[Rtk-users] Reconstructing DICOM data

[Simon Rit]

Hi,
Your projections in Ankle.mha display a very large value in air. To start
with, I would make sure that everything outside the leg is at about 0 in
your original Ankle CT data.
Note that projecting and reconstructing a CT image will necessarily result
in a loss of quality due to the multiple interpolations (during projection
and backprojection). I would suggest to use fine pixels in the projections
(e.g. --spacing .25) which you can bin during reconstruction (--binning
4,4).
Simon

On Mon, Sep 19, 2022 at 6:06 PM Sreejith P P <sreejithputhettu at gmail.com>
wrote:

> Hi,
>
> I have created projections from 'Ankle' CT data using RTK (cuda projection
> filter). It looks good to me.
> After that, I tried rtkfdk application to reconstruct it.
> I used the following command and got the attached output.
>
> *rtkfdk -g geometry.xml -o Output.mha -p . -r Ankle.mha --dimension
> 512,512,245 --hardware cuda --pad 1.0 --hann 0.4 --hannY 0.4*
>
> Am I doing it correctly? If yes, I would like to know what I can do to
> improve the result.
>
>  Ankle.mha
> <https://drive.google.com/file/d/10ybESn9HoU9_LYDgaLUNYIf2BzTarQij/view?usp=drive_web>
>  geometry.xml
> <https://drive.google.com/file/d/1cTlvPld3iRNiRUW8HmnF29i_j6AmzaPW/view?usp=drive_web>
>  Output.mha
> <https://drive.google.com/file/d/1iI9V9TUIAKUMyfe-w6TTzFzS0DzvaGyn/view?usp=drive_web>
>
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