[theglocksaint]

Non-Cartesian sampling of k-space is routinely used today in clinical practice and the reconstruction time or resources isn't a limiting factor. It is the reduced SNR among other effects that is limiting in these approaches.

If one MRI scanner can be more efficient, there is enough competition in the market for it to be wildly successful. The major vendors have enough technical parity for efficiency to be a key difference maker. Hospitals and health systems are the customer and they need throughput.