RECONSTRUCTION OF X-RAY DUAL-ENERGY COMPUTER TOMOGRAPHY Russian patent published in 2016 - IPC G01N23/04 

FIELD: instrumentation.

SUBSTANCE: claimed invention is tended for reconstruction of X-ray dual-energy computer tomography. Proposed invention comprises the steps that follow. (a) Evaluation of energy spectrum and creation of duel-energy search table. (b) Acquisition of data on high energy P^H and data on low energy P^L of the system of imaging of dual-energy CT with the use of dual-energy CT imaging system detector. (c) Image acquisition in projections R₁ and R₂ of scaled images r₁ and r₂ in compliance with obtained data on said high and low energy P^H and P^L. (d) Reconstruction of scaled image r₂ with the use of the first condition of piecewise smoothness limitation, hence, the electron density imaging. (e) Reconstruction of scaled image r₁ with the use of the second condition of piecewise smoothness limitation, hence, the equivalent atomic number imaging. In compliance with this invention, the noise in duel-energy image reconstruction can be efficiently suppressed at resolution preservation by efficient application of info presenting the data.

EFFECT: reconstruction of high-quality image.

11 cl, 2 dwg