
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[0054] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0055] The polychromatic projection formula measured after the X-ray passes through the object along a ray L is as follows:
[0056]
[0057] where q m (L) is the X-ray energy spectrum w normalized with the mth m (E) The detected polychromatic projection when scanning the measured object; μ(x, E) is the linear attenuation coefficient of the measured object with respect to the energy E at point x; S m is the influence of scatterin...
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