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Biomedical subjects

R S Mil'shteĭn

Publications and source records attributed to R S Mil'shteĭn.

At least 19 recordsLinked to original sources
PubMed1989

[Optimal conditions for irradiating central cancer of the lung using high-energy photon beams].

The authors describe optimum plans of irradiation of central lung cancer of patients with different stature in a restricted number of radiation directions and without such restrictions. The recommendations obtained are compared with routine methods of irradiation. The description of a single dose field by transformed curves of axial distribution, taking into account the heterogeneity of a medium, are used in computation.

Humans↗
PubMed1988

[Calculation of dose fields of braking irradiation in heterogenic media by a method of the transformation of axial distribution].

Analysis of dose fields in a heterogeneous tissue equivalent medium has shown that dose distributions have radial symmetry and can be described by a curve of axial distribution with renormalization of maximum ionization depth. A method of the calculation of a dose field in a heterogeneous medium using the principle of radial symmetry is presented.

Algorithms↗
PubMed1986

[Treatment of uterine cancer using braking radiation (25 MeV)].

The method of treatment of uterine cancer by the brake irradiation of 25 MeV betatron using original devices which promote forming therapeutic figured bunches is presented. The binding of the protective blocks with a special adjusting frame within the aperture of the diaphragm provided for low relative entering dose which is the advantage of high energy irradiation bunch. The use of the forming devices makes it possible to practice individual treatment and decrease the levels of irradiation doses for intact organs and tissues.

Electrons↗
PubMed1984

[Combined treatment of breast cancer using bremsstrahlung and electron radiation].

Combined therapy with accelerator high-energy radiations was applied to 116 patients with breast cancer, Stages II-III. At the beginning the patients received preoperative irradiation of the affected breast and ipsilateral axillary zone with braking irradiation at 25 MeV. The summary focal dose of 20 Gy was delivered with 5 daily fractions, 4 Gy each. This was followed by radical mastectomy. In the postoperative period irradiation of the supraclavicular and parasternal zones on the ipsilateral side with electron radiation at 10-22 McV was used when indicated. The summary focal dose of 44-50 Gy was provided in 22-25 fractions. Local recurrences developed in 2.6% of the cases. No regional recurrences and metastases to the supraclavicular lymph nodes were noted. No marked reactions and complications were revealed.

Axilla↗