[Rtk-users] MV-CBCT

[fateme shahedi]

 Dear RTK users and developersI 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=100cmI used the rtkfdk as bellow;[sn at localhost workspace]$ rtkelektasynergygeometry --image_db MyIMAGE1.DBF --frame_db MyFRAME1.DBF --dicom_uid 1 -oelektaGeometry[sn at 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.
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