Please advise - Slicer wiped older dicoms/segmentations when editing other files

Sus_Mu
Wed, 03 Dec 2025 13:36:33 +0000
Support

I am working on a project with batches of segmentations.

Batch A (prepared in October) and Batch B (prepared in November) were saved on my computer, without meaningful backup through TimeMachine or iCloud. I also have a Batch C (prepared in October) and Batch D and E (prepared in April).

I went back to Batch A and made some small edits, saving as normal. However, I realized once I did this, that Slicer had deleted the dicoms and segmentations of Batch B, as well as batch D completely off my desktop, without a trace. There are complete subfolders which went missing out of folders because they were from Batch A. They are not in my trash, nor can I find them when using applications like Data Drill. Other folders, from Batch A and C were not affected.

Furthermore, when I open Slicer, it states that there is no longer a database file in the location that it expects, and recommends to create a new one. In the folder, there are two files (ctkDICOM.sql and ctkDICOMTagCache.sql), but as I understand, these cannot recover segmentation files.

This has never happened to me before when I went back to edit older files, and I don’t understand why suddenly this happened.

Can you please help me understand a few things:

1. Are there files completely uncoverable?

2. Why did this happen?

3. How can I prevent this in the future?

Thank you very much.

4 posts - 3 participants