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README.md
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---
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language:
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- en
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license: apache-2.0
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library_name: atommic
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datasets:
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- ISLES2022SubAcuteStroke
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thumbnail: null
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tags:
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- image-segmentation
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- UNet
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- ATOMMIC
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- pytorch
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model-index:
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- name: SEG_UNet_ISLES2022SubAcuteStroke
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results: []
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---
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## Model Overview
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AttentionUNet for MRI Segmentation on the ISLES2022SubAcuteStroke dataset.
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## ATOMMIC: Training
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To train, fine-tune, or test the model you will need to install [ATOMMIC](https://github.com/wdika/atommic). We recommend you install it after you've installed latest Pytorch version.
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```
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pip install atommic['all']
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```
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## How to Use this Model
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The model is available for use in ATOMMIC, and can be used as a pre-trained checkpoint for inference or for fine-tuning on another dataset.
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Corresponding configuration YAML files can be found [here](https://github.com/wdika/atommic/tree/main/projects/SEG/ISLES2022SubAcuteStroke/conf).
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### Automatically instantiate the model
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```base
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pretrained: true
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checkpoint: https://huggingface.co/wdika/SEG_UNet_ISLES2022SubAcuteStroke/blob/main/SEG_UNet_ISLES2022SubAcuteStroke.atommic
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mode: test
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```
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### Usage
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You need to download the ISLES 2022 Sub Acute Stroke dataset to effectively use this model. Check the [ISLES2022SubAcuteStroke](https://github.com/wdika/atommic/blob/main/projects/SEG/ISLES2022SubAcuteStroke/README.md) page for more information.
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## Model Architecture
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```base
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model:
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model_name: SEGMENTATIONUNET
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segmentation_module: UNet
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segmentation_module_input_channels: 3
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segmentation_module_output_channels: 1
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segmentation_module_channels: 32
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segmentation_module_pooling_layers: 5
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segmentation_module_dropout: 0.0
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segmentation_module_normalize: false
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segmentation_loss:
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dice: 1.0
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dice_loss_include_background: true # always set to true if the background is removed
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dice_loss_to_onehot_y: false
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dice_loss_sigmoid: false
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dice_loss_softmax: false
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dice_loss_other_act: none
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dice_loss_squared_pred: false
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dice_loss_jaccard: false
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dice_loss_flatten: false
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dice_loss_reduction: mean_batch
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dice_loss_smooth_nr: 1e-5
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dice_loss_smooth_dr: 1e-5
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dice_loss_batch: true
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dice_metric_include_background: true # always set to true if the background is removed
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dice_metric_to_onehot_y: false
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dice_metric_sigmoid: false
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dice_metric_softmax: false
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dice_metric_other_act: none
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dice_metric_squared_pred: false
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dice_metric_jaccard: false
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dice_metric_flatten: false
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dice_metric_reduction: mean_batch
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dice_metric_smooth_nr: 1e-5
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dice_metric_smooth_dr: 1e-5
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dice_metric_batch: true
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segmentation_classes_thresholds: [ 0.5 ]
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segmentation_activation: sigmoid
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magnitude_input: true
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log_multiple_modalities: true # log all modalities in the same image, e.g. T1, T2, T1ce, FLAIR will be concatenated
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normalization_type: minmax
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normalize_segmentation_output: true
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complex_data: false
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```
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## Training
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```base
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optim:
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name: adamw
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lr: 1e-4
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betas:
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- 0.9
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- 0.999
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weight_decay: 0.0
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sched:
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name: CosineAnnealing
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min_lr: 0.0
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last_epoch: -1
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warmup_ratio: 0.1
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trainer:
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strategy: ddp_find_unused_parameters_false
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accelerator: gpu
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devices: 1
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num_nodes: 1
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max_epochs: 50
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precision: 16-mixed # '16-mixed', 'bf16-mixed', '32-true', '64-true', '64', '32', '16', 'bf16'
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enable_checkpointing: false
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logger: false
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log_every_n_steps: 50
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check_val_every_n_epoch: -1
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max_steps: -1
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```
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## Performance
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Evaluation can be performed using the segmentation [evaluation](https://github.com/wdika/atommic/blob/main/tools/evaluation/segmentation.py) script for the segmentation task, with --evaluation_type per_slice.
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Results
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-------
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Evaluation
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----------
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ALD = 0.9088 +/- 3.953 AVD = 0.5439 +/- 3.921 DICE = 0.6946 +/- 0.5589 L-F1 = 0.7859 +/- 0.5848
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## Limitations
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This model was trained on the ISLES2022SubAcuteStroke dataset with stacked ADC, DWI, FLAIR images and might differ in performance compared to the leaderboard results.
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## References
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[1] [ATOMMIC](https://github.com/wdika/atommic)
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[2] Petzsche MRH, Rosa E de la, Hanning U, et al. ISLES 2022: A multi-center magnetic resonance imaging stroke lesion segmentation dataset. Scientific Data 1 2022;9
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