Comments (1)
Highly recommend reading this paper . Provides recent and clearly explained overview of current research in using CNN's for tumour segmentation This paper is also worth reading to get more general overview of tumour segmentation methods
Summary
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Three ways to perform tumour segmentation: Manual, Semi-Automatic, Fully-Automatic
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Manual is relatively accurate but suffers from high variability in results between radiologists and is time-consuming. However, manual segmentation is used to evaluate other methods
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Semi-Automatic methods are less time-consuming than manual but still suffer from high variability between radiologists
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Fully-Automatic methods can be divided into those defining custom features and CNNS
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CNN based methods have proven to be the most accurate
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One tumours are segmented they can be further investigated to determine response to therapy, type of cancer, etc
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CNNs use convolutional layers to apply filters to input image which serve to highlight certain features of the image
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There are a few common methods used to stop the overfitting of CNNs to the input data
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Data Augmentation: Changing the orientation and zoom of input images to stop CNN from relying on artifacts of input data
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Dropout: Dropping nodes of the CNN to introduce network imprecision
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Batch Normalization: Stabilizes CNN training by normalizing the affect individual nodes of model have; helpful as some may become highly biased
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Pooling: Downsampling the image to force CNN to learn more imprecise features of the input dataset
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Output
from radiology-and-ai.
Related Issues (20)
- Try fixing logging such that we can see the graph during training
- Speed up elastic transform augmentation / power transfrom optimization HOT 1
- Determine how to use Skull stripping method Fateme sent
- Auto generate segmentation images during training
- Look into Normalization method sent by Fateme HOT 1
- Prepare for meeting/presentation with Fateme
- Train model with new stuff
- Add scaling factor to collator
- Change Z-score normalization to be able to ignore/not ignore the tumor area
- Coregistration, Skull Stripping with Robex, and Webdataset Tutorials
- Normalization, Augmentations, and model loading Tutorials
- Trainer/Wandb Tutorial
- Nyul Normalization Improvements
- Attempt to use TorchIO library for loading and transforming data
- Upload training script with TorchIO
- Apply various types of transformers and train with TorchIO
- Project Doc
- Training Scripts
- Visualization/Model Inference/nifti output
- Run test evaluation
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from radiology-and-ai.