Radiation imaging system

A technology of radiographic imaging and radiographic images, which is applied to imaging devices, stereoscopic imaging, and instruments for radiological diagnosis. It can solve the problems of inability to obtain contrast, decrease in the accuracy of phase differential images, and inability to obtain phase contrast images. The effect of phase contrast images
CN102740775AInactive Publication Date: 2012-10-17FUJIFILM CORP
7 Cites 33 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIFILM CORP
Publication Date
2012-10-17
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

An X-ray imaging system is provided with an X-ray source (11), first and second absorption gratings (31, 32), and a flat panel detector (FPD) (30), and obtains a phase contrast image of an object H by performing imaging while moving the second absorption grating (32) in x direction relative to the first absorption grating (31). The following mathematical expression is satisfied where p1' denotes a period of a first pattern image at a position of the second absorption grating (32), and p2' denotes a substantial grating pitch of the second absorption grating (32), and DX denotes a dimension, in the x-direction, of an X-ray imaging area of each pixel of the FPD (30). Here, "n" denotes a positive integer. DX is not equal to n x (p1' x p2') / |p1' - p2'|
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a radiation imaging system for capturing images of a subject using radiation such as X-rays, and more particularly to a radiation imaging system for performing phase imaging of a subject. Background technique

[0002] Since X-rays are attenuated according to the number of atoms of the elements constituting the substance and the density and thickness of the substance, X-rays are used as probes to examine the inside of the object. X-ray imaging is widely used in medical diagnosis and non-destructive inspection.

[0003] In a general X-ray imaging system, an object is placed between an X-ray source for emitting X-rays and an X-ray image detector for detecting X-rays to capture an X-ray transmission image of the object. Each X-ray emitted from the X-ray source to the X-ray image detector is attenuated (absorbed) by a certain amount, which depends on the properties of the objects present on the X-ray path to the X-ray image...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More