Commit ·
d24ca41
0
Parent(s):
CASIMIR v1.0.0
Browse files- .gitattributes +37 -0
- LICENSE +201 -0
- README.md +107 -0
- assets/casimir-overview-dark.png +3 -0
- assets/casimir-overview.png +3 -0
- dataset.json +31 -0
- fold_all/weights.pth +3 -0
- plans.json +444 -0
.gitattributes
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|
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|
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|
|
|
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|
|
|
|
|
| 1 |
+
---
|
| 2 |
+
license: apache-2.0
|
| 3 |
+
library_name: casimir
|
| 4 |
+
pipeline_tag: image-segmentation
|
| 5 |
+
tags:
|
| 6 |
+
- medical-imaging
|
| 7 |
+
- mri
|
| 8 |
+
- whole-body
|
| 9 |
+
- segmentation
|
| 10 |
+
- nnunet
|
| 11 |
+
- pediatrics
|
| 12 |
+
---
|
| 13 |
+
|
| 14 |
+
# CASIMIR: An Open Pediatric Model for Whole-Body T1-Weighted MRI Anatomy Segmentation
|
| 15 |
+
|
| 16 |
+
[](https://github.com/fjhorvath/casimir) [](https://huggingface.co/fjhorvath/casimir/blob/main/LICENSE)
|
| 17 |
+
|
| 18 |
+
CASIMIR (Child Anatomy Segmentation In MRI with Increased Robustness) is a 2D
|
| 19 |
+
[nnU-Net v2](https://github.com/MIC-DKFZ/nnUNet) model that segments six visceral organs and
|
| 20 |
+
seven skeletal structures in pediatric and young-adult whole-body T1-weighted MRI, paired
|
| 21 |
+
structures labeled by side. This repository holds the weights. The inference code is on
|
| 22 |
+
[GitHub](https://github.com/fjhorvath/casimir). The model and its evaluation are described
|
| 23 |
+
in a manuscript that is not yet published, see Citation.
|
| 24 |
+
|
| 25 |
+
<p align="center">
|
| 26 |
+
<img class="dark:hidden" src="assets/casimir-overview.png" width="560" alt="Four axial T1 slices with the CASIMIR overlay, mid thorax to lower leg, beside a whole-body rendering of CASIMIR output with each cutting plane marked, the lower legs from a second examination">
|
| 27 |
+
<img class="hidden dark:block mx-auto" src="assets/casimir-overview-dark.png" width="560" alt="Four axial T1 slices with the CASIMIR overlay, mid thorax to lower leg, beside a whole-body rendering of CASIMIR output with each cutting plane marked, the lower legs from a second examination">
|
| 28 |
+
</p>
|
| 29 |
+
|
| 30 |
+
## Inference
|
| 31 |
+
|
| 32 |
+
```bash
|
| 33 |
+
pip install git+https://github.com/fjhorvath/casimir.git@v1.0.0
|
| 34 |
+
casimir -i <nifti file or directory> -o <output directory>
|
| 35 |
+
```
|
| 36 |
+
|
| 37 |
+
Add `--device cpu` if there is no NVIDIA GPU, or `--device mps` on Apple silicon.
|
| 38 |
+
`casimir --help` lists all flags. The weights are downloaded from here on the first run.
|
| 39 |
+
For offline use, set `CASIMIR_WEIGHTS_PATH` to a local copy.
|
| 40 |
+
|
| 41 |
+
The input is NIfTI, `.nii` or `.nii.gz`. The tested volumes were converted from DICOM with
|
| 42 |
+
dicom2nifti and reorientation disabled (`reorient_nifti=False`), which keeps the scanner's
|
| 43 |
+
axis order. nnU-Net reads the voxel array as stored, so a volume saved in another axis
|
| 44 |
+
order is untested.
|
| 45 |
+
|
| 46 |
+
The output is one label map per input, on the input grid and under the input filename,
|
| 47 |
+
with the voxel values listed below. One whole-body examination takes about 1.5 minutes on
|
| 48 |
+
an RTX 4090 or on an Apple M2 Pro with `--device mps`, and about 4 minutes on the M2 Pro
|
| 49 |
+
with `--device cpu`.
|
| 50 |
+
|
| 51 |
+
## Files
|
| 52 |
+
|
| 53 |
+
`dataset.json` and `plans.json` are the nnU-Net v2.5 dataset descriptor and plans.
|
| 54 |
+
`fold_all/weights.pth` is the checkpoint, a single fold trained on all training cases, with
|
| 55 |
+
no ensemble. `LICENSE` is the Apache License 2.0.
