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Segment Anything Model for Medical Image Analysis: an Experimental Study

By Maciej Mazurowski, Haoyu Dong, Hanxue Gu, Jichen Yang, Nicholas Konz and Yixin Zhang.

This is the official repository for our paper: Segment Anything Model for Medical Image Analysis: an Experimental Study, recently published in Medical Image Analysis, where we evaluated Meta AI's Segment Anything Model (SAM) on many medical imaging datasets.

Installation

The code requires installing SAM's repository Segment Anything (SAM). The model and dependencies can be found at SAM's repository, or you can install them with

git clone https://github.com/facebookresearch/segment-anything.git
cd segment-anything; pip install -e .

Optionally, we have included code to evaluate Reviving Iterative Training with Mask Guidance for Interactive Segmentation (RITM) on the datasets. All you need to do to use our code for this is to clone their repository locally:

git clone https://github.com/yzluka/ritm_interactive_segmentation

Getting start

First, download SAM's model checkpoint

wget https://dl.fbaipublicfiles.com/segment_anything/sam_vit_h_4b8939.pth

If you want to run SAM (and competing methods) with iterative prompts, run the code with:

python3 prompt_gen_and_exec_v1.py --num-prompt XXX --model sam/ritm

where it will ask you to enter the dataset you wish to evaluate on.

Optionally, to run RITM, you need to download its weights via:

wget https://github.com/saic-vul/ritm_interactive_segmentation/releases/download/v1.0/coco_lvis_h32_itermask.pth

If you want to run SAM with the 5 mode proposed in the paper, run the code with:

python3 prompt_gen_and_exec_v2_allmode.py 

The 5 mode strategy includes (also shown in Figure 1, ):

• 1 point at the center of the largest component
• 1 point at the center of each component (put at most 3 points)
• 1 box sharply around the largest component
• 1 box sharply around each component (put at most 3 boxes)
• 1 box covers all object

Obtaining datasets from our paper

TODO

Adding custom datasets

To evaluate your own dataset, you need to format the dataset as:

  XXX:
     images:
        abc.png
        def.png
        ...
     masks:
        abc.png
        def.png
        ...

where images and masks should have the same name.

News

• 1 We have released our experimental results with detailed numerical numbers that were used to make figures in our paper; these tables are under the subfolder /experimental_results_tables.

Citation

If you find our work to be useful for your research, please cite our paper:

@article{mazurowski2023segment,
  title={Segment anything model for medical image analysis: an experimental study},
  author={Mazurowski, Maciej A and Dong, Haoyu and Gu, Hanxue and Yang, Jichen and Konz, Nicholas and Zhang, Yixin},
  journal={Medical Image Analysis},
  volume={89},
  pages={102918},
  year={2023},
  publisher={Elsevier}
}