آخـر مواضيع الملتقى
| ||LinkBack||أدوات الموضوع||انواع عرض الموضوع|
The idea of producing X-ray
Electrode system is the heart of the production of X-ray, which consists of anode and cathode inside the glass pipe circle of air. Cathode consists of the wick, such as heating in the electric lamp, when it passes through the wick Altaer electrical temperature gradually rises until it reaches the temperature that would enable the wick of the electron emission from the surface. Anode is a disc of tungsten loaded cargo positive work to bring the liberated electrons from the cathode.
The voltage applied between the cathode and high anode helps to accelerate the electrons to start strongly in the anode Athah. When the electrons hit the anode, Bdhirat material (tungsten), the electron collision is carried out on tungsten atoms in orbits close to the internal nucleus of the atom to which the capacity significantly. Electron in orbit is the highest bridge the gap that has taken place than a starting point for a Photon energy difference between the levels. Because the difference in the levels of the large photon energy output would be X-ray Photon.
Free electrons hit the seeds of tungsten are free electrons in the orbits of the Interior .. Orbits of the electrons move to higher output and leisure Tmlye Foton is a difference of energy.
Can we get the X-ray photons in another way, without crashing into a free-electron atom, including, as in the following case: When approaching an accelerated free electrons near the nucleus of the anode, they are attracted to it by the force of Coolum, electrical, because the load and the positive nucleus with negative electrons from the electron Vtnhrv track which leads to a change in the energy of movement, and as X-ray photons with energy difference of deviation before and after the next kernel. This way, the phenomenon known as brake breaking action and the phenomenon known in German Bermstrahlainj Bremsstrahlung is the scientific name for the phenomenon of X-ray production of the brakes on any of electrons passing through the vicinity of nuclei at the heavy elements that constitute the anode material.
Free electrons are attracted to the nucleus of atoms of tungsten, and the closer those Alketronat accelerated from the nucleus, they deviate from the track, resulting in a change in the capacity Vtntaleg X-ray photons.
We can deduce from the above that the corn is responsible for the production of X-ray, but is different in the case of visible radiation as it orbits of electrons is a component of the internal product of the X-ray radiation while in the video is to raise external electrons orbit.
The production of X-ray tubes
The collision between the accelerated electrons and the anode material to generate x-rays to generate a lot of heat. Motor used for that to work on a rolling disk anode was to ensure that different regions of the anode material of the electron beam at a time, which is protected from melting by the ongoing collision and the resulting heat.
Barriers used for the prevention of lead X-ray emission from the exit and in all directions. Is determined by performing X-rays through a window at the barriers and open the exit by passing through several filters before crashing to the patient's body to be photographed.
To demonstrate a camera to record the X-ray photons, which has gone through the patient's body and used film cameras, especially those sensitive to X-ray using the same technology used in the regular film cameras used in imaging the normal visible light-sensitive.
Be retained as in the form of Nejatev are examined under the light of the image shown white areas such as X-ray absorbed by the bones and solids in the picture shows a white areas that had not absorb X-rays, such as skin, muscle and blood vessels appear dark in the picture.
Variation of Contrast Media
In the form of X-ray of the patient's body does not show any effects of the blood vessels or of the membership, such as the liver or the stomach or intestine, and to demonstrate any of those members of the X-ray image in order to diagnose the disease-ray specialist on the patient's body with injected contrast material contrast media such as barium Albarim .
This consists of variation of liquid absorbs the X-ray efficiency is higher than the surrounding tissue when injected in the patient's intravenous fluid into the blood vessels capable of absorbing X-rays, resulting in a picture of the blood vessels on the X-ray film. The so-called imaging contrast injection with the patient Balvruskubi fluoroscopy.
Is Alvruskubi of techniques that use X-ray imaging contrast material flow through the body through specific periods of time the patient is injected with a contrast and then applied to the patient doses of X-ray at time intervals to monitor the flow of material and flow through the patient's body image on the screen shows the flow of phosphorus contrast material through the body and the doctor decides he wants the picture taken at specific time periods for the diagnosis later.
Nawaf EL ATAWI
Hospital, King Khaldalmdni Tabuk
|مواقع النشر (المفضلة)|
|الكلمات الدليلية (Tags)|
|idea, producing, the, xray|
|أدوات الموضوع||إبحث في الموضوع|
|انواع عرض الموضوع|