It is perhaps not the best wording but I think it's pretty easy to take that "megabytes per second per dollar" statement and choose to interpret it less poorly, and more like "having better, cheaper and more abundant useful data about yourself and your health".
Whether midjourney helps with those goals or not is a related, but different conversation thread.
So even if it is only as good as an MRI, or even 80% as good as an MRI, if it is much cheaper and much more pleasant to go through, you will get MORE people doing it, and get it prescribed in more situations.
That's at least how I read the benefits, democratization of imaging techniques rather than just improvement.
Obviously not all data is useful or meaningful, but even with the tech we already have, there's a ton of it that we're just not collecting or using.
That’s a lot of data really fast, so if you want this 3D scan of your body, yes, you do want as much data as fast as possible. 60 seconds sounds great compared to an MRI that’s going to take 15 minutes minimum & up to an hour or more.
If you don’t want then scan then carry on as usual.
I think the point many commenters are making is that yes, lots of data IS necessary to do this scan effectively and quickly, it's not the only heuristic, and it's a bit misleading to compare it to the speed of an MRI given that this does not produce the same data as an MRI.
This is deeply silly and nonsensical framing. You don't want "lots of data really fast", you want high-quality, diagnostically useful data. If the fastest way to generate that is via 15-minute MRIs, then that is vastly more ideal than a bullshit scan that takes seconds.