> ## Documentation Index
> Fetch the complete documentation index at: https://docs.spine.altician.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Running Segmentation

> Execute AI segmentation on your MRI scan

## Steps

1. **Verify Helper connection** — Check the connection status in the right panel.
2. **Click Run** — In the right panel under **Meshes**, click the **Run** button.
3. **Monitor progress** — The progress bar shows the current stage:
   * **Initializing** — Preparing volume data
   * **Segmenting** — AI model inference (this is the longest step)
   * **Converting** — Generating 3D meshes from segmentation labels
4. **View results** — Segmentation meshes appear automatically on the 3D volume.

<img src="https://mintcdn.com/altician/0YBh5K6l-27QqsAD/images/segmentation-running.png?fit=max&auto=format&n=0YBh5K6l-27QqsAD&q=85&s=820e6b363c498d57acb8adbc21d5217d" alt="Segmentation in progress" width="320" height="400" data-path="images/segmentation-running.png" />

## Cancellation

Click the **Cancel** button next to the progress bar to stop a running segmentation.

## Constraints

<Warning>
  * **Recording blocks segmentation**: You cannot run segmentation while screen recording is active.
  * **Segmentation blocks recording**: You cannot start recording while segmentation is running.
</Warning>

## Caching

Segmentation results are cached locally. If you reload the same scan, previously computed results are restored instantly without re-running the AI model.