Presentation on theme: "X-Rays The technology behind them!. The EM used The EM used for x ray machines is x-rays. X-rays are a type of electromagnetic radiation X-rays are basically."— Presentation transcript:
The EM used The EM used for x ray machines is x-rays. X-rays are a type of electromagnetic radiation X-rays are basically the same thing as visible light rays. Both are wavelike forms of electromagnetic energy carried by particles called photons. The difference between X-rays and visible light rays is the energy level of the individual photons. This is also expressed as the wavelength of the rays.
How an X-ray machine works The heart of an X-ray machine is an electrode pair -- a cathode and an anode -- that sits inside a glass vacuum tube. The cathode is a heated filament, like you might find in an older fluorescent lamp. The machine passes current through the filament, heating it up. The heat sputters electrons off of the filament surface. The positively-charged anode, a flat disc made of tungsten, draws the electrons across the tube.
X-rays in the medical field X-ray technology lets doctors see straight through human tissue to examine broken bones, cavities and swallowed objects with extraordinary ease. Modified X-ray procedures can be used to examine softer tissue, such as the lungs, blood vessels or the intestines.
How x-rays are used in airports After the X-rays pass through the item, they are picked up by a detector. This detector then passes the X-rays on to a filter, which blocks out the lower-energy X-rays. The remaining high-energy X-rays hit a second detector. A computer circuit compares the pick-ups of the two detectors to better represent low- energy objects, such as most organic materials.
How dentists use x-rays Intraoral X-rays are the most common type of X- ray taken. You've probably had many sets of these X-rays taken in your life already. These X-rays provide a lot of detail and allow your dentist to find caries, check the health of the tooth root and bone surrounding the tooth, check the status of developing teeth, and monitor the general health of your teeth and jawbone.
How dentists use x-rays Extra oral X-rays show teeth, but their main focus is the jaw and skull. These X-rays do not provide the detail found with intraoral X-rays. Instead, extra oral X-rays are used to look for impacted teeth, monitor growth and development of the jaws and to identify potential problems between teeth and jaw and the TMJ joint or other bones of the face.
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