I know what is going on inside you
Magnetic resonance imaging is one of the miracles of modern science. It produces noninvasive 3-D images of the body using harmless magnetic fields and radio waves. And with a few additional tricks, it can also reveal details of the biochemical makeup of tissue.
That biochemical trick is called magnetic resonance spectroscopy, and it is a powerful tool for physicians and researchers studying the biochemistry of the body, including metabolic changes in tumors in the brain and in muscles.
In the new machine, the researchers place their sample on top of the diamond sensor, in a powerful magnetic field and zap it with radio waves. Any changes in the state of nearby nuclei causes the nitrogen array to fluoresce in various colors. And the array of nitrogen atoms produces a kind of image, just like a light sensitive CCD chip. They monitored these fireworks display to see what’s going on.