Rentgenografiya

rentgenografiya
Fig. 1. Rentgenografiya: I - single-slot; II - multislot. 1 - the patient; 2 - rays; 3 - tape; 4 - single-slot lead grill; 4A - multislot lead bars; 5 - the direction of motion of the tape; 6 - direction grid.

Rentgenografiya - x-ray method of the study of the movements of the internal organs, carried out by the graphics Desk fluctuations in their paths, using rentgenografii. The principle of rentgenografii (Fig. 1) is that between the analyzed body and x-ray cassette placed lead grid, with one narrow slit (single-slot rentgenografiya) or more narrow slits, located at the same distance from each other (multislot rentgenografiya) so that the position of the cracks (or gaps) in the direction of movements of the investigated organ. If then power grid or film in uniform motion perpendicular to the position of the cracks (or gaps), and at the same time enable the x-ray tube, the film will curve movements of the investigated organ in the form of teeth roentgenogram. When moving film turns out so-called step, and when moving grid - continuous roentgenogram.
The most widely multislot continuous rentgenografiya, which is driven multislot grille, passing by rentgenografii distance equal to the interval between two gaps.
Rentgenology made in the form of a rigid framework, which is built multislot lead bars, driven by a mechanism consisting of a system of springs and oil absorber.
Kymograph equipped with an electric device that when connected to the remote control x-ray machine automatic switching on high voltage current through the x-ray tube at the beginning of the stroke lattice and off it at the end of the movement of the grating. In kilogrepe Jack is provided with slots for x-ray cassettes, as well as a device for suspension of kymograph directly to the tripod x-ray machine or - when large weight of kymograph to the rope attached to the ceiling of the x-ray Cabinet.


Fig. 2. General view multislot of rentgenografii to rentgenografii in a vertical or horizontal position of the grid.
rentgenology
Fig. 3. Multislot rentgenology with rotary circle.

In Fig. 2 presents rentgenology to rentgenografii in a horizontal or vertical position of the lattice, as in Fig. 3 - rentgenology with rotary circle, providing installation of a lattice in any position within 360 degrees.
For the production of roentgenogram roentgenologist should: set rentgenology instead of translucent screen, not including high voltage, align the x-ray tube so that its focus and the monitoring body coincided with the centre of kymograph; to establish given the doctor-radiologist speed lattice and the mode of operation of the x-ray apparatus; insert into kymograph x-ray cassette and include a work mechanism of rentgenografii.

Rentgenografiya (gr. kuma - wave) is a radiographic technique to study the movements of the internal organs. Rentgenografii produced by rentgenografii, the main part of which is the lead lattice consisting of stripes, separated by narrow slits (Fig. 1), or the grid, which has only one slit. X-rays that reaches the film only through a narrow slit, capture the contours of the body at different points of the movement, making it turns out the curve. For the record curve moves in a certain plane, the position of the cracks must be in the same direction, and the course of the lattice (or tapes) should be uniform and perpendicular to them.
There are several modifications of rentgenografii. The most common is multislot rentgenografiya (Shtumpf) with vertical movement of the lattice (Fig. 1, II). It roentgenogram saved continuous contours of the entire body, are represented in the form of curves movement.
For a more detailed study of the movement of the contour of any authority used the record of the movements of one point it using the single-slot grille. While in motion is not the grate, as if multislot kymography and the cartridge (Fig. 1, I).
Rentgenografiya is to study the movements of the esophagus, stomach, urinary tract, and so on, but the she found in the diagnosis of cardiovascular diseases. On multislot roentgenogram recorded simultaneously curves movements contours cardiovascular shadows across the Board. The alternation of the lateral and medial displacement circuit ventricle reflects diastolic expansion and systolic emptying cavity.
Curve movements ventricular usually consists of unimucronate fibrillation - two - or traversing teeth (Fig. 2), which makes possible the separation of these cavities by roentgenogram. Despite of complex movements produced by the heart in the act of Tzimtzum in education curve involved only the horizontal component of this movement, the amplitude curve quite well reflects the significant hemodynamic index - stroke volume of the heart. The decreased amplitude rentgenograficheskoe curve indicates the weakening of the function of the myocardium. In addition, at various diseases there are major changes coming in the form of curves (see cardiac Aneurysm, Heart attack, heart Defects). This explains the great importance of rentgenografii as methods of investigation of the function of the heart.
Rentgenografii applied also to the study of respiratory diseases of the lungs. Record curves movement of the diaphragm and rib produce at a horizontal course of the lattice and vertical gaps (Fig. 3), as the diaphragm and rib in the act of breathing undergo vertical offset. The decrease in the amplitude of the curves indicates a violation of respiratory function. Single-slot rentgenografiya (Fig. 4) facilitates the interpretation of the curves.

Fig. 1. Rentgenografiya (scheme): I - single-slot; II - multislot: 1 - body of the patient, 2 - rays, 3 - cassette, 4 - single-slot lead bars, 4A - multislot lead bars, 5 - direction of movement of a tape, 6 - direction grid.
Fig. 2. Roentgenogram heart: I - the scheme; II - a fragment of roentgenogram left ventricle and left atrial appendage.
Fig. 3. Multislot roentgenogram the diaphragm and rib. Slit grills are located vertically. Curve aperture normal.
Fig. 4. Single-slot roentgenogram aperture (vertical location of the gap), the small amplitude of teeth on the left indicates the constraint of respiratory movements.