My apprehensions are fine thanks. You’re just not looking very hard.
Inventor of the television - John Logie Baird en.wikipedia.org/wiki/John_Logie_Baird
Inventor of the telephone - Alexander Graham Bell en.wikipedia.org/wiki/Alexander_Graham_Bell
On the MRI - per the wikipedia link you posted but may not have read thoroughly. “During the 1970s, a team led by John Mallard built the first full-body MRI scanner at the University of Aberdeen.” I’ll grant I could have been more specific.
If you want to argue invention exists at the point of theory instead of physical creation, then i suspect you will struggle find much that wasn’t posited, theorised, described or conceived in some way before America was colonised.
American exceptionalism is a thing…