How do x ray machines work?

Answer 1

There are two important parts of an X-ray machine, the x-ray source and the x-ray detector.

In your body, your bones are x-ray opaque-x-ray cannot pass through it and so, x-ray is detected on the x-ray detector but not your bones. And when x-ray is flashed on your body you can see the silhouette of your bones, assuming that there is an x-ray detector opposite the x-ray source..

Why is the silhouette on the film not black?The photograph of the x-ray was subjected to negativity (Photography) and so the lighter areas in the original picture become darker and the darker areas (silhouette of your bones) in the original picture become lighter.

How can this x-ray opaque concept be used?Cerebral angiography is used to see if your brain is bleeding, if it has blood clots and many more. In this contrast x-ray procedure, a radio opaque dye that absorbs more or less x-ray photons than the surrounding tissue is injected into a cerebral artery so that the practitioner could see the cerebral circulatory system.