MedicineComputer vision

FleXray

Finds 60 anatomical structures on an X-ray: ribs, vertebrae, pelvis and limb bones. They can be used to measure, for example, the curvature angle of the spine automatically. It does not look for pathologies and does not tell right from left.

Developer
MIT CSAIL, Massachusetts General Hospital and Harvard Medical School, USA
First release
Jun 2026
Latest release
Oct 2026
Sizes
a small U-Net, 256 by 256 pixel images
License
Non-commercial onlyCC BY-NC 4.0 (non-commercial use only); a research release, not a clinical product
Running
On your own serverAlso runs without a GPU
Industries
Healthcare, Science and research
Deploy on your server Hugging Face GitHub

What it does

  • labeling anatomy on X-ray images
  • measuring the spine curvature angle
  • matching fluoroscopy frames with CT for navigation
  • preparing data for research

Where it is used

research groups and universitiesmedical software developers (for prototypes)training radiologists

Hardware requirements

LaptopLaptop or regular PC, up to 8 GB of VRAM — smaller versions
fits
1 GPUOne GPU with 16–80 GB — mid-size versions
no versions
ClusterServer with several GPUs — flagship versions
no versions

Versions

  1. FleXray (одна сеть и ансамбль из пяти)

How to run it

On your own serverWeights are downloaded from Hugging Face and served with vLLM (load and API) or llama.cpp (modest hardware). The model then runs in a closed network with no per-request fees.Hugging Face
How much hardware you needCalculate the VRAM for the model size, context length and number of concurrent requests.Open the hardware calculator

I can set this up end to end: pick the model size, deploy it on your server and connect it to your systems.

Frequently asked questions

Can FleXray be used in a commercial project?

No. License: CC BY-NC 4.0 (non-commercial use only); a research release, not a clinical product. A commercial product needs a different model or a separate agreement with the rights holder.

What hardware does FleXray need?

At minimum: Laptop or regular PC, up to 8 GB of VRAM — smaller versions. Some versions also run on an ordinary CPU, without a GPU. You can calculate the exact VRAM for your model size and context in the hardware calculator.

Does FleXray support Russian?

Language does not matter for this model: it does not work with text.

Where can I download FleXray and what does it cost?

The FleXray weights are open and free to download. You only pay for the hardware it runs on and for the setup. Source links are at the bottom of this page.

How I deploy it for clients

  1. SelectionI pick the model size for your task and hardware and test it on your examples.
  2. DeploymentI deploy it on your server or in a closed network and provide an API.
  3. Fine-tuningI fine-tune it on your data (LoRA) or connect a knowledge base — whichever is cheaper for the task.
  4. IntegrationI connect it to your CRM, ERP, bot, website or team chat and set up monitoring.

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Details

Source: huggingface.co/VictorButoi/flexray. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.