Release date: 2016-11-10
Misunderstanding 1: Radiation therapy is too harmful to the human body and cannot be done
Many people think that radiotherapy will kill good and bad cells together, and the side effects are too big to accelerate the deterioration of the disease.
Liu Yingjie said that in fact, radiation therapy is radiation (mainly X-ray, γ-ray and β-ray). Like CT examination, the radiation passes through people's body, and the human body does not have any feeling. The side effects of radiotherapy are generally small compared with chemotherapy. Except for some patients who need the irradiation of the stomach, most people do not have any feeling, and the effect is often no less than surgery. In the late stage, the lesions that cannot be completely removed, the efficacy of radiotherapy is better than surgery. Usually ordinary radiotherapy may cause skin pigmentation, precise radiotherapy of deep tissue can leave no trace, and the tumor shrinks or disappears.
Myth 2: Radiation therapy has a great influence on immunity, and the body has no immunity after irradiation.
Radiation therapy may inhibit cells that grow faster in the body, such as bone marrow cells, leading to a decrease in white blood cells and thrombocytopenia, but it is usually much weaker than chemotherapy. The whole treatment is as long as the tumor is not very extensive, or multiple sites, multiple radiotherapy White blood cells are not affected or have only a slight effect. On the contrary, after radiotherapy, tumor cells are apoptotic, necrotic or inhibited, but they do not completely disappear. They no longer multiply and grow in the body for a long time. Radiotherapy can lead to the exposure of tumor cell surface antigens, possibly activating immune cells against tumors carrying the same antigen. The cell has an immunopotentiating effect. After tumor resection, the metastases may accelerate in a short period of time, and the above-mentioned causes are not changed after the radiotherapy. Therefore, the idea that radiotherapy is harmful to the body's immunity is very incomplete and even wrong.
Myth 3: Radiation therapy is the same treatment
Radiation therapy is actually a general term for a large class of treatment. For example, the 152th Hospital of the People's Liberation Army has three radiotherapy equipment: the German Siemens linear accelerator, the volumetric rotary intensity-modulated linear accelerator (VMAT) produced by the British Yikeda Company, and the fifth-generation gamma knife-gyro knife independently developed by China. These three devices can perform 10 different radiotherapy methods. According to the size, location, number, distribution form, pathological type and degree of differentiation of the tumor, the appropriate treatment method is selected. For example, the Volume Rotational Intensity Linear Accelerator (VMAT), which has 6 MV low energy, 15 MV high energy two-speed X-ray, can be used for different deep exposures to obese patients. Even for ordinary radiation therapy, X-ray irradiation or electron beam irradiation may be selected according to the depth and size of the tumor. X-ray irradiation may use 6-speed electron beam 6MV or 15MV different energy X-ray treatment, and skin radiation therapy may use 4MV, 6MV. , 9MV, 12MV, 18MV, 25MV electronic line illumination, different ray energy, which is not available in other medical institutions in southwestern Henan. At the same time, according to the shape of the field, you can choose ordinary field irradiation, irregular field irradiation, or even more complicated two-dimensional conformal radiotherapy. The mode and type of radiation can also be X-knife treatment, gamma (gamma) knife treatment, conformal radiotherapy, intensity-modulated radiotherapy, volumetric rotational intensity-modulated radiotherapy, simple arc irradiation, radioactive seed implantation radiotherapy, and the like.
In short, radiotherapy is not a simple treatment, and it is necessary to choose a suitable radiotherapy method according to the patient's condition.
Myth 4: The brain is the "Command", with many functions, the organization is too soft, and can not be treated with radiation.
Liu Yingjie said that this is part of the understanding of chemotherapy doctors in hospitals without radiotherapy equipment. In fact, many tumor radiotherapy effects in the brain are better, and the preservation of brain function is also obvious. In many cases, metastatic brain tumors on one side may cause lateral body or limb dysfunction. Many patients may resume walking, language recovery, and recovery of consciousness after radiotherapy. In the spinal cord, hemiplegia, even in early hemiplegia, only 20%-40% of patients can improve or disappear. However, the second part of the brain in the same part of the radiotherapy, the effect is significantly reduced, side effects increased significantly.
Source: Pingdingshan News Network
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