ELI5: Explain Like I'm 5

Ultrasound computer tomography

Ultrasound computer tomography is like taking pictures of the inside of your body. And just like a regular camera takes pictures of the outside of your body, an ultrasound machine takes pictures of the inside. But instead of using light to take the pictures, the ultrasound machine uses sound waves.

When you go for an ultrasound computer tomography, you lie down and the doctor or technician puts a small machine called a transducer against your skin. The transducer sends out sound waves that bounce off your organs and tissues inside your body. The sound waves then bounce back to the transducer and the machine turns them into pictures on a computer screen.

It's like the sound waves are a flashlight and your organs and structures are like a mirror. When the flashlight is shone on the mirror, it bounces back and we can see a picture of what's in the room.

Doctors use ultrasound computer tomography when they want to see what's going on inside the body, like if they suspect there is a problem with an organ, or if they want to see how a baby is growing inside its mother's womb. And the best part is, unlike with X-rays, CT scans, or other imaging tests, there's no radiation involved with ultrasound computer tomography, so it's completely safe for you to have.