Series → multiple series split
Divide one series into several based on acquisition or slice position.
Problem
A single DICOM series contains slices from two different acquisitions — the pre-contrast and post-contrast scans were accidentally saved under the same Series Instance UID. The PACS viewer displays them as one stack, making it impossible to compare pre and post side-by-side. You need to split the series by selecting specific instances to move into a new series.
Steps
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Open the files (⌘O) and switch to the Files tab in the right rail.
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Click the 🥞 Split Slices button on the series row. A slice selection panel opens.
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Select instances — check the boxes next to the slices/instances you want to move to a new series. The “Select All” label updates to show the count.
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Click “Split Selected” to execute the split. The tree now shows two series rows.
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Verify the new Series Instance UID — click the new series to select it, switch to Edit mode (⌘3), filter for Series Instance UID (0020,000E). The value is new, non-empty, and longer than 10 characters.
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Merge back (if needed) — use the Merge series dropdown on a series row to absorb the other series back into one.
Expected Result
- After split: two series rows with distinct Series Instance UIDs.
- The new series receives an application-generated Series Instance UID.
- After merge: one series row (the surviving series absorbs the other).
- Splitting and merging are tracked as undoable structural changes.