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X-Ray
Invented by Wilhelm Conrad Röntgen in 1895, X-ray imaging is used in hospitals to detect fractures to bone, as well as abnormalities to soft tissues.
1,826 Questions
Thomson conducted the experiment.
The cathode ray tube experiment provided the first evidence for subatomic particles or, more specifically, electrons.
For a more in-depth explanation: when Thomson conducted this experiment, he set up the cathode ray tube, which sent a beam across the tube (which we know now is made of electrons, but at the time no one knew what an electron was or how they related to electricity). He then brought a magnet near the tube and found that it repelled the beam in the opposite direction, in the same way that a wire carrying a current was deflected by a magnet.Therefore, he concluded that whatever particle was part of the beam, it must be negatively charged.
Moreover, Thomson did this experiment with different metals at the cathode. We know that any metal is going to emit electrons to create the ray, but again, back then they didn't know what electrons were. No one had yet managed to disprove the theory that atoms were indivisible. But by using the different metals and getting the same results, Thomson's theory suggested that all atoms had the exact same negatively charged particles inside them, which is exactly what we know today.
How do x rays see through things?
Xrays pass through most substinces. Various detectors can be used to detect the ammount of xrays that are sent from one side verses what is picked up on the other side. The difference can give you information about an object.
Xray radiation is created when high speed electrons hit a solid object. Basically high voltage electricity (usually 40,000 - 120,00 volts) is pushed across a gap from a cathode to an anode. The Anode is usually made of tungsten or other materials that can withstand high temperatures. The anode is usually spinning so that the target is not hit in the same spot over and over again, this allows the anode to last longer.
When the high voltage hits the target it releases xray radiation. Xray radiation is invisible, but it causes some elements to glow. The best used today are rare earth elements like yttrium and gadolinium.
The xrays travel through the patient's body and hit a film cassette that is treated with some of these rare earth elements and it glows wherever the xrays reach it. Some of your body blocks the xrays so the screen only glows in areas that is not entirely blocked. The thicker and more dense the body part the more xrays are blocked. Bone is very dense so it blocks more xrays than most any other tissue, so bones show up as clear areas on the film. The film is placed between these screens inside the cassette safe from regular light. So that the only light that reaches this film is the light created by the glowing elements bombarded by xray radiation.
The glowing of the elements bombarded by xrays causes the film to turn black and or grey depending on the amount of xrays that are blocked.
Modern xray machines have cassettes that use different phosphorus materials that keep a temporary image on the cassette then the cassette is read by a machine and creates a digital image. There is no film in these type of cassettes.
This is done because more and more facilities are not using film anymore. Storing xrays is cheaper and more efficient on computer hard drives as digital xrays. Because of the digital storage of xrays some xray machines do not use cassettes at all, only digital readers.
Can a pill in the lungs be seen from a chest X-ray?
It would depend on several factors. The Physical size of the person, The size of the pill, the radiographic technique used, the material and density of the pill, and finally where in the lung it is. For instance, bone, consisting primarily of calcium, shows very clearly on x-rays, where small changes in flesh density do not, and air in lungs are the least resistive to the x-ray beam. This is due to bone absorbing the incident x-rays, where flesh is more likely to pass the radiation unatenuated, given sufficient engery of the x-ray photon. Given that the pill is not lodged in the lung behind a rib, there is a good chance it could be seen. Even a better chance it could be seen in a slice of a CT scan. Hope this helps. My background is 25 years experience as an x-ray field service engineer, where details such as what you described is the resolution where most high end x-ray equipment strive to image. X-rays, however, are still random, and there is only so much enhancement and filtering that can be made to an image, while keeping real data. Good luck!
Why do you think an x ray useful to diagnose a fracture but not a sprain?
Typically it is easier to see dense things like bone on an x-ray. X-rays are not ideal for examining soft tissue.
Can airport xray machines see diamonds?
Yes an airport xray will pick up a diamond or multiple. ( source airport worker )
It should be easily accessible to all x-ray room and it should be at the centre.
How do you clean x-ray contrast off lead aprons?
Contrast Media can easily removed with just water at a normal temprature. Some aprons are sensitive to hot water.Betadine stains are hard to go off !
Yes. Your bone doesn't actually "knit" back together, but grows new bone over the fracture. The calcification of this bone (how strong it is) can be aged.
How to make X Ray glasses at home?
easy there are camera's that allow you to see through certain fabrics or you can put one of those x-ray radiation blocking sheets over an object and build a x-ray machine or buy one but x-ray glasses that don't give of radiation are ahead of our time
How do you tell the difference between maxillary and mandibular X-rays?
1. Mandibular bone is more dense, maxilla is less dense.
2. Maxillary roots are more tapered than mandibular teeth.
3. In maxilla sinuses are present that may even be visible in some Periapical xrays.
4. Teeth anatomy or maxillary and mandibular teeth is different.
5. Number of roots in the posterior teeth vary in both the jaws.
Why do hospitals refuse to let patients see their own x-rays?
I have never had a hospital refuse to let me see my own x-rays. Perhaps you have not asked the right person. Have your doctor request a copy and show them to you.
Can airport x ray machine spot five tablets of ecstasy?
yes of course it can it can spot a needle in 12 haystacks. why do yopu ask are you going to try it
No, people can not have X-ray vision. Humans do not have the ability to see through objects like an x-ray machine does. There use to be glasses that were marketed as giving you X-ray vision but they never truly worked.
Not naturally, no.
When did they stop using thorium dioxide for x-ray?
Simple, after 1950: to avoid any internal irradiation with alpha particles.
Why my chest X-Ray show Inflammation even if I do not have any pain?
Inflammation does not always result in pain.
What the different between x-ray view and projection?
view is from the beam while projaction is image from patient
What is the cassette used for in X-Rays?
It is used to take the image. The cassette stores the image.
What are some mechanical wave?
Mechanical wave needs a medium to travel. Examples :- Sound Wave, Seismic Wave etc.
