[Insight-users] DICOM orientation

[Bill Lorensen]

3D Slicer can read the DICOM directly. It will use the direction
information properly. Why are you reading and writing it? I am
suprised (and concerned) that 3D SLicer would flip the images.

Bill

On Mon, Oct 5, 2009 at 6:13 PM, John Drozd <john.drozd at gmail.com> wrote:
> Hello,
>
> I am reading a brain subject in the form of a DICOM series using ITK and
> writing it out from memory as a volume.
> I used the method shown in Examples/IO/DicomSeriesReadImageWrite2.cxx
> I viewed the original DICOM series in 3D Slicer, and also viewed the
> outputted volume in 3D Slicer.
> I am using 3D Slicer because I am developing a segmentation module for 3D
> Slicer using ITK.
> I noticed that the original DICOM series and the outputted volume are
> inverted in orientation, such that the original series is the radiologist
> view and the outputted volume is the neurosurgean view as per
> http://www.itk.org/pipermail/insight-users/2009-June/031128.html and
> http://www.itk.org/Wiki/Proposals:Orientation#DICOM_LPS_Differences_in_Visualization_presented_to_Radiologist_and_NeuroSurgeons
>
> Does this have something to do with what I read on the internet that vtk's
> images are flipped vertically from itk's images?
> Is there a way to manipulate the image in memory using ITK so that Slicer
> will display the outputted volume in the same radiologist orientation as the
> original DICOM series?
>
> Thank you.
>
> john
>
> --
> John Drozd
> Postdoctoral Fellow
> Imaging Research Laboratories
> Robarts Research Institute
> Room 1256
> 100 Perth Drive
> London, Ontario, Canada
> N6A 5K8
> (519) 661-2111 ext. 25306
>
> _____________________________________
> 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 ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.itk.org/mailman/listinfo/insight-users
>
>