[en] The method of patient setting and radiation beam centring in radiotherapy of malignant tumors by alignment of central sagittal plane of the patient with longitudinal line of the table and radiation beam guidance onto the centring point is described. Such method permits to reduce the time of patient setting and increase the efficiency of radiotherapy of malignanttumors by higher accuracy in radiation beam guidance, decreases medical personnel radiation load

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[en] The paper is concerned with the prblems of obtaining clinicodiagnostic and topometric information and its preparation for further computer-assisted use. Topometric schemes were made in the frontal, saggital, and a series of transversal planes which permit assessment of the nature of ionizing radiation energy distribution in the main projection area of normal organs involved in the irradiated zone as well as within the limits of extended targets on the basis of optimized computer-assisted total dose distribution at the level of the tumor center. A dosimetric plan is regarded as a normal one if it meets the requirements of quality at all studied levels

[en] The comparative analysis of efficacy of radiation complications treatment radiation was performed at the rotation gamma-therapy of carcinoma of the middle third of esophagus in 60 patients, of whom 29 were exposed to irradiation with an open field and 31 with the use of raster according to the technique elaborated. The studies showed that at the rotation gamma therapy with a raster the number of radiation reactions in the esophagus, cardiovascular system and lungs considerably decreased. The immediate results of the treatment were not inferior to those obtained in irradiation with an open field

[en] Two methods of radiotherapy of rectal tumor are presented. Both the dosage distribution in each of them, and the reasons for radiotherapy employment by means of a native hose device ''AGAT-B'' are provided. The methods of gamma-therapy have been tried on 83 patients. The results obtained were analyzed with reference to 2- and 3-year survival rates. The character and manifestations of local radiation effects are discussed. It is thus concluded that radiotherapy of inoperable rectal tumor provides for a prolonged therapeutic effect. Moreover, radiation rectites, which are most manifest in combined radiotherapy are ameanable by drug treatment and do not significantly aggravate the patients' general status

[en] Documentation set is developed in which a united symbolics of parameters in the apparatus-patient system is accepted. A program for a computer control is developed on the basis of the above documentation. It exercises the automatized direction of the radiation beam on the centration point and the realization of the dosimetric radiation plan. The technological scheme of preparing for the automatized control over the irradiation process can be successfully used when compiling and realizing the irradiation program on all existing types of tele-gamma-therapeutic apparatuses with manual control

[en] During the examination of 170 patients with corpus and cervix uteri cancer it has been established that simulators give an opportunity to define orienting points in the same position, as that used during irradiation, to obtain all necessary topometric data for preparing anatomotopographic maps and calculating with their help irradiation programs, and simulate geometric conditions of an irradiation program

[en] A clinical and dosimetric analysis was made of the results of gamma-teletherapy by split course moving and static techniques in 88 patients with esophageal cancer. It has been established that immediate and early results of the application of both techniques fo not differ greatly. Differences of the dose distribution in static and moving gamma-teletherapy determine the frequency and rate of radiation reactions in the extratumoral irradiated area. Blood and myocardial alterations are more frequently observed in 3-field daily irradiation, and reactions of the esophageal mucosal membrane are observed during forward rotation

No abstract available