Timothy, If you try saving out a vti file, is everything working correctly? Seems to me the Nifti/Analyze writers are not respecting the spacing that vtkImageData is providing. I wonder if the writer was hard coded to use the meta-data provided by Nifti/Analyze readers to determine the spacing and hence could work if you opened and good Nifti file and then saved it out.
Utkarsh On Wed, Sep 18, 2013 at 3:57 PM, Timothy Brown <[email protected]> wrote: > Hi ParaView users, > > I am converting vti data (MRI) to NifTI and am experiencing an error. I > have attached an image that > illustrates the geometry, as well as what I think may be the issue. > > The voxels in the MRI were not isotropic. The top row of the image shows > the head, the proportions > of which appear correct, as well as some of the Data Arrays information. > Note vtkVolumeSpacing > 0.9375, 2 - this matches the MRI acquisition. > > Using ParaView 4.0.1 (version included in graphic) I save data as NifTI. I > then loaded the NifTI, and > as you can see, colored pink on second row, it is compressed along one axis. > Note vtkVolumeSpacing > 1, 1 - I think this could be source of error. > > I also attempted to save to Analyze format with similar result. > > I'd appreciate any help/feedback, > > Many thanks, > -Timothy > > > Timothy Brown email: [email protected] > Computational Anatomist phone: 410.516.7551 > Center for Imaging Science fax: 410.516.4557 > Johns Hopkins University > 301 Clark Hall > 3400 N. Charles Street > Baltimore, MD 21218 > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview > _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
