Panoramic radiograph

Called A panoramic radiograph (OPT or OPG colloquially, rare OPTG ), also panoramic radiograph (PSA ) is an originally introduced by the company Palomex, Finland and so-called by the producer of a dental X-ray. She is now a standard method of dental radiography and allows a powerful diagnostic X-ray image of the upper and lower jaws of the people. It will be shown all of the teeth, the adjacent areas of the jaw, both jaw joints as well as the right and left maxillary sinus. The OPT also covers the sides of the neck area, so that even artery calcification of the large carotid arteries are visible. The middle section of the recording is a procedurally -related projection of the cervical spine partially shaded ( indistinct ).

The OPT device

The recording device, Orthopantomograph or OPT device called used in medicine widely used X-ray technology, the X-ray tomography: The recording unit is running at a film cassette or a digital line scan camera while recording from the left rear Coming to the patient's face around and describes in thus, slightly more than a semicircle. These synchronous travels around the X-ray tube head from right to left across the back of head. The X-ray tube is so constructed that it emits a wedge-shaped, vertical beam which widens from about 0.25 mm to about 3 mm. This beam shines through the pine sections, and finally passes through a vertical slit in one of the film cassette upstream shielding made ​​of lead. Behind it is the fixed line camera and moves the cartridge in its direction of travel slightly slower than the rest of the apparatus, which is recorded on the film, the image vertical strips for vertical stripes. At the end of travel, the cassette is finally retarded around its own length behind the carrier, so the entire length is exposed through the gap. The individual lines of the line camera alternatively be assembled into a digital OPT. Thus, it is an imaging where no plane but a curved, approximately half elliptical surface is projected onto the film plane.

Radiation exposure

The radiation exposure when shooting is relatively low and similar to that of which you are exposed as a result of cosmic radiation in the course of a four hour flight.