[vtkusers] Image Orientation computation

[ABHISHEK GUPTA]

Thanks sercani, I'll try to do this.
On Thu, May 6, 2010 at 1:25 PM, sercani <sercanimailgroups at gmail.com> wrote:

> 06.05.2010 10:33, ABHISHEK GUPTA yazmış:
>
> Hi sercani,
>
> I am new to VTK and not using VTKImageViewer2.
>
> I am using classes VTKImageData, VTKImageTransform and VTKImageReslice.
>
> Any idea how can i do it using above classes.
>
> Thanks
> Abhishek
>
> Any idea how to
>
> On Thu, May 6, 2010 at 12:13 PM, sercani <sercanimailgroups at gmail.com>wrote:
>
>> 06.05.2010 08:12, Abhishek_Gupta yazmış:
>>
>> Am implementing the MPR functionality using VTK libraries and bit confused
>>> how to calculate the patient orientations in the sagital and coronal view
>>> when the DICOM image was in Axial view. I was able to display the
>>> orientations from the DICOM file using the formulas provided in the
>>> http://www.dclunie.com/medical-image-faq/html/part2.html site by Mr.
>>> Clunie.
>>> Using this i get the orientation of the image of that particular DICOM
>>> image
>>> but how should i calculate the orientations for the other views except
>>> the
>>> one present in the DICOM file when reconstructed using the VTK.
>>>
>>>
>> Hi Abhistek;
>> If you are using vtkImageViewer2 for MPR rendering you can find their
>> orientations like this:
>>
>> First find all axial (XY plane) orientations for left, top, right ,
>> bottom, front and back sides of vtkImageViewer2 and insert them into an
>> array or stringlist etc. and do these calculations for other views:
>>
>> enum tagSCREEN
>> {
>> LEFT=0,
>> TOP,
>> RIGHT,
>> BOTTOM,
>> FRONT,
>> BACK
>> }ESCREEN;
>>
>> //Sagittal
>> StringList getOrientationAnnotationForYZPlane()
>> {
>> StringList xy=getOrientationAnnotationForXYPlane();//axial orientations
>>
>> StringList list;
>> list.insert(LEFT,xy.at(TOP));
>> list.insert(TOP,xy.at(BACK));
>> list.insert(RIGHT,xy.at(BOTTOM));
>> list.insert(BOTTOM,xy.at(FRONT));
>> list.insert(FRONT,xy.at(LEFT));
>> list.insert(BACK,xy.at(RIGHT));
>> return list;
>> }
>> //Coronal
>> StringList getOrientationAnnotationForXZPlane()
>> {
>> StringList xy=getOrientationAnnotationForXYPlane();//axial orientations
>>
>> StringList list;
>> list.insert(LEFT,xy.at(LEFT));
>> list.insert(TOP,xy.at(BACK));
>> list.insert(RIGHT,xy.at(RIGHT));
>> list.insert(BOTTOM,xy.at(FRONT));
>> list.insert(FRONT,xy.at(TOP));
>> list.insert(BACK,xy.at(BOTTOM));
>> return list;
>> }
>>
>> Sercani....
>>
>>
> Just create an instance of vtkImageViewer2 and set its renderwindow and
> interactors, then set the viewer->SetSliceOrientation(int orientation);
> according to your mpr rendering...for axial rendering orientation should be
> 2, sagittal=0, coronal =1;
>
> But of course if you have already implement the mpr rendering using
> vtkImageTransform and vtkImageReslice you can set the stringlists according
> to your transforms...The ones that i send are for vtkImageViewer2's
> transforms, you can just control the values if they are true, if not you can
> modify them for your transforms.The ones that i send were only examples for
> giving the logic of orientation...
>
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