Wednesday, 11 April 2012
Bibliography
Davidson, T. (2012, January 05). X rays . Retrieved from http://www.healthofchildren.com/U-Z/X-Rays.html
March, A. (2006, November 01). New lung cancer screening tool. Retrieved from http://www.spacedaily.com/reports/New_Lung_Cancer_Screening_Tool_999.html
Harris, T. (n.d.). How x-rays work. Retrieved from http://science.howstuffworks.com/x-ray2.htm
National Aeronautics and Space Administration, Science Mission Directorate. (2010). X-Rays. RetrievedApril 10, 2012, from Mission:Science website:
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Faculty Members at the Yale University School of Medicine and G.S. Sharpe Communications, Inc. "Chapter 3 Diagnostic Imaging." The Patient's Guide to Medical Tests, 2nd ed. New York: Houghton Mifflin, 2002.
Limitations to using a x-ray
The limitations of using a x-ray is that an x-ray can expose you to radiation which is harmful to the human body. This is why when your at the dentist the put a vest on you to prevent allowing you to get radiation. Although one you do your body there not much to cover because you don't wont it to ruin the x-ray. As well as that it's not the best kind of device when you compare it to the other image methods. This means that it just gives the basic needs that you need but there are greater technologies that allow you to get a better picture.
Advantages of using an X-ray
A advantage to getting an X-ray is that it is able to produce a picture of any part of the body. So it is very helpful when you break a bone. They are also able to detect a problem that can be missed by a human eye. This becomes very helpful when it comes to tumors. Another reason is for financial reasons out of the other picture scanning machines (MRI or CT etc.) an x-ray is the cheapest one. It is also available as a portable device so that if there an emergency your still able to get one.
Fun fact
X-rays are not only used for medical reasons you can also find x-rays in airports to make sure all passengers are safe and so that no one is able to sneak on weapons on a plane.
How does it work?
How does a x-ray work?
The way an x- ray works is by using electromagnetic rays that penetrate the skin so the bones and tumors and muscles appear. This happens because when the x-rays hit the film they let out a light and since the muscles and bones and tumors all absorb a certain amount of light they all have different shadows allowing you to tell the different between them.
How does the x-ray machine work?
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The way a x-ray machine works is by using a electrode pair which is a cathode and an anode what happens with this is that it creates an electron beam that sits in a glass vacuum. Then the cathode is a heated filament the machine then passes current through it so it can create electrons with the positive charged disc of anode the voltage between the cathode and the anode are a huge difference which results in a x-ray.
The way an x- ray works is by using electromagnetic rays that penetrate the skin so the bones and tumors and muscles appear. This happens because when the x-rays hit the film they let out a light and since the muscles and bones and tumors all absorb a certain amount of light they all have different shadows allowing you to tell the different between them.
How does the x-ray machine work?
.jpg)
The way a x-ray machine works is by using a electrode pair which is a cathode and an anode what happens with this is that it creates an electron beam that sits in a glass vacuum. Then the cathode is a heated filament the machine then passes current through it so it can create electrons with the positive charged disc of anode the voltage between the cathode and the anode are a huge difference which results in a x-ray.
In this diagram I see the how the machine would work and how the electrons travel and become an x-ray.
a video about how the machine works: http://video.about.com/orthopedics/How-Does-an-X-Ray-Work--.htm
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