[Rtk-users] some bugs in SART when running Reconstruction of Elekta Data

[Guangming Zang]

Hi,
i ran the Reconstruction of Elekta Data example in wiki
 (http://wiki.openrtk.org/index.php/RTK/Examples/ElektaReconstruction)
when i use fdk to reconstruct the data, it work very well(can see the
slice). When ran the SART algorithm, however,i got the result with same
size of fdk algorithm's , but nothing can been seen in the slice.
Here is the command i used:
fdk:
 rtkfdk --geometry elektaGeometry  --path
img_1.3.46.423632.135428.1351013645.166/ --regexp .*.his  --output
slice29.5.mha  --spacing 0.25,0.25,0.25 --dimension 1024,1,1024 --origin
-127.875,29.5,-127.875

SART(with different -f -b):
 rtksart --geometry elektaGeometry  --path
img_1.3.46.423632.135428.1351013645.166/ --regexp .*.his  --output
slice29.6.mha  --spacing 0.25,0.25,0.25 --dimension 1024,1,1024 --origin
-127.875,29.5,-127.875

rtksart  -g elektaGeometry -f CudaRayCast  -b CudaVoxelBased   -t 1 -p
img_1.3.46.423632.135428.1351013645.166/ -r  .*.his -o slice_cuda.mha
--spacing 0.25,0.25,0.25  --dimension 1024,1,1024 --origin
-127.875,29.5,-127.875

rtksart  -g elektaGeometry -f Joseph -b NormalizedJoseph   -t 1 -p
img_1.3.46.423632.135428.1351013645.166/ -r  .*.his -o slice.mha --spacing
0.25,0.25,0.25  --dimension 1024,1,1024 --origin -127.875,29.5,-127.875
the results are the same, can not see anything.

Can you help me to figure it out or give me some suggestions?
Thanks for your time.

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