Method and device for dual energy X-ray photography

A photographic equipment and X-ray technology, applied in computerized tomography scanners, echo tomography, etc., can solve the problems of X-ray focus shift and ghost images

Inactive Publication Date: 2013-01-30
赵建国
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although GE's dual-energy X-ray imaging system can read X-ray images in real time, it requires two X-ray exposures successively
Due to the need for two successive exposures, the dual-energy X-ray imaging system is very sensitive to the motion of the subject, and ghost images may appear between the acquired high-energy X-ray images and low-energy X-ray images
In addition, since the X-ray energy switch switches the exposure tube voltage of the X-ray tube, the X-ray focal point in the X-ray tube shifts between two exposures, which also causes high-energy X-ray images and low-energy X-ray images to be acquired. Ghosting between X-ray images

Method used

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  • Method and device for dual energy X-ray photography

Examples

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no. 1 example

[0046] exist figure 1 In , a dual-energy X-ray imaging method 100 according to a first embodiment of the present invention is shown.

[0047] The dual-energy X-ray imaging method 100 according to the first embodiment of the present invention starts at step S105.

[0048] In step S110, the dual-energy X-ray imaging system is initialized, at least including setting exposure parameters of the X-ray source. The exposure parameters of the X-ray source may include at least one of exposure tube voltage, exposure tube current, and exposure time of the X-ray source.

[0049] Next, in step S120, X-rays are emitted from the X-ray source with the set exposure parameters, and the object to be photographed is irradiated with the X-rays emitted by the X-ray source.

[0050] In step S130, a computerized radiography panel (CR panel) is used to image the X-rays transmitted through the subject to form a CR panel imaging image. In step S140, a photographic image of the computed radiography pan...

no. 2 example

[0090] Next, combine the Figure 5-7 A dual-energy X-ray imaging method and apparatus according to a second embodiment of the present invention will be described.

[0091] exist Figure 5 In , a dual energy radiography method 500 according to a second embodiment of the present invention is shown.

[0092] The dual energy radiography method 500 according to the second embodiment of the present invention starts at step S505.

[0093] In step S510, the dual-energy X-ray imaging system is initialized, at least including setting exposure parameters of the X-ray source. The exposure parameters of the X-ray source may include at least one of exposure tube voltage, exposure tube current, and exposure time of the X-ray source.

[0094] Next, in step S520, X-rays are emitted from the X-ray source with the set exposure parameters. In step S525, the X-rays emitted from the X-ray source are filtered by the first X-ray filter. In step S530, the subject is irradiated with X-rays passing...

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Abstract

The invention provides a method and a device for dual energy X-ray photography. The method includes: using a computer X-ray photography plate to image X-rays permeating an object; using a first X-ray filter to filter X-rays permeating the computer X-ray photography plate; and using a digital X-ray detector to image X-rays permeating the first X-ray filter. The method and the device use single X-ray exposure to obtain dual energy X-ray images, and accordingly false contour, such as false contour caused by movement of the object and false contour caused by tube voltage change of X exposure tubes, caused by twice X-ray exposure can be effectively avoided.

Description

technical field [0001] The invention relates to the field of dual-energy X-ray photography, and in particular to a dual-energy X-ray photography method and equipment. Background technique [0002] Dual-energy radiography is used to acquire two X-ray images with different average X-ray energies (ie, low average energy and high average energy) at the same viewing angle, ie, a low-energy X-ray image and a high-energy X-ray image. By combining the low-energy x-ray image and the high-energy x-ray image, an image of a specific feature can be derived. For example, for an image of the chest cavity of a human body, only bone images and / or only soft tissue images may be derived using dual-energy radiography. [0003] Currently, there are two types of dual energy radiography systems on the market. One type of dual-energy X-ray imaging system is Fuji's Dual-energy X-ray imaging system, which realizes dual-energy X-ray images by using two CR (Computer Photography) plates and inserting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
Inventor 赵建国
Owner 赵建国
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