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Static energy resolution CT (Computed Tomography) scanner and scanning method thereof

An energy resolution and scanner technology, applied in the field of medical devices, can solve the problems of unfavorable CT imaging in signal acquisition methods, and achieve the effects of solving motion artifacts, reducing radiation dose, and easy maintenance.

Active Publication Date: 2015-01-07
SUZHOU INST OF BIOMEDICAL ENG & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the principle of CT imaging, the low-energy X-rays are more suitable for distinguishing different substances (see Figure 5 ), therefore, the signal acquisition method of integral mode is not conducive to CT imaging

Method used

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  • Static energy resolution CT (Computed Tomography) scanner and scanning method thereof
  • Static energy resolution CT (Computed Tomography) scanner and scanning method thereof
  • Static energy resolution CT (Computed Tomography) scanner and scanning method thereof

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Experimental program
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Embodiment 1

[0042] Image 6 For the system diagram of the static energy resolution CT scanner in the first embodiment of the present invention, please refer to Image 6 , in this embodiment, the static CT scanner 40 includes a power supply system 41, an X-ray source system 42, a detector system 43, a data acquisition system 44 and a computer 45, and the detector system 43 is used to receive the X-ray source The X-ray beam emitted by the system 42, the data acquisition system 44 is connected to the detector system 43 for collecting and processing the signal output by the detector system 43, and the projection output by the computer 45 to the data acquisition system 44 Data processing and image reconstruction, the power supply system 41 is respectively connected to the X-ray source system 42, detector system 43, data acquisition system 44 and computer (45) to provide the required high voltage and common power supply.

[0043] Figure 7 for Image 6 Schematic diagram of the decomposition ...

Embodiment 2

[0052] The second embodiment of the present invention provides a scanning method for the static CT scanner in the first embodiment, specifically making the several X-ray source modules 4200 sequentially emit X-rays clockwise and then counterclockwise X-rays are emitted sequentially in the direction, and the number of the corresponding X-ray source module 4200 is recorded when the detector system 43 outputs the projection data, and the output projection data is processed according to the corresponding X-ray source module 4200 numbers are rearranged.

Embodiment 3

[0054] The second embodiment of the present invention provides a scanning method for the static CT scanner in the first embodiment, specifically: first, at least two X-ray source modules 4200 of the several X-ray source modules 4200 are simultaneously emit X-rays, and ensure that the coverages of the X-ray beams emitted by the at least two X-ray source modules 4200 on the detector system do not overlap each other (see Figure 11 , Figure 11 Taking three X-ray source modules 4200 emitting X-rays at the same time as an example, A, B, and C represent the coverages of the X-ray beams emitted by the three X-ray source modules 4200 on the detector system respectively). Then move the several X-ray source modules 4200 in the clockwise direction at the same time, so that other X-ray source modules 4200 located at the original positions of the at least two ray source modules 4200 emit X-rays; then move the X-ray source modules in the counterclockwise direction simultaneously. The seve...

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Abstract

The invention relates to a static energy resolution CT (Computed Tomography) scanner which comprises a power system, an X-ray source system, a detector system, a data acquisition system and a computer, wherein the X-ray source system comprises an annular X-ray source and an annular front collimator, the annular X-ray source comprises a plurality of X-ray source modules based on carbon nano tubes, a plurality of collimator slits are distributed on the annular front collimator, and each X-ray source module corresponds to a collimator slit; the detector system comprises two annular detectors arranged at the inner side of the annular X-ray source, a slit is reserved between the annular detectors, and each annular detector consists of a plurality of detector modules used for carrying out energy resolution on X photons; the data acquisition system is connected behind the detector system and also connected with the computer; and X photons emitted out by the X-ray source sequentially pass through the slits of the annular front collimator and the slit between the annular detectors and are projected onto a detection surface at the opposite side. The static energy resolution CT scanner has the advantages of simple structure, low radiation dosage and short time of scanning for a circle.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a static energy resolution CT scanner and a scanning method thereof. Background technique [0002] At present, CT scanners have been widely used in clinical practice. In order to realize cross-sectional or stereoscopic imaging, there are two schemes for CT scanners currently in use. The first scheme is that the CT tube rotates around the human body to obtain projection images of the imaging object at different angles of view (see figure 1 and figure 2 ); the second scheme is to use a large-scale special scanning electron beam X-ray tube, control the position of the electron beam bombardment target through the deflection coil, and then obtain the projection images of different viewing angles (see image 3 ). [0003] Regardless of the first scheme or the second scheme, the principle of generating X-rays is basically the same. Both heat the filament first, and emit thermal ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
Inventor 代秋声邢晓曼徐品刘猛
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH
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