Hi all - I am trying to load a cine-MRI (link to data is below). I was able to import it through the DICOM import, but the results look off.
Furthermore, when I go to “volume rendering,” there is no volume generated, but when I go to the “volume” module, it shows a volume is present.
Also, I am not able to use the segment editor module for some reason. It is not reading the correct pixel values. I attached a screenshot of an attempt to use thresholding in the “Segment Editor” module, but the results do not make sense. The parts that it thresholds appear to be random.
Any help would be appreciated - thanks in advance.
The DICOM dataset loaded as a MultiVolume node (4d dataset), which means you cannot use Slicer functionality that work with 3d data.
You can extract individual temporal frames from the miltivolume, and apply those operations. You can also check “Enable copying” which will give you a 3d volume with a copy of the currently selected frame. You can then use Volume rendering to render that frame, and if you toggle “Play” you will see Volume rendering of the temporal changes (as shown in this movie: https://www.slicer.org/w/images/0/04/BeatingHeart.mov).
In recent nightly builds, you can load 4D image as volume Sequence (if you install Sequences extension). Sequence browser module provides a 3D proxy node that you can use for segmentation, volume rendering, etc. You can create a corresponding sequence node for 4D segmentation; or segment a single 3D volume and use Sequence Registration extension to automatically extend it to all other time points.
Is there any information available such as the patient’s age? Furthermore, are there any good databases that 3D Slicer has access to that features patients with different cardiomyopathies?
I have the same question. When I open shortaxis Cardiac MR Image, I can just see an image like what Aginn share here.
Can I open these image through sequence? How can I do that?
I think the problem is that slicer show DIOCOM image in sagital/coronal/axial coordinates but I need a shortaxis/longaxis coordinate.
I can open my cardiac shortaxis images through “brain strip rotation” module. That’s a module that rotate images and fit them in sagital/coronal/axial coordinate.
You need to toggle “Enable copying” in MultiVolumeExplorer (red arrow), and then select the frame copy (yellow arrow) as “Volume” in the Volume Rendering module.
Thank you. I think maybe there is something wrong with my data. I try out this way using a CT data and it turns out quite successfully. But the cine-MR just cannot come out a volume, I check these data, their 'content time ’ are not the same, is that a problem?
Hi Andras, could you explain a bit more on how to use Sequence Registration extension to extend the 3D segmentation to the entire sequence？I have loaded my 4D .nii file and I have the segmentation for the 1st and 15th frames, but how should I automatically generate segmentation for the rest frames? Thank you.
