[Morphometric characteristics of the muscles of the lower extremities during movement in the human]. / Morfometricheskaia kharakteristika myshts nizhnikh konechnostei pri dvizheniiakh cheloveka.

Systemic investigation of the mechanisms that control locomotions in the man provides elaboration of some problems concerning properties and construction of the locomotory apparatus, especially morphometric characteristics of the muscles--length and shoulder of the thrust force. Various methods for determining length and shoulder of the thrust force are considered. The first method is based on substituting the muscles for mathematical or mechanical model. The second method makes it possible to define the degree of the muscle elongation by means of measuring the distance between the ends of the sectioned tendon; it includes regression equations, connecting a relative elongation of the muscles with the angle change in the joints. As a result of perfection of the previously known methods, mathematical models are made, owing to them it is possible to calculate morphometric characteristics of 8 muscles in the lower extremities using computer facilities. As an example, results of calculations, by means of various methods, morphometric characteristics of the gastrocnemius muscle are presented. They are obtained at registration of the kinematics of the run with a maximal speed. Satisfactive coincidence of the results is obtained.

[Radiotherapy in the combined treatment of malignant tumors of the orbit in children]. / Sochetannaia luchevaia terapiia v kombinirovannom lechenii zlokachestvennykh opukholei orbity u detei.

A study of the long-term results of treatment of 66 children with eye socket tumors has shown that use of a dose over 50 Gy in the postoperative period causes the development of radiation injuries of the facial skeleton and healthy eye. To lessen radiation exposure of the healthy organs and tissues it is advised that intracavitary radiotherapy should be used after eye socket exenteration. The use of this method makes it possible to deliver a necessary dose of irradiation to a focus of lesion with a 2-fold decrease in radiation exposure of the surrounding tissue.

[Methods of dose distribution formation during intracavitary gamma therapy]. / Metody formirovaniia doznykh raspredelenii pri vnutripolostnoi gamma-terapii.

The paper is concerned with the comparison and discussion of the characteristics of dose distributions formed by the linear and point sources of gamma-radiation with radionuclides 60Co, 137Cs and 192Ir using different methods of intracavitary irradiation. Insignificant influence of the energy of the radiation of these sources on differences in a dose and distance decrease was shown. Recommendations for the choice of a rational method of the dose distribution formation for intracavitary gamma-therapy were issued.

[Equipping radiological departments with closed radiation sources]. / Tekhnicheskoe osnashchenie radiologicheskikh otdelenii zakrytykh istochnikov izlucheniia.

Now, medical institutions are busy with the reconstruction of standard radiological compartments with the purpose to adopt and introduce into practice the intracavitary gamma-therapy method performed by means of apparatus AgammaAT-B. The article gives a well-founded technological explanation of the planning decision and allocation of AgammaAT-B together with protective technological equipment for operation with closed radioactive sources in the compartments built by projects that did not foresee a space for this apparatus.

[Nonstandard equipment for intracavity gamma-therapy cabinets]. / Nestandartnoe oborudovanie dlia kabinetov vnutripolostnoi gamma-terapii.

Carrying out the intracavitary radiotherapy requires strict control over accurate disposition of endostates relative to a pathological focus and checking the proper position of the patient during the whole irradiation course. For this purpose, a double-tube X-ray localizer, based on the X-ray apparatus RUM-10 and a new therapeutic table were designed and accepted for clinical practice. The table construction ensures the localizer application in both the roentgenographic and roentgenoscopic modes and permits to employ a TV-system with amplification of X-ray patterns.

[Determination of the law of radiation source motion in intracavitary moving and multipositional irradiation]. / K opredeleniiu zakona peremeshcheniia istochnika izlucheniia pri vnutripolostnom podvizhnom i polipozitsionnom obluchenii.

The intracavital moving and multipositional irradiation with portable sources in gamma-therapy of extended pathologic foci offers more possibilities for the formation of dose distribution in accordance with the patient's individual features. A method is proposed to calculate the movement law for the point and linear irradiation sources following the preset dose distribution. The authors show possible formation of dose fields with a practically rectilinear isodose portion.