|
| 56 |
+
|
| 57 |
+
## Structures
|
| 58 |
+
|
| 59 |
+
The 13 structures give 20 labels, one per side for the paired ones:
|
| 60 |
+
|
| 61 |
+
| | | | |
|
| 62 |
+
|---|---|---|---|
|
| 63 |
+
| 1 fibula left | 2 fibula right | 3 femur left | 4 femur right |
|
| 64 |
+
| 5 tibia left | 6 tibia right | 7 spine | 8 liver |
|
| 65 |
+
| 9 lung left | 10 lung right | 11 sacrum | 12 spleen |
|
| 66 |
+
| 13 humerus left | 14 humerus right | 15 heart | 16 urinary bladder |
|
| 67 |
+
| 17 pelvis left | 18 pelvis right | 19 kidney left | 20 kidney right |
|
| 68 |
+
|
| 69 |
+
Background is `0`. The output is the raw argmax with no post-processing.
|
| 70 |
+
|
| 71 |
+
## Intended use
|
| 72 |
+
|
| 73 |
+
CASIMIR is a research tool, not a medical device. Do not use its output for clinical
|
| 74 |
+
decisions.
|
| 75 |
+
|
| 76 |
+
It was trained and evaluated on contrast-enhanced axial fat-suppressed T1-weighted
|
| 77 |
+
gradient-echo whole-body MRI from a single 3-T PET/MR system, in patients aged 1 to 21
|
| 78 |
+
years with lymphoma or post-transplant lymphoproliferative disorder. External validation is
|
| 79 |
+
required to establish generalizability.
|
| 80 |
+
|
| 81 |
+
## License
|
| 82 |
+
|
| 83 |
+
These weights and the inference code are released under the Apache License 2.0, see
|
| 84 |
+
`LICENSE`.
|
| 85 |
+
|
| 86 |
+
## Citation
|
| 87 |
+
|
| 88 |
+
Until the manuscript is published, cite the software:
|
| 89 |
+
|
| 90 |
+
```bibtex
|
| 91 |
+
@software{horvath2026casimir,
|
| 92 |
+
author = {Horvath, Felix J. and Barrow, Michael J. and Singh, Shashi B. and Lokesha, Yashas U. and Okpokpo, Darlene and Sivanandam, Sharanya and Gatidis, Sergios and Daldrup-Link, Heike E.},
|
| 93 |
+
title = {{CASIMIR}: An Open Pediatric Model for Whole-Body T1-Weighted {MRI} Anatomy Segmentation},
|
| 94 |
+
version = {1.0.0},
|
| 95 |
+
year = {2026},
|
| 96 |
+
url = {https://github.com/fjhorvath/casimir}
|
| 97 |
+
}
|
| 98 |
+
```
|
| 99 |
+
|
| 100 |
+
CASIMIR is built on nnU-Net, please also cite
|
| 101 |
+
[Isensee et al. (2021)](https://doi.org/10.1038/s41592-020-01008-z).
|
| 102 |
+
|
| 103 |
+
## Funding
|
| 104 |
+
|
| 105 |
+
This work was supported by a grant from the National Cancer Institute, grant number
|
| 106 |
+
R01 CA269231. Felix J. Horvath was supported by a travel grant from the Rolf W. Günther
|
| 107 |
+
Foundation for Radiological Sciences.
|
assets/casimir-overview-dark.png
ADDED
|
Git LFS Details
|
assets/casimir-overview.png
ADDED
|
Git LFS Details
|
dataset.json
ADDED
|
@@ -0,0 +1,31 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
{
|
| 2 |
+
"labels": {
|
| 3 |
+
"background": 0,
|
| 4 |
+
"fibulaLeft": 1,
|
| 5 |
+
"fibulaRight": 2,
|
| 6 |
+
"femurLeft": 3,
|
| 7 |
+
"femurRight": 4,
|
| 8 |
+
"tibiaLeft": 5,
|
| 9 |
+
"tibiaRight": 6,
|
| 10 |
+
"spine": 7,
|
| 11 |
+
"liver": 8,
|
| 12 |
+
"lungLeft": 9,
|
| 13 |
+
"lungRight": 10,
|
| 14 |
+
"sacrum": 11,
|
| 15 |
+
"spleen": 12,
|
| 16 |
+
"humerusLeft": 13,
|
| 17 |
+
"humerusRight": 14,
|
| 18 |
+
"heart": 15,
|
| 19 |
+
"urinaryBladder": 16,
|
| 20 |
+
"pelvisLeft": 17,
|
| 21 |
+
"pelvisRight": 18,
|
| 22 |
+
"kidneyLeft": 19,
|
| 23 |
+
"kidneyRight": 20
|
| 24 |
+
},
|
| 25 |
+
"channel_names": {
|
| 26 |
+
"0": "MRI_MISC"
|
| 27 |
+
},
|
| 28 |
+
"file_ending": ".nii.gz",
|
| 29 |
+
"name": "CASIMIR",
|
| 30 |
+
"description": "CASIMIR: 20-structure anatomical segmentation for whole-body T1-weighted MR."
|
| 31 |
+
}
|
fold_all/weights.pth
ADDED
|
@@ -0,0 +1,3 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
version https://git-lfs.github.com/spec/v1
|
| 2 |
+
oid sha256:3857eb116c0f05ca814894f4863fce5ec48eab271f0f8f7837e6306732f049e7
|
| 3 |
+
size 132001110
|
plans.json
ADDED
|
@@ -0,0 +1,444 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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