Do you know anything about this? 80 exabytes is an insane amount of storage and is orders of magnitude larger than any dataset I'm familiar with. I believe Common Crawl is in the petabytes range, and [0] describes training a neural net on 300 million images (which would be 300PB if each image was 1MB, but I suspect images are smaller). 80 exabytes is 80 million terabytes and would cost hundreds of millions to store.
My guess is that some journalistic error occurred here, or perhaps someone confused "80 exabytes of data are generated during heart ultrasounds" with "we've stored 80 exabytes of heart ultrasound data".