The industry with the most welders is the architectural and structural metals manufacturing industry. It offers a mean wage of $34,960, much closer to the average for welders as a whole. Pay in the five industries with the greatest number of welders ranges from $32,900 to $37,600 per year.
Magnetic Resonance Imaging device [36â39]. However, the original idea of applying NMR to medical. imaging (MRI) was first proposed by Raymond V, Damadian, M.D. [40], who was granted a U.S. patent for an MRI scanner, and founded a company to manufacture such scanners.
The first images were produced in the early 1970s, and the first live human subject was imaged in 1977. MRI machines became commercially available in the 1980s, and are now commonly used for imaging internal body structures, especially soft tissues like the brain.