Hi Jesse, Have you tried importing the data with MITK? Since you used other software it is difficult for us to help you identify the source of the differences. If you doubt the correctness I would suggest comparing them with the information in the dicom header.
Best Regards, Thomas ------------------------------------------------------ Thomas van Bruggen, MSc. German Cancer Research Center (DKFZ) Div. Medical & Biological Informatics Im Neuenheimer Feld 280 D-69120 Heidelberg t +49 (0) 6221 / 42-2370 e [email protected] ________________________________________ Van: Jesse Ross-Jones [[email protected]] Verzonden: vrijdag 12 april 2013 11:04 Aan: mitk-users CC: Fernando García Onderwerp: [mitk-users] Fwd: DWI Gradient Values Dear MITK Users, I am converting DICOM data from a Siemens Espree 1.5T machine for Fiber Tracking. Looking at the converted files I see that there is a difference between the raw gradients and the gradients once converted. I am interested to know where these differences come from. What pre processing steps are performed on the data during conversion? I have included the gradient values I have obtained from various software here as reference. I have also summarized my findings below. Your help in helping me to identify the source of these differences is much appreciated!! Best Regards Jesse 1. Raw Info of gradient File: RawDicomGradient.txt (The gradients are not sort as the output of other tools) 0.000000 0.000000 0.000000 0.999977 0.006051 0.003027 -0.000006 -0.999982 0.006006 -0.024989 -0.653018 -0.756930 0.588672 0.769595 -0.247364 1. MRTrix (dcm2mif) left->right\posterior->anterior\inferior->superior File:MRtrix.mif dw_scheme: 0,0,0,0 dw_scheme: -0.999977,-0.00605102,0.00302703,1000 dw_scheme: 6.01e-006,0.999982,0.00600569,1000 dw_scheme: 0.0249894,0.653018,-0.75693,1000 dw_scheme: -0.588672,-0.769595,-0.247363,1000 2. 3DSlicer (dcm2nrrd) left-posterior-superior File:3DSlicer.dwi DWMRI_gradient_0000:=0 0 0 DWMRI_gradient_0001:=-0.999977 -0.00605102 -0.00302703 DWMRI_gradient_0002:=-6.01148e-006 -0.999982 0.00600569 DWMRI_gradient_0003:=-0.0249893 -0.653018 -0.75693 DWMRI_gradient_0004:=-0.588672 -0.769595 0.247363 3. MRCron (dcm2nii) File:MRCron.txt dw_scheme:0.000000 0.000000 0.000000 dw_scheme:0.999659 -0.004982 -0.025617 dw_scheme:-0.008158 0.962864 -0.269862 dw_scheme:-0.052384 0.418964 -0.906491 dw_scheme:0.587632 -0.807968 -0.043309 1. MRIConverter (dcm2nii) File:MRIConverter.txt dw_scheme:0.000000 0.000000 0.000000 dw_scheme:0.999660 -0.004982 -0.025588 dw_scheme:-0.008132 0.962882 -0.269799 dw_scheme:-0.052352 0.419028 -0.906463 dw_scheme:0.587622 -0.807974 -0.043334 ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr _______________________________________________ mitk-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mitk-users
