Choose language:
» Personal Loan No Credit Check, Online Economics » Diagnostics » Picture-giving procedure » Roentgen
The word Roentgen (after the physicist William Conrad Roentgen) stands for
In the medicine that serves Roentgen for the statement of anomalies in the body, those in connection with symptoms, indications and different investigations a diagnosis possibly makes possible (Roentgen diagnostics). Those differently seal fabrics of the human (or animal) body absorb the X-ray differently strongly, so that one reaches an illustration of the inner body (shading and clarification). The procedure is applied for example frequently with suspicion to a fracture: if the radiograph shows an interruption of the continuity of the bone, the suspicion is confirmed.
Frequently during or before the x-ray examination contrast means are given to the patient. Some structures, which cannot be defined normally, can be emphasized in such a way. Partially also the function of an organ system can be represented, so for instance in the Urografie with contrast means. Depending upon question different substances and Darreichungsformen offer themselves.
In Germany patients can require such a passport in case of an x-ray examination of the treating physician, information such as date and illuminated body region into a Roentgen passport register or be issued let themselves.
| Historical admission of a hand with ring (Roentgen, 23 January 1896) | Radiograph of a broken lower arm with Mark nail in the inch | Radiograph of a heel rubble german type with Verplattung | Radiograph of a radius rubble german type with Verplattung and Fixateur external |
| A modern admission of a left hand with 6 fingers (Polydaktylie) | Radiograph of a male head | Roentgen of the Kiefer with the dentist | Radiograph of a thorax with Bronchialkarzinom |
Further applications one finds when X-raying in testing of materials by Roentgen can one in the process of the X-ray inspection of objects on tears and cavities on the inside examine.
Ever more frequently large chains require a better detection from foreign bodies of the food manufacturers to the increase of the product quality. After the Metalldetektor was in the last years the means of the choice, are used now always frequent Roentgen systems (X-ray). These Roentgen systems consist on the one hand of the well-known Roentgen system (tube/gunsight and receiver) as well as of an advanced computer-assisted image processing with controlling equipment. That is, the radiograph of the respective food is examined regarding possible impurities (contamination) by means of special computer programs. If the radiograph analysis should result in the fact that a food is contaminated is immediately communicated then to the attached controlling equipment that this food is to be controlled. It lands in the trash can.
However straight are to be overcome at the beginning of the employment of such Roentgen systems in food industry hurdles. The fear of a load by possible radiation is often large and requires a clearing-up. Apart from Roentgen systems, the food illuminates the x-ray examination absolute around it to make more durable, is regarding possible contamination without any effect on the food. Roentgen has here neither a durable-making still another destructive effect. Which is the security of the Roentgen system for the user remains. Since Roentgen in Germany is in principle forbidden and only under permission and/or indicate-requiring editions can be made possible, the hurdles for possible injuries are very high. Last end hangs respective security of the operator and the acquired system off (e.g. see DYLOG, ANRITSU). Forgotten one should not however that medical Roentgen and also the use with flies (in normal height) temporarly far larger loads with itself bring than it is with a Roentgen system for quality assurance the case. Who in damp cellars of houses or in water companies is gets usually higher excursions on the measuring instrument (dosimeter) than before that switched on Roentgen system. Do not forget - we have radiation always and everywhere. She comes from the ground as also from space to us and is along-measured.
As the latter a few words to the detection ability. One must say completely clearly, a Roentgen system can metallic and non-metallic contamination detect, however to not all. Roentgen is to be able to recognize the only possibility at the today's time (2005) over as much as possible and different small contamination in food. To assume, the product is after the investigation to 100% contamination-free is however wrong. It is safe that in the coming years by means of better technology the detection ability can be still further increased. One will be able to however never find everything. That is connected primarily with it that the more near "the Roentgen effects lie together "from contamination and the actual product, it the image-processing system also all the heavier falls between both to differentiate (see Hounsfield scale). In the so-called "Hounsfield scale "Roentgen effects of most different materials are listed. The closer the respective materials in this list are, all the more badly are able a Roentgen detector them to differentiate between (example: Meat and fat). However if the difference is large as e.g. between a piece of cheese (packs or not packed) and a small stone or iron or a piece of aluminum, then it falls the Roentgen detector particularly easily the impurities in the cheese to recognize and segregate.
In the archaeology the radiography for example used for the transillumination of mummies, whose volume acting is not to be destroyed.
Kurt Wehlte used for the first time the Roentgen technology, in order to make the different layers of the screen layout visible with paintings. It created the radiograph place for painting investigation in Berlin
In January 2003 American and Japanese astronomer succeeded to Roentgen of the gas covering of the Saturnmondes titanium for the first time. This admission became possible by the first titanium transit of the cancer fog since beginning of the observation; the next conjunction of this kind is expected in the year 2267.
By depressing the diffraction of X-ray with through a substance sample measures, the crystal structure of substances can be cleared up. Molecules can be visualized in such a way. With biological molecules such as DNA, RNA and proteins the structure permits conclusions on the function, therefore molecular biologists particularly often fall back to the x-ray structure analysis. The individual procedures with this procedure are described in the articles Kristallografie and crystal analysis.
Apart from the Roentgen diffraction also the Roentgen absorption spectroscopy is used as procedure for the structure clearing-up. The method is not limited to crystalline samples, however it is suitable only for the clearing-up by close structures. In particular within the range of biological samples the Roentgen absorption spectroscopy is used increasingly for the purposeful clearing-up of active centers by enzymes.
Around the radiograph to make visible there are the following possibilities:
We found here 6 articles.
D» Department | R» Roentgen memory foil» Roentgen » Radiograph | S» Shading» Solid detector |
Index | Privacy | Terms Of Use | Sitemap | Feedback
Printer Friendly Format
Bookmark this page
Back to "Picture-giving procedure"
Back to top