Dear rtk-users I am now working on iterative reconstruction offset detector CBCT using my elekta data.
However, probably because the data is truncated , the ring artifact appears in the iterative reconstruction. One of the reasons was that flat field correction was not performed. Is flat field correction possible with RTK? I don't have an image for flat field correction, so are you predicting it? Or do I have to have a flat field correction image? Thank you very much in advance masa@japan [image: recon.jpg]
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