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---
license: cc-by-nc-sa-4.0
datasets:
- Bubenpo/BreastDividerDataset
language:
- en
pipeline_tag: image-segmentation
tags:
- medical
---
# [MICCAI 2025 WOMEN] BreastDivider: A Large-Scale Dataset and Model for Left–Right Breast MRI Segmentation
**Read the paper:** [](https://arxiv.org/abs/2507.13830)
> **Authors**: Maximilian Rokuss\*, Benjamin Hamm\*, Yannick Kirchhoff\*, Klaus Maier-Hein
> \*equal contribution
---
## 🧠 Introduction
**Breast MRI** plays a pivotal role in breast cancer detection, diagnosis, and treatment planning. **BreastDivider** addresses a critical limitation in breast MRI segmentation: the lack of distinction between the **left and right breasts** in most public datasets and models.
In this work, we introduce the **first publicly available large-scale dataset with explicit left and right breast segmentation labels**, comprising **over 13,000 3D MRI scans**. Accompanying this dataset is a **robust nnU-Net–based segmentation model**, trained specifically to identify and separate left and right breast regions in clinical MRI data. This effort provides a foundation for developing high-quality, anatomically aware tools for breast MRI analysis and offers opportunities for large-scale pretraining.
🗂 This repository contains the **model only**\
📁 The dataset is available [here](https://huggingface.co/datasets/Bubenpo/BreastDividerDataset)\
🐳 A prebuilt Docker image is available on [DockerHub](https://hub.docker.com/r/ykirchhoff/breastdivider)
---
## 🧪 Model
The model is based on the [nnU-Net framework](https://github.com/MIC-DKFZ/nnUNet) and was trained on the full [BreastDivider dataset](https://huggingface.co/datasets/Bubenpo/BreastDividerDataset), using a custom configuration that allows both breasts to fit into a single 3D patch.
It generalizes well across a variety of MRI modalities, including:
- T1-weighted (T1)
- T1 with contrast (T1+C)
- T2-weighted (T2)
- FLAIR
- Diffusion-weighted imaging (DWI)
### 🔧 How to Use
#### 🛠️ Manual Installation
1. Install nnU-Net following the official [installation instructions](https://github.com/MIC-DKFZ/nnUNet/blob/master/documentation/installation_instructions.md).
2. Download the model using git or the huggingface_hub (c.f. [models-downloading](https://huggingface.co/docs/hub/models-downloading))
3. Run prediction with `nnUNetv2_predict_from_modelfolder -i input_folder -o output_folder -m /path/to/BreastDividerModel`
#### 🐳 Docker inference
You can use the prebuilt Docker container for easy deployment:\
**Pull the image:**
```
docker pull ykirchhoff/breastdivider:latest
```
**Run inference:**
```
docker run --ipc=host --rm --gpus all \
-v "/path/to/input/folder:/mnt/input" \
-v "/path/to/output/folder:/mnt/output" \
ykirchhoff/breastdivider:latest
```
---
## 📄 Citation
If you use this dataset or model in your work, please cite:
```bibtex
@article{rokuss2025breastdivider,
title = {Divide and Conquer: A Large-Scale Dataset and Model for Left–Right Breast MRI Segmentation},
author = {Rokuss, Maximilian and Hamm, Benjamin and Kirchhoff, Yannick and Maier-Hein, Klaus},
journal = {arXiv preprint arXiv:2507.13830},
year = {2025}
}
``` |