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Off-focal radiation measurement method and apparatus, computer equipment, and readable storage medium

A technology of radiation measurement and equipment, applied in the medical field, can solve the problems of measurement accuracy and low signal-to-noise ratio of defocused radiation distribution

Active Publication Date: 2020-10-20
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present application provides a defocused radiation distribution measurement method, device, computer equipment and readable storage medium to at least solve the problem of low measurement accuracy and signal-to-noise ratio of defocused radiation distribution in the related art

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  • Off-focal radiation measurement method and apparatus, computer equipment, and readable storage medium
  • Off-focal radiation measurement method and apparatus, computer equipment, and readable storage medium

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Embodiment Construction

[0049] In order to make the purpose, technical solutions and advantages of the application clearer, the application will be described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. Based on the embodiments provided in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0050]Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. In addition, it can also be understood that although such development efforts may be complex and lengthy, for those of ordinary skill in the art rel...

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Abstract

The application relates to an off-focal radiation measurement method and apparatus, computer equipment, and a readable storage medium. The off-focal radiation measurement method comprises the following steps: a phantom is arranged on a scanning bed, the phantom is provided with a slit, and the slit of the phantom and the radial axis of a scanning cavity are set at a preset angle; the scanning bedor a machine frame is controlled to move relative to the axial direction; during the movement, a X-ray tube is controlled to scan the phantom, and a radiation signal received by a detector is obtained; and the off-focal radiation distribution of a detector channel is obtained according to the radiation signal. According to the above measurement method, the phantom is driven to move through the scanning bed, the phantom is exposed and scanned at multiple bed code positions, the requirement for the placement of the phantom is low, and the measurement accuracy and measurement range can be adjusted by adjusting a position of the phantom. In addition, the measurement method improves the signal-to-noise ratio and measurement accuracy of off-focal radiation measurement.

Description

technical field [0001] The present application relates to the field of medical technology, in particular to a defocused radiation measurement method, device, computer equipment and readable storage medium. Background technique [0002] CT scanning equipment is a device that uses computer technology to scan the measured object to obtain a two-dimensional projection image and then reconstruct it to obtain a three-dimensional tomographic image. CT scanning equipment uses an X-ray tube to emit X-rays, which pass through objects (such as human organs) and are received by detectors. Most of the output signal of the detector comes from the X-tube electrons bombarding the focus on the target surface to generate X-rays, but some electrons will scatter from the target surface to outside the focus, and then bombard other areas of the target surface to generate X-rays and then reach the detector , which is the off-focus radiation (Off focal), so the X-ray source appears as a low-intens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03A61B6/00
CPCA61B6/583A61B6/483A61B6/40A61B6/035
Inventor 胡仁芳
Owner SHANGHAI UNITED IMAGING HEALTHCARE