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Method for simulating output data of energy spectrum CT system

A technology of output data and simulation method, applied in the field of output data of energy spectrum CT system, can solve problems such as slow calculation speed, achieve the effect of improving accuracy and speed, enriching research methods, and promoting development

Active Publication Date: 2020-01-17
TIANJIN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The error in the current Monte Carlo simulation method is a probability error, and it needs to calculate a lot of steps, and the probability statistics of tens of thousands of particles is very slow.

Method used

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  • Method for simulating output data of energy spectrum CT system
  • Method for simulating output data of energy spectrum CT system
  • Method for simulating output data of energy spectrum CT system

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Embodiment Construction

[0052] A method for simulating output data of a spectral CT system according to the present invention will be described in detail below with reference to the embodiments and drawings.

[0053] The method for simulating output data of an energy spectrum CT system of the present invention firstly models the detector pixel units on a simulation platform, then sets the pixel units in an array, and sets the phantom and the ray source. Using random probability distribution method, taking into account the influence of photoelectric effect and Compton effect on particle motion and the precise numerical analysis method of secondary collision and other factors, to obtain high-precision medical CT imaging data.

[0054] Such as figure 1 As shown, a kind of simulation method of spectral CT system output data of the present invention comprises the following steps:

[0055] 1) Build a detector array on the simulation platform;

[0056] The detector array is built on the Monte Carlo simula...

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Abstract

The invention provides a method for simulating the output data of an energy spectrum CT system. The method comprises the steps of establishing a detector array on a simulation platform; setting an X-ray light source and a body model; setting a physical module, and obtaining the total number of electron-hole pairs after collision according to the physical module; and verifying the total number of electron-hole pairs after collision via body model imaging. By adopting the method provided by the invention, the simulation speed and the simulation accuracy of particle detection can not only be improved, the accuracy and the speed of generating medical data sets can also be improved to promote the development of the medical image processing field. By adopting the method provided by the invention, related research methods are enriched, the experimental process is further simplified, and the costs of human and material resources required for the experiment are reduced.

Description

technical field [0001] The invention relates to a simulation method for outputting data. In particular, it relates to a method for simulating output data of an energy spectrum CT system during a CT scanning process and a photoelectric conversion process of a detector in the CT. Background technique [0002] In recent years, Computed Tomography (CT) has developed rapidly and is widely used in clinical medicine, industrial diagnosis, security detection and other fields. In clinical medicine, CT technology is often used to obtain images of the internal structure of the human body in a non-invasive manner. The traditional CT technology not only cannot make full use of the X-ray source, but also has a considerable amount of radiation, which will cause many harms to the human body and face the risk of being eliminated. Compared with traditional CT, spectral CT has higher imaging accuracy and quality, better soft tissue contrast and lower radiation dose. At the same time, energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/046A61B6/03A61B6/00
CPCG01N23/046A61B6/032A61B6/4208G01N2223/03G01N2223/1016G01N2223/401G01N2223/419G01N2223/612
Inventor 史再峰黄泳嘉王子菊曹清洁罗韬
Owner TIANJIN UNIV
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