X-Ray

=X - Ray =

 X-rays are produced in parcels of energy called photons, just like light. There are two different atomic processes that can produce x-ray photons. One is called Bremsstrahlung, which is a fancy German name meaning "braking radiation." The other is called K-shell emission. They can both occur in heavy atoms like tungsten and both ways of making x-rays involve a change in the state of electrons.

====[| **Applet - hand**] **[| Applet - skull] In both applets, you can see how the person's hand under x-ray. In the left box, you can move the red rectangle around to see the different parts of the hand under x-ray, and using + and - can zoom in and out. On the left side of either image, you can activate a window/level control by using your mouse. Change the upper and lower gray level window limits by clicking and dragging in the red triangles or moving up/down/left/right within the red box. Try it in the right hand viewer to get a feel for it. ** ====



[| Andrew Barclay's Medical Imaging Pages]
 Andrew Barclay was the person who made this page. He used to work for Emory University, but now he's not working for Emory University, and he no longer work in medical imaging either. Now, he spend most of his time on a new [|child law and policy clinic]  at Emory that he started with his wife and friends.