Testing the Segment Anything Model on radiology data
CoRR(2023)
摘要
Deep learning models trained with large amounts of data have become a recent
and effective approach to predictive problem solving -- these have become known
as "foundation models" as they can be used as fundamental tools for other
applications. While the paramount examples of image classification (earlier)
and large language models (more recently) led the way, the Segment Anything
Model (SAM) was recently proposed and stands as the first foundation model for
image segmentation, trained on over 10 million images and with recourse to over
1 billion masks. However, the question remains -- what are the limits of this
foundation? Given that magnetic resonance imaging (MRI) stands as an important
method of diagnosis, we sought to understand whether SAM could be used for a
few tasks of zero-shot segmentation using MRI data. Particularly, we wanted to
know if selecting masks from the pool of SAM predictions could lead to good
segmentations.
Here, we provide a critical assessment of the performance of SAM on magnetic
resonance imaging data. We show that, while acceptable in a very limited set of
cases, the overall trend implies that these models are insufficient for MRI
segmentation across the whole volume, but can provide good segmentations in a
few, specific slices. More importantly, we note that while foundation models
trained on natural images are set to become key aspects of predictive
modelling, they may prove ineffective when used on other imaging modalities.
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