PubMed Health⌕ Search

Biomedical subjects

I G Tarutin

Publications and source records attributed to I G Tarutin.

13 recordsLinked to original sources
PubMed1990

[20 years of experience in using high-energy electron accelerators].

The authors summed up their 20-year experience in the clinical use of a linear accelerator of electrons and a Siemens betatron (42 MeV) in the Research Institute of Oncology and Radiology, Ministry of Health of the Byelorussian SSR. Comparative advantages and shortcomings of both accelerators and the results of their technical modifications were considered. A section in the paper, devoted to the clinical aspects of tumor therapy, is concerned with the description of a number of methods of irradiation with various types of therapeutic beams, energies, field sizes, directions, various regimens of dose fractionation in time and irradiated volume. Long-term results of radiotherapy with accelerators were assessed and compared with the results of gamma-beam therapy on cobalt units. A conclusion was made that by 1991-2000 the Republic would need 10 medical accelerators.

Cobalt Radioisotopes↗
PubMed1989

[A catalog of computer programs for dosimetric irradiation planning].

A catalogue of computer-based programmes for dosimetric irradiation planning is described, that was elaborated according to the programme of the joint research of the CMEA-countries on field of radiotherapy of malignant tumors in the years 1983-1985. The catalogue includes 55 programmes from 11 research-centres in Hungary, the GDR, Poland, the USSR, and the CSSR: 23 programmes are determined for dosimetric planning of distant irradiation, 13 for intracavitary, 7 for interstitial, 6 for combined irradiation, and 6 for radiobiological planning. 26 programmes are used to optimize the dose fields by selection of adequate irradiation conditions. The catalogue includes 42 tables, which in details inform on possibilities of the programmes, on radiotherapeutic equipments, which were these programmes elaborated for, and on their clinical use. The problem is discussed to procure the catalogue.

Catalogs as Topic↗
PubMed1983

[Choice of the geometric parameters in optimizing the irradiation of patients with malignant neoplasms].

The authors have devised an algorithm and made a program of 2-stage optimization of irradiation conditions. At the 1st stage geometric parameters of irradiation are selected (field sizes, their number, a tangential shift of the field axis) proceeding from the peculiarities of the position of tumors, vital organs and tissues in space in respect to a source for each irradiation direction. Dose optimization is done at the 2nd stage. Doses are calculated on the basis of empirical expressions for the distribution of a dose of single gamma- and inhibition radiation beams up to 42 MEV Tissue inhomogeneity and surface curvature are taken into consideration by means of corrections.

Computers↗
PubMed1983

[Computerized program for calculating the dose distribution generated by intracavitary linear sources of gamma radiation].

One can achieve a high precision in the dosing of a session of intracavitary radiotherapy by rapid computerization of the treatment time that is necessary for obtaining a certain dose in a pathological focus taking account of an actual location of radiation sources in the process of irradiation. The authors have developed an algorithm and drawn up a program for computer ES-1022 to calculate a dose rate in any point of an irradiated volume from the system of gamma-radiation sources oriented arbitrarily in space. As part of a hard- and soft ware dosimetric complex, the above program provides for the calculation of the treatment time by a set dose; the time is necessary for supplying this dose to a tumor focus taking account of an actual location of radiation sources during a session of irradiation. The whole computer procedure from the moment of obtaining necessary anatomo-topographic information in the form of two x-ray pictures up to the output of an irradiation session time value and other information into the alpha-numeric printer takes 3-5 min. The program makes it possible to calculate dose distribution in any preset plane (up to 4 planes at a time) of an irradiated volume.

Brachytherapy↗
PubMed1983

[Soft- and hardware support for the setup for computer tracking of radiation teletherapy].

A hard and soft ware computer assisted complex has been worked out for gamma-beam therapy. The complex included all radiotherapeutic units, including a Siemens program controlled betatron with an energy of 42 MEV computer ES-1022, a Medigraf system of the processing of graphic information, a Mars-256 system for control over the homogeneity of distribution of dose rate on the field of irradiation and a package of mathematical programs to select a plan of irradiation of various tumor sites. The prospects of the utilization of such complexes in the dosimetric support of radiation therapy are discussed.

Computers↗