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.
Scientists soon learned that the large blood flow changes measured by H20-15 PET were also imaged by MRI. Functional magnetic resonance imaging (fMRI) was born. Since the 1990s, fMRI has come to dominate the brain mapping field due to its low invasiveness, lack of radiation exposure, and relatively wide availability.