MRI is a potential application of room temperature superconductor in general, but not specifically for LK-99. One disadvantage of LK-99 is that it has very low critical current, see patent figure 10.
On the other hand, 300 mA is more than enough for computing applications.
We are still at the if-it-is-real stage. I would not take any wagers that the generation one release is indicative of an industrialized product performance.
On the other hand, 300 mA is more than enough for computing applications.