Medical Technology

With X-rays, doctors detect problems human eyes can't see. X-rays are a form of invisible radiation. This powerful medical technology helps experts look inside the body and even treat illnesses. But early on, X-rays caused harm too, as people used them without enough protection. This history covers the discovery of X-rays, the development of safety standards, and the rise of more powerful and precise X-ray machines. Find out how modern doctors create digital images of the inner body—even 3D images of our brains!

Chances are, you are familiar with the name Walter Reed only because you have heard of the major army medical center named after him. Maybe you have heard of his name in general references related to yellow fever. Either way, there is so much more to this humble, hard-working man than most know. He wore many hats; husband, father, military officer, scientist, and doctor are just a few. His scientific achievements are benefiting humanity today.

This essay comes from the NPR series This I Believe, which features brief personal reflections from both famous and unknown Americans. The pieces that make up the series compel listeners to rethink not only what and how they have arrived at their beliefs, but also the extent to which they share them with others.