Most likely in large cities in the US. Could easily be concealed as a radio antenna or a ground level transformer. Also they could be placed in Skytrain stations or sports stadiums where people are stationary for large periods of time and alot of traffic. You need an emitter and receiver for MRI map correctly
It has already happened.
Mark my words.
Nah. According to this article, it takes MRI scans of the brain. I don't think that there is remote MRI imaging available...yet.
powerful enough radio towers or ungerground cables could be emitting Mri frequencies to map the local environment
Could. But the question is, are they?
Most likely in large cities in the US. Could easily be concealed as a radio antenna or a ground level transformer. Also they could be placed in Skytrain stations or sports stadiums where people are stationary for large periods of time and alot of traffic. You need an emitter and receiver for MRI map correctly