Chapter 1

🔊 How Ultrasound Works – Step by Step

1. The Probe Sends Sound Waves
   The probe (also called transducer) sends high-frequency sound waves into the body.
   
   

2. Waves Hit Organs and Tissues
   When the sound waves touch an organ or tissue, they bounce back like an echo.
   
   

3. Echoes Return to the Probe
   The probe receives the echoes.
   
   

4. The Machine Converts Echoes to Images
   The ultrasound machine changes these echoes into pictures on the screen.
   
   

🖼️ Illustration: How Ultrasound Works

Here is a simple picture that explains the process visually:

💬 Important Terms

Term

Meaning

Probe

The device that sends and receives sound waves

Gel

A jelly used to help sound waves move better

Echo

The sound that bounces back from inside the body

Monitor

The screen where images appear

🔁 Real-Life Example

If you use the probe on a pregnant woman’s belly:

• The waves go into her womb.
  
  

• They bounce off the baby.
  
  

• The machine shows a picture of the baby moving inside.