Radiological and magnetic resonance imaging is unlikely to prove capable of imaging collections of neurons finer than 100s or 10s of individual neurons.
I’ve long believed the “next generation” of brain imaging technology would be an advanced radiological system, likely some kind of sub-atomic particle beam (possibly antimatter). However, if it proves possible to rapidly and massively infiltrate the brain with 500 nanometer (5e-7 meter) wires capable of measuring depolarization events of individual neurons, this may prove more effective.
Extensive high-resolution realtime imaging of the brain raises the possibility of (shameless old thread plug)
uploading you mind into a computer. Such a simulation need not need to well
understand the neural spatial arrangement and activity, just precisely
measure it.