Dear Faterme, I don't know anyone who has done that before. I did not even know that the same database format was used for MV images. Looking at the file you've sent, the MyFRAME1.DBF has only zeros in the U_CENTRE and V_CENTRE columns which suggests that the system is not calibrated. This is consistent with the problem you describe, which indicates a geometry problem. Good luck, Simon
On Sun, Jul 16, 2017 at 11:11 AM, fateme shahedi via Rtk-users < rtk-users@public.kitware.com> wrote: > Dear RTK users and developers > I am new to RTK. I have some trouble getting a proper reconstruction. I > want to use EPID mounted on Elekta linear accelerator to get MV-CBCT > images. I have 120 projection images (in his format) scanned over (0-357) > degree of the phantom. The phantom is containing 5 rods of different > materials (titanium, aluminum, acrylic, air and polyethylene). The > measurement geometry is as bellow; > - detector size= 1024*1024 pixels > - size of each pixel=0.4mm > -size of each pixel at the isocenter=0.25mm > -source-to-detector distance=157cm > -source-to-isocenter distance=100cm > I used the rtkfdk as bellow; > [sn@localhost workspace]$ rtkelektasynergygeometry --image_db > MyIMAGE1.DBF --frame_db MyFRAME1.DBF --dicom_uid 1 -o > elektaGeometry > [sn@localhost workspace]$ rtkfdk --lowmem --geometry elektaGeometry > --path img_1/ --regexp '.*.his' --output slice50.0.mha --verbose > --spacing 0.25,0.25,0.25 --dimension 1024,1,1024 --origin > -127.875,50,-127.875. > I display .mha images with VV , it just show the central rod (air) and > doesn't show the others ( although the projections are megavoltage, I get > result from some other open-source software for CBCT). I attached the > geometry file (frame and image.DBF) with the mail. I need your help > to know what went wrong. > I really appreciate any help you can provide. > > best regards. > fateme. > > _______________________________________________ > Rtk-users mailing list > Rtk-users@public.kitware.com > http://public.kitware.com/mailman/listinfo/rtk-users > >
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