Duplicate data in MRML tree

[torquil]

Hi!

After loading a CT DICOM file, then saving the data, closing the scene, and then opening the data again, I seem to end up with duplicate data in the MRML tree, similar to what is described here:

Slicer save function creating copies of dataset instead of overwrite

Hi, I am not sure if this is how it is supposed to work. But when i load the data folder i saved previously, slicer creates copies of all files and assigns them a suffix like ‘_1’ . If I were to save the data again after updating a few segmentations for example, everything gets saved along with suffixed duplicates, hence doubling storage and creating confusion, unless i manually unselect the suffixed duplicates. Screenshot showing contents of folder loaded into slicer, there are no duplicates …

The response to that question recommended to use “Close scene”, but this is something I always do, so that is not the solution in this case. In addition, I often get several “Default Scene Camera” items in the Data module.

Below is an example where I’m ending up with two copies of a volume initially called L_PreOp. The reason I’m asking about this is that when I worked on registration between two CTs, then saving data and loading data, I end up with duplicate data where half of the items have names with the suffix _1, as described in the link above.

Here are some screenshots of the process, showing the Data module between each step:

After Slicer startup:

After loading the DICOM file:

After saving the data:

After File → Close scene:

Adding the data that was saved:

After adding the data:

The nodes tab:

I’m using the latest Slicer 3d nightly build on Linux.

Best regards,
Torquil Sørensen

[lassoan (Andras Lasso)]

You add one instance of the volume by loading the scene (mrml file) and you add the second instance by loading the image (nrrd file).

If you want to load a saved scene then double-click the scene file or drag-and-drop the scene file (not the entire folder) to the application window.