Hounsfield scale

Okay, so you know how doctors take pictures of the inside of your body to see what's wrong with it? They do this using special machines called scanners. These scanners take pictures of your body using something called x-rays, which are like camera flashes but they can go through your body.

Now, the problem is that when the scanner takes a picture, everything in your body shows up as the same color - it's like looking at a black and white photo where everything is gray. But doctors need to be able to see the different parts of your body so they can figure out what's going on. That's where the Hounsfield scale comes in.

The Hounsfield scale is like a special measurement system that the scanner uses to tell the difference between different things in your body. It gives everything in your body a number between -1000 and +1000, with different numbers representing different things. For example, bones have a high number because they're very solid, while air in your lungs has a very low number because it's very light and not solid at all.

By using the Hounsfield scale, doctors can tell the difference between different parts of your body in the scanner pictures. They can see if you have a broken bone, or if there's something wrong with your organs, or if there's a tumor growing. And that helps them figure out how to make you feel better!