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A multi-energy ct imaging system

A CT imaging, multi-energy technology, applied in the field of medical imaging, can solve problems such as practical production difficulties

Active Publication Date: 2021-05-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the energy spectrum modulator adopts a grid structure, and each subunit is directly made of different materials or different thicknesses of the same material, which is difficult in actual production

Method used

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  • A multi-energy ct imaging system
  • A multi-energy ct imaging system
  • A multi-energy ct imaging system

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Embodiment Construction

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0037] A multi-energy CT imaging system proposed according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0038] The following describes the energy spectrum modulator used in the multi-energy CT imaging system of the present invention according to the accompanying drawings.

[0039] figure 1 It is an enlarged schematic plan view of an energy spectrum modulator according to an embodiment of the present invention.

[0040] The energy spectrum modulator is composed of no...

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Abstract

The invention discloses a multi-energy CT imaging system, which belongs to the field of medical imaging. The system includes: a radiation source generates radiation used for transmission imaging, the radiation source has a zoom function, and the focus position changes in X and Z dimensions; The energy spectrum modulator is located between the ray source and the object to be imaged. The energy spectrum modulator is grid-shaped and consists of not less than two overlapping one-dimensional grids that have a partial attenuation function for X-rays. The overlapping grids are composed of the same The units periodically arranged in space are used to generate different energy spectra; the detector module is used to receive the multi-energy transmission data after passing through the energy spectrum modulator and the object to be imaged; mechanical / electrical control and data transmission / The processing unit is used for controlling the ray source, the energy spectrum modulator and the detector module and processing the transmission data. The ray source of the system has the function of variable focus, and the ray passes through the energy spectrum modulator to obtain multi-energy transmission data on the detector.

Description

technical field [0001] The invention relates to the technical field of medical imaging, in particular to a multi-energy CT imaging system. Background technique [0002] Multi-energy computed tomography (Computed Tomography, CT) is one of the current research hotspots in the field of CT, mainly including dual-energy CT and spectral CT based on photon counting detectors. Compared with traditional CT, multi-energy CT utilizes the difference in the absorption capacity of substances under different X-ray energies, and can provide more image information than conventional CT, and has the advantages of improving image quality, suppressing beam hardening artifacts, and reducing radiation doses. . The current mainstream clinical dual-energy CT scanners include repeated scanning of different energy spectra twice, dual-source dual-detector, fast kilovolt switching technology, double-layer detector technology, etc., and these technologies have their own advantages and disadvantages. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/4021A61B6/4035A61B6/44
Inventor 高河伟陈志强张丽邢宇翔李亮刘以农邓一凡张涛
Owner TSINGHUA UNIV