[Rtk-users] CBCT Reconstruction problem

[Chao Wu]

Hi Chole,

--proj_iso_x and  --proj_iso_y use the same unit as in other geometrical
parameters, so in your case those should be in mm not in pixels.

Regards,
Chao

2018-04-26 15:30 GMT+02:00 dagetuo <1874415034 at qq.com>:

> Dear RTK-users,
>
> I have been trying to run the rtkfdk code for CBCT reconstruction but the
> result was not quite right.
> I have attached a drawing of my setup and projections could be downloaded
> from:
> https://drive.google.com/drive/folders/1J0am5Hw67O8b5dmKNlEno4MOnbBZv
> sM0?usp=sharing
>
> Description of our CBCT setup:
> 1. The distance from Source to Isocenter is 602.00mm
> 2. The distance from Isocenter to Imaging Surface of the Detector is
> 403.84mm
> 3. Detector physical size: 434mm*434mm
> 4. Image Resolution: 2816*2816
> 5. angle step = 1 degree, angular covered is 205 degrees.
>
> The original size of projections was 2816*2816 and I resized them to
> (256,256) for faster calculation.
>
> This is how I performed my reconstruction:
> ( rtksimulatedgeometry -n 205 -o I:\RTK140_build_git_for_test\bin\Debug\geo.xml
> --sdd=1005.84 --sid=602.0 --proj_iso_y=-128.0 --proj_iso_x=-128.0
> --arc=205.0
>
> rtkfdk --verbose 1 --path=I:\RTK140_build_git_for_test\bin\Debug\timo1
> --regexp=DCM$ -o I:\RTK140_build_git_for_test\bin\Debug\test3.mha
> --hardware="cuda" -g I:\RTK140_build_git_for_test\bin\Debug\geo.xml
> --hann 1.0 --dimension 256,256,256
> )
>
> Could you please tell me if I am setting the geometry correctly?
>
> Thank you in advance.
>
> Chole
>
>
>
>
>
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