| 摘要 |
FIELD: medicine. ^ SUBSTANCE: invention refers to medical equipment, namely to electron beam and X-ray beam generators for interstitial and intraoperative radiation therapy. The device is designed to supply a total exposure for 1 minute of length of the operation at repetition frequency 1 Hz and to supply single doses 10 Gy at ultra-short length of a single dose in 30 ns, and accommodates a power supply, a pulsed electron-emitting source comprising a plasma focus head with a vacuum chamber equipped with a pair of cylindrical coaxial electrodes and a means for feeding at least one chemically active gas into the chamber, an electric circuit comprising a capacitor bank with high-speed switches and conductors connected to the electrodes, and an electron directing element coaxial to said electrodes, extended from said emitting source head adjoining a radiation section, as well as a reinforced platform with high-voltage cables and head suspension and relocation brackets, with total capacitor bank capacity making 44.4 mcF, the power supply actuated both in single-pulse, and in cyclic duties, in the latter case timing of the trigger unit of the high-speed switches is used. ^ EFFECT: use of the invention allows to simplify control and to limit risk for patients when procedure is performed. ^ 19 cl, 8 dwg |
