CR/DR (Computed Radiography/Direct Radiography) comprehensive detection die body

A comprehensive detection and phantom technology, which is applied in medical science, radiation beam guiding devices, and instruments for radiological diagnosis, etc., can solve the problems of low detection efficiency, inconvenient carrying and use, low density resolution, etc., and achieve high detection efficiency , flexible and convenient to use

Active Publication Date: 2012-08-15
范杰
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AI Technical Summary

Problems solved by technology

[0003] 1. The detection efficiency is low, and CR/DR needs to be exposed for at least 4 times to complete the detection of spatial resolution, low-density resolution, consistency between radiation field and light field, and uniformity;
[0004] 2. Spatial resolution, low-density resolution, field-

Method used

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  • CR/DR (Computed Radiography/Direct Radiography) comprehensive detection die body
  • CR/DR (Computed Radiography/Direct Radiography) comprehensive detection die body
  • CR/DR (Computed Radiography/Direct Radiography) comprehensive detection die body

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Experimental program
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Embodiment Construction

[0020] figure 1 versus figure 2 The only difference is that the number of holes on the pure aluminum phantom as a low-contrast test card is different.

[0021] See figure 1 (There are 16 holes on the pure aluminum plate) This CR / DR comprehensive inspection phantom, a square pure aluminum plate 100 with a thickness of 20mm and a side length greater than 430mm is provided with a horizontal measurement scale and a longitudinal measurement along the two center lines of the square. Ruler: Three sets of image uniformity test points are set on the surface of the square pure aluminum plate 100, and each set of test points is composed of five identical box areas. Once imaging is achieved, the spatial resolution of the CR\DR system can be achieved, and the spatial resolution of the CR\DR system is low. Contrast resolution, uniformity, and field and light field consistency detection. The first group consists of the first box area 301 located at the midpoint of the square and the second, th...

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Abstract

The invention discloses a CR/DR (Computed Radiography/Direct Radiography) comprehensive detection die body and belongs to a die body for the detection of a medical X-ray photography system. Transverse and longitudinal measuring rulers and three groups of image uniformity test points are arranged on the surface of a square pure-aluminum plate with the thickness of 20mm and the side length of greater than 430mm. 16 or 19 holes with the same diameter and sequentially decreasing depth are arranged on the surface of the pure-aluminum plate so as to be used as a low-contrast test card. The CR/DR detection die body disclosed by the invention is integrated with a ray field and light field consistency test card, a low-contrast test card and image uniformity test points, has high detection efficiency and is easy to operate and convenient to use.

Description

Technical field [0001] The invention relates to a detection phantom of an X-ray imaging system, in particular a detection phantom of a medical X-ray imaging system that integrates spatial resolution, low-density resolution, uniformity of field and light field, and uniformity detection. Background technique [0002] At present, the CR / DR phantom used in the performance testing of medical computer X-ray photography system (CR system) and digital X-ray photography system (DR system) is composed of multiple sets of test cards. How many exposures are required for CR / DR testing? Performance indicators such as the low-density resolution, the consistency of the field and the light field, and the uniformity detection of the CR / DR system can be obtained once or even many times. The original CR / DR phantom mainly has the following problems: [0003] 1. The detection efficiency is low. CR / DR needs to be exposed for at least 4 times to complete the detection of spatial resolution, low-density r...

Claims

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Application Information

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IPC IPC(8): A61B6/03A61B6/08A61B6/00
Inventor 杨勇林滔李书琼
Owner 范杰
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