[Rtk-users] rtkadmmwavelets ring artifact

[Simon Rit]

Hi,
Could you provide a snapshot?
Cyril, the developer of this method, is away for a few days but he'll
be able to answer next weeks.
Cheers,
Simon

On Fri, Mar 13, 2015 at 7:49 PM, Joel Beaudry <joelbeaudry at gmail.com> wrote:
> Hi RTK users/developers,
>
> I've been using RTK for CBCT reconstructions and found it to be very useful,
> so thanks for all the work done on it!
>
> As for my question,when I use rtkadmmwavelets I get a ring artifact in the
> center of the image. I'm using it for 4DCBCT reconstructions, so I'm not
> using the full number of projections and not sure if this is a contributing
> factor. From reading previous posts I know that the entire object must be in
> the reconstruction, and so I have included both the patient and couch in the
> reconstruction volume but still get the ring artifact. Has anyone else
> encountered this? Any ideas/suggestions?
>
> Cheers,
> Joel
>
> PS. When trying rtkadmmtotalvariation I don't encounter such issues.
>
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