HOw does Ultrasonograph create an image of the body part such as a developing fetus?

http://www.americanpregnancy.org/prenataltesting/ultrasound.html

I read through the Website and am very surprised at all the electronics they have in health care, and how ultra sounds can do just that particular thing. And once again thank-you, this is Helping me alot, i have an 80 question packet to do for MEdical and those questions i posted are the only ones Left YAhhhhhhhh!!!!

I just found those websites by using Google.

For example, for this one, I just went to www.google.com and typed in how does sonogram work

Okay i will do that next time

An ultrasonograph, also known as an ultrasound machine, uses sound waves to create images of the body part being examined, such as a developing fetus. Here's a simplified explanation of how it works:

1. Generating sound waves: The ultrasound machine contains a component called a transducer. This transducer emits high-frequency sound waves, typically in the range of 2 to 18 megahertz (MHz). These sound waves are inaudible to humans.

2. Transmitting the sound waves: The transducer is placed on the skin of the patient, usually with the help of a gel to improve contact and reduce air bubbles. The transducer then emits a series of sound waves into the body.

3. Sound wave interaction: When the sound waves encounter different tissues or structures within the body, they either get absorbed, scattered, or reflected.

4. Echo formation: When the sound waves encounter a boundary, such as the boundary between different tissue types or an organ, a portion of the sound waves gets reflected back towards the transducer in a process called an echo.

5. Echo detection: The transducer then acts as a receiver, detecting the echoes produced by the reflected sound waves. It converts these echoes into electrical signals.

6. Signal processing: The electrical signals are processed by the ultrasound machine's computer to measure the time it takes for sound waves to travel from the transducer to the tissues and back. The computer analyzes these signals and constructs an image based on the pattern and strength of the returning echoes.

7. Image visualization: The generated image is displayed on a monitor. Different shades of gray are used to represent different tissue densities, providing a visual representation of the body part being examined.

By analyzing these images, medical professionals can assess the size, position, and overall health of a developing fetus, as well as detect any abnormalities or potential complications.

It's important to note that while this explanation provides a general overview, the technology and techniques behind ultrasonography can vary in more advanced systems.