Create README.md
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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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- StanfordKnees2019
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thumbnail: null
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tags:
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- image-reconstruction
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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: REC_UNet_StanfordKnees2019_gaussian2d_12x_AutoEstimationCSM
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results: []
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---
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## Model Overview
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UNet for 12x accelerated MRI Reconstruction on the StanfordKnees2019 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/REC/StanfordKnees2019/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/REC_UNet_StanfordKnees2019_gaussian2d_12x_AutoEstimationCSM/blob/main/REC_UNet_StanfordKnees2019_gaussian2d_12x_AutoEstimationCSM.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 Stanford Knees 2019 dataset to effectively use this model. Check the [StanfordKnees2019](https://github.com/wdika/atommic/blob/main/projects/REC/StanfordKnees2019/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: UNet
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channels: 64
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pooling_layers: 4
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in_channels: 2
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out_channels: 2
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padding_size: 11
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dropout: 0.0
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normalize: true
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norm_groups: 2
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dimensionality: 2
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reconstruction_loss:
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wasserstein: 1.0
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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: InverseSquareRootAnnealing
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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: 20
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precision: 16-mixed
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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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To compute the targets using the raw k-space and the chosen coil combination method, accompanied with the chosen coil sensitivity maps estimation method, you can use [targets](https://github.com/wdika/atommic/tree/main/projects/REC/StanfordKnees2019/conf/targets) configuration files.
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Evaluation can be performed using the [evaluation](https://github.com/wdika/atommic/blob/main/tools/evaluation/reconstruction.py) script for the reconstruction task, with --evaluation_type per_slice.
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Results
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-------
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Evaluation against SENSE targets
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--------------------------------
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12x: MSE = 0.001251 +/- 0.005686 NMSE = 0.04254 +/- 0.09148 PSNR = 31.4 +/- 6.554 SSIM = 0.7705 +/- 0.2946
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## Limitations
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This model was trained on the StanfordKnees2019 batch0 using a UNet coil sensitivity maps estimation and Geometric Decomposition Coil-Compressions to 1-coil, and might differ from the results reported on the challenge leaderboard.
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## References
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[1] [ATOMMIC](https://github.com/wdika/atommic)
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[2] Epperson K, Rt R, Sawyer AM, et al. Creation of Fully Sampled MR Data Repository for Compressed SENSEing of the Knee. SMRT Conference 2013;2013:1
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