# TotalSegmentator v2

**URL:** <https://discourse.slicer.org/t/totalsegmentator-v2/32470>\
**Category:** Announcements\
**Tags:** feature, segmentation, totalsegmentator\
**Created:** [October 30, 2023, 10:36am UTC](https://discourse.slicer.org/t/totalsegmentator-v2/32470 "2023-10-30T10:36:55Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![rbumm](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rbumm/32/9404_2.png) [@rbumm](https://discourse.slicer.org/u/rbumm)\
**Post date:** [October 30, 2023, 10:36am UTC](https://discourse.slicer.org/t/totalsegmentator-v2/32470/1 "2023-10-30T10:36:55Z")

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We are excited to announce that the 3D Slicer TotalSegmentator extension is now compatible with TotalSegmentator v2!

TotalSegmentator stands out as a powerful tool, proficient in segmenting up to 117 classes in CT images. It is robust, fast, comprehensive, and can even be run without a GPU. Given its training on a vast variety of CT images - spanning different scanners, institutions, and protocols - it works consistently well across a broad spectrum of images.

These new structures are available in the freely available “total” (full-body CT segmentation) model: skull, sternum, costal cartilages, lumbosacral joint (S1), spinal cord, thyroid gland, prostate, brachiocephalic vein (left, right, trunk), common carotid artery (left/right), left atrial appendage, subclavian artery (left/right), pulmonary vein, superior vena cava, kidney cyst.

 ![image_00002](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/9/7/970fcfc79165f686cb1df8e39dac950f4e89e045.jpeg)

Additional freely usable models (including some less robust, experimental ones): body surface, vertebral bodies, lung vessels, cerebral bleed, hip implants, coronary arteries, pleural and pericardial effusion.

New models with restricted license (free for academic use with some limitations; or paid commercial license) are also available, such as appendicular bones (patella, tibia, fibula, tarsal, metatarsal, feet phalanges; ulna, radius, carpal, metacarpal, hand phalanges) and tissue types (subcutaneous fat, skeletal muscle, torso fat).

Detailed description of all updates in TotalSegmentator v2 is available [here](https://github.com/wasserth/TotalSegmentator/blob/master/resources/improvements_in_v2.md).

To try these enhancements, install latest Slicer Preview Release (version 5.5.0 - rev32251, or later) and the TotalSegmentator extension.

Thank you for @wasserth for keeping developing [TotalSegmentator](https://github.com/wasserth/TotalSegmentator), @lassoan for maintaining the Slicer extension, and @fedorov and @dclunie for helping with updating standard terminology for all the new structures.

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_[View the full topic](https://discourse.slicer.org/t/totalsegmentator-v2/32470)._