| 摘要 |
FIELD: medicine, namely, medicinal use of radiation, possible use for determining dose really received by pathologic focus having absorbed open radioactive nuclide. ^ SUBSTANCE: method for verification of dose during medicinal usage of open radioactive nuclides includes measuring intensiveness of radiation, with consideration of changes in radiation source activity in time, during that, by means of tissue-equivalent phantom, original intensiveness of radiation of open radionuclide is measured immediately prior to injecting it into organism of patient as well as average intensiveness of radiation from focuses having absorbed radionuclide, and after that individual relative dose of open radionuclide injected into pathologic focuses is computed using formula ^ where Dn/o - value of relative dose in %, Io - original intensiveness of radiation at the moment of injection of radionuclide, In - average intensiveness of radiation from focuses at day or hour of measurement of n, B0 and Bn - background values of radiation intensiveness at the moment of injection of radionuclide and at the day of measurement, respectively, k - coefficient of daily or hourly decomposition of radionuclide, n - number of days or hours having passed since the moment of injection of radionuclide. ^ EFFECT: invention allows verification of relative dose in most precise and individual manner. ^ 3 ex |
