# How to merge two CT series (Thorax + AbdoPelvis) into one continuous volume in Slicer 5.10

**URL:** <https://discourse.slicer.org/t/how-to-merge-two-ct-series-thorax-abdopelvis-into-one-continuous-volume-in-slicer-5-10/45058>\
**Category:** Support\
**Created:** [November 12, 2025, 10:40pm UTC](https://discourse.slicer.org/t/how-to-merge-two-ct-series-thorax-abdopelvis-into-one-continuous-volume-in-slicer-5-10/45058 "2025-11-12T22:40:40Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Julien\_Ancel](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/julien_ancel/32/81212_2.png) [@Julien\_Ancel](https://discourse.slicer.org/u/Julien_Ancel)\
**Post date:** [November 12, 2025, 10:40pm UTC](https://discourse.slicer.org/t/how-to-merge-two-ct-series-thorax-abdopelvis-into-one-continuous-volume-in-slicer-5-10/45058/1 "2025-11-12T22:40:40Z")

</div>

Hello everyone,

I’m working on a quantitative imaging project and I have two CT series from the same patient:

- one **Thorax** series (`Thorax MEDIASTIN 2.0 MPR ax`)

- one **AbdoPelvis** series (`PORTAL 2.0 MPR ax`).

Both are from the same acquisition session, with similar spacing (≈ 2 mm) and kernel, but they are stored as two separate series in DICOM.  
I would like to **merge them into one single continuous volume (thoraco-abdominopelvic)** for segmentation and radiomic analysis.

**Question:**  
What is the correct way (either via GUI or Python) to merge two contiguous CT volumes into a single continuous one in Slicer 5.10, preserving HU values and patient coordinates?  
Is there a recommended extension or function for this (e.g., Merge Volumes, SlicerMorph, etc.)?

Any example code or workflow would be greatly appreciated.

Thanks a lot for your help!  
Julien

---

<div class="post-metadata">

**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [November 12, 2025, 11:43pm UTC](https://discourse.slicer.org/t/how-to-merge-two-ct-series-thorax-abdopelvis-into-one-continuous-volume-in-slicer-5-10/45058/2 "2025-11-12T23:43:35Z")

</div>

This may be what you are looking for:

> **[GitHub - mikebind/SlicerStitchImageVolumes: A 3D Slicer (slicer.org) module for stitching...](https://github.com/mikebind/SlicerStitchImageVolumes)**
>
> A 3D Slicer (slicer.org) module for stitching together multiple image volumes into a single larger image volume.