Hi, 1. Yes, simply change the dimension and origin to make it 3D, for example to --dimension 1024 --origin -127.875 which will set the same values for the three dimensions. 2. No, you need more than 2 projection to reconstruct a 3D image. I think you need to read some books on tomography to understand this. 3. There are a few datasets on the RTK wiki. You can find some datasets for lungs and liver here <https://image-x.sydney.edu.au/spare-challenge/>. Best regards, Simon
On Fri, May 21, 2021 at 6:46 AM gwoodstccd via Rtk-users < [email protected]> wrote: > Hello all, > > I'm one newbie for ITK/RTK. I have some programming experience, but for > image processing is totally new for me. > > I have 3 basic questions: > > 1. when I run example for reconstructing Elekta CBCT sequence from > https://wiki.openrtk.org/index.php/RTK/Examples/ElektaReconstruction. > > . Reconstruct elekta-data using RTK applications such as rtkfdk algorithm. > In this case, we reconstruct just one axial slice (29.5) of the whole > volume: > > rtkfdk \ > --lowmem \ > --geometry elektaGeometry \ > --path img_1.3.46.423632.135428.1351013645.166/ \ > --regexp '.*.his' \ > --output slice29.5.mha \ > --verbose \ > --spacing 0.25,0.25,0.25 \ > --dimension 1024,1,1024 \ > --origin -127.875,29.5,-127.875 > > > In this step, only one axial slice is reconstructed to *.mha file. My > question is that can I reconstruct all slices as one 3D image file? > > 2. I have two kV-kV images, they are orthogonal. Can I use RTK to > reconstruct 3D image? If yes, one guideline or example is welcome. > > 3. Could someone please share me some free test dataset for radiotherapy > CBCT IGRT purpose including PlanCT and CBCT sequence? I want to use these > data for reconstruction and registration with ITK and RTK? > > Much appreciated for responses. > > George Woods > > Sent with ProtonMail <https://protonmail.com> Secure Email. > > > _______________________________________________ > Rtk-users mailing list > [email protected] > https://public.kitware.com/mailman/listinfo/rtk-users >
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