在接受放疗时几乎所有接受放疗者均伴程度不同的副作用，其严重程度取决于照

Almost all patients receiving radiotherapy have side effects of varying degrees, the severity of which depends on the irradiation site, the size of the irradiation field, the dose per fraction, the total dose and the radiation energy. Sensitizing chemotherapeutic drugs such as doxorubicin and daunorubicin increase the sensitivity of radiotherapy and also increase the side effects. In addition, it is also related to the cell proliferation and renewal of organs and tissues. Cells with vigorous proliferation and low differentiation are sensitive to radiation. It is more sensitive, such as gastrointestinal mucosa, oral mucosa and bone marrow, etc., while other tissues and organs such as nerves, muscles, liver and kidney are not sensitive, and are much less damaged by radiation than sensitive tissues.

When receiving radiotherapy, almost all patients receiving radiotherapy are accompanied with side effects of different degrees. The severity depends on the irradiation site, the size of the irradiation field, each split dose, total dose and radiotherapy energy. Before radiotherapy or combined with chemotherapy at the same time, especially when chemotherapeutic drugs with radiosensitizing effect, such as adriamycin and daunorubicin, increase the sensitivity of radiotherapy and increase the side effects. In addition, It is also related to the cell proliferation and renewal of organs and tissues. Cells with strong proliferation and low differentiation are more sensitive to rays, such as gastrointestinal mucosa, oral mucosa and bone marrow, while other tissues and organs such as nerves, muscles, liver and kidney are not sensitive, and the damage caused by rays is much lighter than that of sensitive tissues.

When receiving radiotherapy, almost all the patients who receive radiotherapy are accompanied by different degrees of side effects, the severity of which depends on the irradiation site, irradiation field size, each divided dose, total dose and radiotherapy energy. Chemotherapy before or at the same time, especially when chemotherapy drugs with radiosensitizing effect such as adriamycin and daunorubicin are used, not only the sensitivity of radiotherapy is increased, but also the side effects are increased. Besides, it is also related to the cell proliferation and renewal of organs and tissues. Cells with exuberant proliferation and low differentiation degree are more sensitive to radiation, such as gastrointestinal mucosa, oral mucosa and bone marrow, while other tissues and organs such as nerves, muscles, liver and kidney are insensitive, and the damage caused by radiation is far less than that of sensitive tissues.