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Cone beam CT system with multiple detectors

A detector and cone-beam technology, applied in the field of computed tomography, can solve the problem of not being able to take into account both large-field imaging and high-resolution imaging

Pending Publication Date: 2017-03-15
LARGEV INSTR CORP LTD
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  • Application Information

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Problems solved by technology

[0006] An oral X-ray machine with multiple detectors has been mentioned in the existing literature, wherein the multiple detectors refer to line array detectors and area array detectors, which can take into account two-dimensional perspective imaging and three-dimensional cone Beam CT imaging, but can not take into account both large-field imaging and high-resolution imaging

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  • Cone beam CT system with multiple detectors
  • Cone beam CT system with multiple detectors
  • Cone beam CT system with multiple detectors

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Embodiment Construction

[0023] Such as figure 1 , 2 , 3, and 4, the system of the present invention consists of scanning frame 1 (comprising the fixed part 1-1 of scanning frame, the rotating part 1-2 of scanning frame), X-ray generator 2, multi-block area array detector ( The figure only shows the large-area detector 3-1 and the high-resolution detector 3-2), the detector switching device 4, the carrying mechanism 5, the controller 6, and the CT reconstruction module 7.

[0024] The scanning frame 1 is the main frame of the system, which determines the overall structure of the system, and has the functions of supporting, moving and providing installation positions for other components. The X-ray generator 2 , the large area detector 3 - 1 , the high resolution detector 3 - 2 and the detector switching device 4 are all installed on the scanning frame 1 . In a system that uses X-ray generators and area array detectors to rotate and scan, X-ray generators 2, large-area detectors 3-1, high-resolution ...

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Abstract

The invention relates to a cone beam CT system with multiple detectors. The cone beam CT system comprises a scanning frame, an X-ray generator, a bearing mechanism, a controller, a CT reconstruction module, a plurality of plane-array detectors and a detector switching device. The detector switching device carries out switching as required to select one of the multiple plane-array detectors, namely only one detector is used in each scanning; the multiple plane-array detectors comprise a large-area detector and a high-resolution detector; when large-visual-field imaging is needed, the large-area detector can be selected; when high-resolution imaging is needed, the small-pixel high-resolution detector can be selected. Large-visual-field imaging and high-resolution imaging can be integrated in one cone beam CT system, and the resolution is higher than that of a conventional solution.

Description

technical field [0001] The invention relates to a cone-beam CT system equipped with multiple detectors, belonging to computed tomography (CT). Background technique [0002] Cone beam CT is an X-ray CT system that uses area array detectors for three-dimensional imaging. The scanning frame of the system is composed of an X-ray generator, an area array detector, a bearing mechanism, a controller, and a CT reconstruction module. During scanning, the X-ray generator and detector rotate around the object to obtain multiple projection data from different angles, and then transform the projection data into three-dimensional data through the CT reconstruction module. [0003] Spatial resolution is a key technical indicator of cone beam CT system, which depends on the combination of the following factors: detector resolution, X-ray focus size, number of projection images, reconstruction pixel size, etc. Among them, the detector resolution is one of the most important factors determi...

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Application Information

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IPC IPC(8): G01N23/04
CPCG01N23/046
Inventor 吴宏新李建军张康平孙来玉王亚杰张文宇俞冬梅
Owner LARGEV INSTR CORP LTD
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