[Comparative evaluation of different infusion medias used in therapy for neonatal hypovolemia].

The paper comparatively evaluates the efficiency of the use of physiological sodium chloride solution, freshly-frozen plasma, 6% and 10% solutions of hydroxyethyl starch to compensate for circulating blood volume deficit in 80 neonatal infants aged 1-3 days who had hypovolemia resulting from hemorrhage during labor or abdominal delivery. 6% and 10% solutions of hydroxyethyl starch were found to be the most effective agents for compensating for circulating plasma volume deficit. They rapidly eliminate circulating blood volume deficit, long maintain the stability of systemic and peripheral hemodynamic parameters.

[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.

[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.