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The problems with X-ray CT reconstruction
In recent years X-ray CT has made remarkable progress, and it is active in non-destructive inspection mainly in various fields. The advantage of CT (Computed tomography) is that it is possible to visually observe details of invisible parts using CG (computer graphics) technology and others. Before X-ray CT was developed, it was done by observing X-ray roentgenographs. In the early days since the introduction of X-ray CT, two-dimensional slice images were mainly used, however with the development of three-dimensional CG technology detailed three-dimensional shape representation became possible. Today, we have reached the point of playing a leading role as a convenient non-destructive inspection method which allows visual observation of parts that can not be seen without breaking the real thing.
However, from the point of using X-ray CT, there are many problems caused by their characteristics. There are a problems called artifacts to give a representative example. The image below is a representative example of artifacts.
The above image is from the left, ring artifact, vertical artifact, metal artifact, cupping artifact (beam hardening, cupping effect). These artifacts are the noise that reflects shapes that do not actually exist.
There are also visual problems other than artifacts arising from the structural state and motion of the X-ray CT device. The image below is a typical example.
From the left image above, the problem image due to stage rotation error and X-ray focal movement, the problem image due to the rotation axis and the center and orientation of the camera (flat panel detector).
These problems have been serious troubles for many CT users in many years.
On the “Problems cases with X-ray CT scan” page, we will explain these solutions while taking these problems by case.
Our CT reconstruction software: TomoShop® series contributes to your research and development business by providing solutions to these X-ray CT problems.
Read more ☞ “Problem cases with X-ray CT scan” page
☞ Go to TomoShop® Video Page
June 9, 2017
By using the range specified by 3D data, defect detection is conducted only in the partial area where is specified.
Reduction of the stronger ring artifacts, the ring artifact that is not the center of the image…
Ultra-fast reconstruction function with multi-FPU is available now.
Multi-detectior row CT scan functions are available now.
New CT reconstruction software for helical CT is released