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X ray imaging arrangement and method

An X-ray and transmission image technology, applied in the field of X-ray imaging, can solve the problems of the effective thickness change of the object to be detected, increasing the burden of experimental equipment and experimental cost, etc.

Inactive Publication Date: 2010-11-17
ZHONGBEI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can better solve the problem of large changes in the effective thickness of the object to be detected, it increases the burden of experimental equipment and experimental costs due to the need for several ray sources to work at the same time.

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  • X ray imaging arrangement and method

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0035] Aiming at the problems existing in the prior art, a new X-ray imaging solution is proposed in the present invention. According to the nature of X-rays, that is, the penetrating ability of X-rays depends on the voltage of the X-ray source tube. The greater the voltage of the X-ray source tube, the stronger the penetrating ability of X-rays, and accordingly the greater the effective thickness it passes through. Then, for the object to be detected whose effective thickness change rate is relatively large in the transmission direction of X-rays, the X-ray source tube voltage can be changed, that is, the variable dose (in the present invention, the dose can be equivalently understood as the X-ray source tube voltage ) imaging technology to complete th...

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Abstract

The invention discloses an X-ray imaging device which comprises a dose-varying imaging module used for adjusting the X-ray source tube voltage in real time according to the change of the effective thickness of an object to be tested in the transmission direction during a scanning process, and carrying out X-ray scanning on the object to be tested according to the adjusted X-ray source tube voltage and sending all the transmission images obtained by scanning to an image processing module; and the image processing module used for carrying out lifting in a dynamic range and image fusion so as toobtain the final needed transmission images. Simultaneously, the invention discloses an X-ray imaging method. The method and the device can be applied to the detection of objects to be tested with arbitrary complex construction without the influence of the change of effective thickness of the objects to be tested in the transmission direction of X-ray.

Description

technical field [0001] The invention relates to X-ray imaging technology, in particular to a variable dose X-ray imaging device and method. Background technique [0002] In a digital X-ray imaging system, the dynamic range refers to the ratio of the maximum gray level to the minimum gray level of the scanned transmission image, which is determined by the dynamic range of the digital imaging device. The dynamic range of a digital imaging device is determined by its own digital / analog conversion (A / D) digits. For example, for a digital imaging device using a 12-bit A / D, the maximum dynamic range will not exceed 4094 / 1. [0003] When using the above-mentioned digital X-ray imaging system for X-ray inspection, if the effective thickness of the object to be inspected varies greatly in the direction of X-ray transmission, a transmission image of poor quality may be obtained. This is because: when the effective thickness of the object to be detected changes greatly in the transmis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/04A61B6/02G01B15/00G03B42/02H05G1/32H05G1/64
Inventor 韩焱潘晋孝王鉴王黎明陈方林陈平
Owner ZHONGBEI UNIV