No Homer, you're wrong. There are some thing in life that cannot be improved upon. One of them is the amount of radiation it takes to do deep detailed scanning of the human body.
Another example is no one has developed a better loud speaker than the one that was designed 100 years ago. The transducer loudspeaker.
Homer is correct. They said that about the horse when the automobile came out! MRIs will be replaced just like every other technology! More open designs and less radiation and better detail.