Indeed, the word nuclear is so bad that nuclear-magnetic resonance (NMR) has to be called just magnetic in medicine. You go for an MRI, not NMRI.
When nuclear-magnetic resonance is used in a scientific or industrial setting for analyzing the chemical content of a sample, it is properly called NMR.
[Source: organic chemistry prof pointed this out, almost 30 years ago.]
However, MRI (magnetic resonance imaging) is the preferable term; the process has nothing to do with nuclear reactions or nuclear energy or nuclear material or nuclear bombs. The fact that the thing that is resonating with EM radiation are nucleic magnetic moments does not make the process nuclear in the usual sense of the word.
CT (computer tomography), on the other hand, is slightly deceptive term; it actually gives you a dose of X-rays. It should be called X-ray Computer Tomography (XRCT).
Because nuclear = bad word / bombs / chernobyl
They don't mind living in cities and breathing cars exhaust all day long even though it shaves years of their lives though. Real world boiling frog situation