Hi, It's hard to help without having a look at your dcm files. From the screenshot, it seems that your projections are very small, I would check the pixel size of them and whether they are centered. Simon
On Fri, Nov 26, 2021 at 9:44 AM Attila Nagy <[email protected]> wrote: > Hi, > > I have 20 projections of a target and I would like to understand what can > I do wrong because my result is bad. > > So, here are the parameters of the system: > > - > > SID: 83.9 cm > - > > SDD: 131.0 cm > - > > SourceOffsetY: 1.42 cm > - > > SourceOffsetX: 1.42 cm > - > > DetectorOffsetY: -1.07 cm > - > > DetectorOffsetX: -1.07 cm > - > > Gantry Angle: depends on the particular projection. > > > The detector is a Mercu1717V. Pixel matrix is 3072x3072, the detector > effective area is: 427.008×427.008mm > > I ran these commands: > rtksimulatedgeometry.exe -o geometry.xml -f 0 -n 20 --sdd 1310 --sid=839 > --proj_iso_x=0 --proj_iso_y=0 --source_x=0 --source_y=0 > rtkfdk -g geometry.xml -p ./dcm -r .*.dcm -o fdk.mha --hann 0.5 --pad 1.0 > --verbose > > and the result is: > https://gyazo.com/1aec04c1be241e39c483e208ded2bc86 > > The proj_iso_* and source_* parameters are 0 because I got an error with > the values above. > > I'm new in the RTK and CBCT world so I have to learn a lot of these things. > > Thank you for any help! > > Regards, > Attila Nagy > Spinotron Magyar Sugársebészeti Innováció Kft. - http://www.spinotron.hu/ > _______________________________________________ > Rtk-users mailing list > [email protected] > https://public.kitware.com/mailman/listinfo/rtk-users >
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