While they lie there, the scanner builds up a picture of what’s inside their skulls. Often MR images are made for physicians, to find a tumor or a blocked blood vessel. Scientists also make the images, to study brain function and development. In my lab, at MIT, we use MRI to watch blood flow through the brains of children; we read them stories and observe how their brain activity changes in reaction to the plot. By doing so, we’re investigating how children think about other people’s thoughts.
This particular MR image, though, was not made for diagnostic purposes, nor even really for science. No one, to my knowledge, had ever made an MR image of a mother and child. We made this one because we wanted to see it.
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