That is because it is! We found the DBTA data very amenable to AI and it is evidenced by the explosion of recent foundation models, see for e.g. doi.org/10.1038/s415... which used it as well.
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A multimodal whole-slide foundation model for pathology - Nature Medicine
Pretrained using 335,645 whole-slide images, a foundation model is developed to provide representations for slide- and patient-level tasks. It is capable of performing clinical tasks and generating re...