CT (Computerized Tomography) image metal track prediction and artifact reduction method based on integral cosine
A technology of metal traces and CT images, applied in the research and implementation of artifact removal methods, can solve problems such as slow speed, achieve good results and save time
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[0055] 1) According to the tomographic scanning of a certain part of the human body by the CT machine, a piece of original scanning data is obtained, which is called the original sinogram S (such as image 3 It is an original sinogram of 855*984, with a total of 984 scanning angles and 855 detector channels), the value of the pixel in S is the attenuation degree of X-rays by the human tissue that the X-rays pass through in a certain scanning angle of the human slice , referred to as CT value, the unit is Hu.
[0056] 2) Input the sinogram S; according to the cosine projection relationship between the projection data between the sinogram and the tomographic image of the human body, the following cosine projection formula is defined:
[0057] Sino ( i ) = Num Channel 2 - Ratio * len * Cos ( ...
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