This appears to be an issue with the resample pipeline modes. The option indicated in the attached screenshot gives the correct rendering. Other modes for resampling may not give the same patient space display. We'd need to investigate to see if this is a fundamental limitation or something to be fixed at the reslice level.

Thanks Steve. I wonder if this fixes the fiducials visualization problem of the parent bug. I don't even know what these different modes mean, and why they are exposed. I am sure there is history behind this that I do not know, but looks super complicated for a functionality exposed at such high level to the user.

Yes, there's a long story - Ron and Alex worked out what modes were desirable and what the default should be. Alex implemented the corresponding changes to the reslice pipeline. I suspect things could be simplified and reworked for consistency.

Regarding the fiducials, I doubt this is the same issue. The reslicing modes shown in the scrrenshot have to do with how the slice views are mapped to a textures for display as slice planes (that is textrured plans forming slice models in threeD views). All of this could stand to be revamped, but I believe it does not come into play with respect to the fiducials in slice views.

Someone else discovered this and pointed to me - if one uses GPU volume rendering, the label is rendered correctly with the volume slice going through the middle. There is apparently a difference between CPU and GPU.

It sounds like this should be filed as a VTK bug then.

Following investigation by the VTK rendering team. The issue is reproducible within VTK proper using OpenGL mapper and has been fixed within OpenGL2 mapper. See:

OpenGL: PlaneThroughVolume_OpenGL_v1.PNG

OpenGL2: PlaneThroughVolume_OpenGL_v2.PNG

Great news!

Confirmed working in recent nightly.