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Focus smearing correction device, method, imaging method and computer readable medium

A technology of correction device and correction method, which is applied in radiation detection devices, radiological diagnostic image/data processing, medical science, etc., can solve problems such as focus tailing, and achieve the effect of precise synchronization of integration time

Active Publication Date: 2020-09-11
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of focus smearing, the present application discloses a focus smearing correction method on the one hand

Method used

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  • Focus smearing correction device, method, imaging method and computer readable medium
  • Focus smearing correction device, method, imaging method and computer readable medium
  • Focus smearing correction device, method, imaging method and computer readable medium

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Embodiment Construction

[0031] Various structural diagrams are used in this application to illustrate various modifications of the embodiments according to this application. It should be understood that the preceding or following structures are not intended to limit the present application. The protection scope of the present application shall be determined by the claims.

[0032] figure 1 It is a schematic diagram of a CT scanning system according to some embodiments of the present application. like figure 1 As shown, the CT scanning system 100 may include a gantry 110 , a radiation source 120 , a detector 130 , a test bed 140 , an image reconstruction module 150 , a display module 160 , an operation module 170 and a focus smearing correction device 180 . Rack 110 may be used to support one or more components in scanning system 100 . In some embodiments, a scanning cavity may be opened in the middle of the frame 110 . The ray source 120 may be used to radiate rays or signals, and the rays may i...

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Abstract

The invention relates to a focus trailing correction device and method. The method comprises the steps that integral time of a detector is determined; the sidelobe energy occupation rate is determined, wherein the sidelobe energy occupation rate is the proportion of sidelobe energy to received energy of the detector in the integral time; based on the integral time and the sidelobe energy occupation rate, correction time is determined. By using the correction time, imaging is conducted, time that a radiation source conducts radiation at a target focus can be synchronized with the integral timeof the detector, and the focus trailing phenomenon is effectively inhibited.

Description

technical field [0001] The present application relates to the field of computed tomography, and in particular to a focus smearing correction device and method. Background technique [0002] Computed tomography (CT scanning) technology is a technology for three-dimensional imaging of the object to be detected. In a CT scanning system, an X-ray source and a detector are arranged opposite to each other. During the scanning process, the X-ray source and detector rotate around the object to be detected and remain relatively stationary. The X-ray source radiates X-rays, and the X-rays pass through the object to be detected and are received by the detector. The signal received by the detector is processed by using 3D reconstruction technology to obtain a 3D image of the object to be detected. [0003] Flying focus technology is to generate X-rays from two or more focal points and collect uninterrupted overlapping data of the detected object to obtain double or multiple sampling, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03A61B6/02
CPCA61B6/027A61B6/035A61B6/42A61B6/52
Inventor 李兵
Owner SHANGHAI UNITED IMAGING HEALTHCARE