Hello XCIST team,
First of all, thank you very much for your previous help regarding metal artifact simulation. Your guidance has been very helpful for my research.I would like to ask about a new issue that I have not been able to resolve.
In your published paper, I noticed that even in the ideal artifact-free image, there seem to be some faint dark stripe artifacts.
To investigate this, I built my own Fe+water phantom and performed simulations under strictly ideal conditions, with major non-ideal effects disabled as much as possible, including:
no noise
no beam hardening
no scatter
no view aliasing
However, the reconstructed image still shows similar faint dark stripe artifacts.
My goal is to generate a completely artifact-free ideal image of the Fe+water phantom, which I would like to use as the gold standard for later metal artifact reduction research.At the moment, I suspect that the residual dark stripes may be related to one of the following:
phantom modeling logic
numerical precision or discretization
reconstruction settings
some physical/modeling assumptions in the XCIST simulation pipeline that I may have overlooked
I would greatly appreciate your advice on the following questions:
Are such faint dark stripe artifacts expected even under ideal XCIST simulation conditions?
What is the most likely source of these artifacts?
Is there a recommended way to further reduce or eliminate them in order to obtain a truly artifact-free reference image?
Thank you very much for your time and help.
Hello XCIST team,
First of all, thank you very much for your previous help regarding metal artifact simulation. Your guidance has been very helpful for my research.I would like to ask about a new issue that I have not been able to resolve.
In your published paper, I noticed that even in the ideal artifact-free image, there seem to be some faint dark stripe artifacts.
To investigate this, I built my own Fe+water phantom and performed simulations under strictly ideal conditions, with major non-ideal effects disabled as much as possible, including:
no noise
no beam hardening
no scatter
no view aliasing
However, the reconstructed image still shows similar faint dark stripe artifacts.
My goal is to generate a completely artifact-free ideal image of the Fe+water phantom, which I would like to use as the gold standard for later metal artifact reduction research.At the moment, I suspect that the residual dark stripes may be related to one of the following:
phantom modeling logic
numerical precision or discretization
reconstruction settings
some physical/modeling assumptions in the XCIST simulation pipeline that I may have overlooked
I would greatly appreciate your advice on the following questions:
Are such faint dark stripe artifacts expected even under ideal XCIST simulation conditions?
What is the most likely source of these artifacts?
Is there a recommended way to further reduce or eliminate them in order to obtain a truly artifact-free reference image?
Thank you very much for your time and help.