DR/CT digital object construction method and system

Abstract

The invention discloses a DR/CT digital object construction method which comprises the following steps: performing isotropic tomography on a real object through dual-energy CT to obtain two groups of CT images with different energies of tissues in a layer, establishing a CT value matrix of first energy and a CT value matrix of second energy; obtaining an electron density three-dimensional distribution matrix of the voxel of the object according to the CT value matrix of the first energy and the CT value matrix of the second energy; calculating an effective atomic number matrix according to the obtained electron density matrix of the voxel; and calculating an electron density three-dimensional distribution matrix and an effective atomic number matrix of each voxel, and combining the electron density three-dimensional distribution matrix and the effective atomic number matrix with the three-dimensional space structure of the object to obtain a five-dimensional matrix, thereby obtaining a digital object. According to the method, the electron density and the effective atomic number of each voxel are obtained by applying dual-energy CT to obtain two groups of CT images with different energies, the calculation process is simple, and physical information, capable of influencing the image effect of DR or CT imaging, of internal tissues of a human body can be represented.

Description

technical field [0001] The present invention relates to the technical field of digital object modeling, in particular to a DR / CT digital object construction method and system. Background technique [0002] A digital twin is a virtual entity constructed in a virtual space to represent the real-time operating state of a physical entity. It has a full range of functions that integrate geometric modeling, simulation, and data analysis, and plays the role of comprehensive analysis and decision-making. In digital twin technology, the simulation of physical entity shape, known (or empirical) physical law and unknown physical law is realized through the construction of geometric model, mechanism model and data model respectively. In 2017 and 2018, the digital twin was rated as one of the top ten technologies that will affect the future by Gartner for two consecutive years. It has been and will gradually be used in the verification, design, testing, and maintenance of large, complex,...

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Problems solved by technology

This method uses CT slices to obtain the density and composition of voxels, but it needs to use colo

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