Hypofractionated irradiation of the solid form of Ehrlich ascites carcinoma in mice by a thin scanning proton beam
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The dynamics of the growth of Ehrlich ascites carcinoma in mice of the SHK line exposed to hypofractionated high-dose irradiation by a thin scanning proton beam has been analyzed for different irradiation volumes and different time intervals (from 4 to 24 hours) between two 30-Gy fractions. Irradiation of the gross tumor volume and the planned target volume was performed within the Bragg peak; the energy of protons at the outlet of the accelerator ranged from 85 to 100 MeV. Hypofractionated irradiation of the gross tumor volume of Ehrlich ascites carcinoma resulted in a more pronounced antitumor effect than the irradiation of the planned target volume. The effect did not depend on the interval between the irradiation episodes.
Keywordshypofractionation scanning pencil beam proton therapy Ehrlich ascites carcinoma mice
gross tumor volume
planned target volume
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