Method and device for measuring levelness of medical imaging equipment, medical imaging equipment and mold body

A technology of medical imaging and levelness, applied in the field of medical imaging, can solve the problems of accuracy limitation and indirect measurement method, and achieve the effect of reducing dose, improving accuracy and quantification

Pending Publication Date: 2021-06-04
SIEMENS SHANGHAI MEDICAL EQUIP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this measurement method is not direct and has precision limitations

Method used

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  • Method and device for measuring levelness of medical imaging equipment, medical imaging equipment and mold body
  • Method and device for measuring levelness of medical imaging equipment, medical imaging equipment and mold body
  • Method and device for measuring levelness of medical imaging equipment, medical imaging equipment and mold body

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Embodiment Construction

[0040] In order to make the purpose, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.

[0041] figure 1 is a schematic diagram of a phantom 100 according to an embodiment of the present invention. The mold body 100 includes a cylindrical body 102 , two end caps 108 , and an opening 104 . The cylindrical body 102 is made of plastic, in this embodiment polymethyl methacrylate. The length of the cylindrical body 102 in the longitudinal direction is larger than the scanning area to eliminate the influence of the end. Two end caps 108 are fixed on both ends of the cylindrical body 102 and form a cylindrical accommodation space with the cylindrical body 102 . The cylindrical accommodation space and the cylindrical body 102 have the same rotation axis 106 . End cap 108 may also be made of plastic such as polymethyl methacrylate. The opening 104 is located on the end cap 108 an...

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Abstract

The invention discloses a method and device for measuring the levelness of medical imaging equipment, the medical imaging equipment and a mold body. The method for measuring the levelness of the medical imaging equipment comprises the following steps: generating a cross-sectional image of the mold body in a vertical plane, wherein the mold body is provided with a liquid plane and air above the liquid plane inside; For each horizontal position on the cross-sectional image, calculating a mean value of the cross-sectional images corresponding to the air and the liquid in the vertical directions of the cross-sectional images; calculating midpoint values of the air and the liquid along the vertical directions of the cross-sectional images; calculating corresponding vertical positions of the midpoint values on the cross-sectional images; and fitting a line formed by points formed by horizontal positions and corresponding vertical positions of the horizontal positions with a straight line, and calculating the levelness of the straight line. The method and the device can be used for measuring the levelness of a system and accurately calibrating the levelness of the system. The images are not influenced by factors such as system assembly and ground, and a direction ray beam chain is directly calibrated.

Description

technical field [0001] The present invention relates to medical imaging. Background technique [0002] Calibration of large medical imaging equipment is a critical step for accurate imaging, which also brings benefits to clinical evaluation. In routine inspections or factory one-off calibrations, phantoms are generally used as test objects for image calibration. [0003] The levelness of parts can be measured with common tools such as spirit levels. But this method of measurement is indirect and has precision limitations. Contents of the invention [0004] In view of this, the present invention proposes a method, device, medical imaging equipment and phantom for measuring the levelness of medical imaging equipment. [0005] According to a first aspect of the present invention, there is provided a method for measuring the levelness of medical imaging equipment, comprising: generating a tomographic image of a phantom in a vertical plane, the phantom having a liquid plane ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/583
Inventor 李涛涛滕长青约翰·帕夫拉克
Owner SIEMENS SHANGHAI MEDICAL EQUIP LTD
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