When a person is exposed to radiation energy emitted by the radioactive material, it is known that exposure to radioactive radiation. A common example of such exposure to X-ray radiation is used in medicine. Small amounts of radiation exposure results in nausea and vomiting. The causes of exposure to radioactive radiation can be classified into two parts: internal and external. Radiation exposure is called external, when the ionizing radiation sources are present outside the body of the organism, which is exposed to a radioactive ray. Some very common examples of external exposure is when a person wears sealed sources of ionizing radiation in his pocket, a space traveler who is exposed to cosmic rays, a person with cancer undergoing radiation therapy or brachytherapy. internal radiation exposure occurs when the radioactive material into the body and the atoms are incorporated in the body.
Nuclear tests and nuclear weapons is a complex source of exposure to radioactive radiation. A person exposed to radioactive radiation of the nuclear tests receives three types of burns, namely, beta and gamma burns burns. Burns caused by infrared radiation. beta burns are caused by ionizing beta radiation. The gamma radiation from radioactive sources have high penetrating power and result in whole body irradiation.
The first symptoms of exposure to radioactive radiation are nausea and disorientation. However, the time of occurrence of these signals depends on the level of exposure. The effect of radiation on the body is depletion of platelets, which contributes to coágulo- training. The radiation also causes damage to the hair follicles; which leads to rapid hair loss. When a person is exposed to a very high dose of radioactive radiation, and the white blood cells and bone marrow damage. This increases the risk of infections (bacterial, viral and fungal).
The best way to minimize radiation exposure is to minimize the rate of exposure. The greatest distance from the radioactive source to reduce the dose of radiation exposure. The dose is also directly proportional to the time during which the body is exposed. In medical radiation exposure can be reduced by good management of the exposure dose is administered to the patient.