CT room wall barium sand protective radiation protection lead glass, barium sand paint protection lead equivalent thickness to meet the protection requirements. Outer paving 30 × 40 × 0.6mm galvanized square tube dragon skeleton radiation protection radiation protection engineering experts backing plate, aluminum plate surface ivory paste. Paste 12㎝ high baseboard 304 brushed stainless steel. Walls require antimicrobial resistance, pollution, easy to clean, disinfect, resistant to drugs erosion; material dimensional stability and durability. In order to estimate the public suffered personal dose equivalent radiation protection, should be selected according to the population may be affected by the appropriate critical group, and selection of appropriate parameters and mathematical models, to estimate the average effective dose equivalent of this group, in order to carry out dose assessment. Human activities may cause natural ionizing radiation exposure to the public level change, thereby increasing the additional restrictions caused by irradiation is necessary, it should be based on different types of sources and dose distribution, determine the specific investigation, management limit values ??and intervention levels. Radiation protection engineering experts _ radiation engineering (certified) _ Radiation protection provided by Ericsson Hebei Medical Engineering Limited. Ericsson Hebei Medical Engineering Co., Ltd. (www.hslixin.com) Hebei Hengshui, a leader in medical device manufacturing equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hebei Ericsson leadership with the staff warmly welcome all inquiries negotiations to create a better future Hebei Ericsson.