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---
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language: en
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tags:
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- medical-imaging
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- mri
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- self-supervised
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- 3d
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- neuroimaging
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license: apache-2.0
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library_name: pytorch
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datasets:
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- custom
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---
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# SimCLR-MRI Pre-trained Encoder (Base)
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This repository contains a pre-trained 3D CNN encoder for MRI analysis. The model was trained using contrastive learning (SimCLR) on MPRAGE brain MRI scans, using standard image augmentations.
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## Model Description
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The encoder is a 3D CNN with 5 convolutional blocks (64, 128, 256, 512, 768 channels), outputting 768-dimensional features. This base variant was trained on real MPRAGE scans using standard contrastive augmentations (random rotations, flips, intensity changes).
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### Training Procedure
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- **Pre-training Data**: 51 qMRI datasets (22 healthy, 29 stroke subjects)
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- **Augmentations**: Standard geometric and intensity transformations
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- **Input**: 3D MPRAGE volumes (96×96×96)
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- **Output**: 768-dimensional feature vectors
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## Intended Uses
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This encoder is particularly suited for:
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- Transfer learning on T1-weighted MRI tasks
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- Feature extraction for structural MRI analysis
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- General brain MRI representation learning
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