Study of Light Nuclei Activation in Human Blood During High-Energy Linear Accelerator (Linac) Radiation Therapyстатья
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Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
Аннотация:A series of experiments have been conducted to study the activation of certain chemical elements in venous human blood by bremsstrahlung during radiation therapy using a linear medical accelerator with a beam energy of 20 MeV. Under such operating conditions of the accelerator, a number of light elements in the patient’s blood are activated through (𝛾, n) reactions, resulting in the formation of positron-emitting radionuclides. For the first time, the positron activity of 11C, 13N, 15O, 30P, 34𝑚Cl and 38K has been measured in irradiated samples of human venous blood. It is concluded that the greatest contribution to the formation of the internal radiation dose by positron-emitting radionuclides is made by 15O, 34𝑚Cl and 38K.