1、 To optimize the open type radiation work and achieve the same application purpose, toxic radiation should be selected

性核素，并將使用量(放射性活度)控制在需要量的值。這樣即可裝將該核素造成內照射的危害降至可以合理達到的程度。

Sex nuclide, and the amount of use (radioactivity) is controlled at the value of the required amount. In this way, the damage caused by internal irradiation can be reduced to a reasonable level.

例如.在醫(yī)療工作中,應用放射性碘診斷甲狀腺疾病，可以認為131I、125I123I具有相同的作用,，但三者使甲狀腺接受的劑量卻相差很大。如均用7.4X104Bq(2μCi)對患者進行診斷時。由于1231的半衰期短(13h).γ射線能量單一且較低(0.159MeV),屬于低毒型放射性核素.不僅使γ照相機的影像較清晰，診斷陽性率高，而且它給予甲狀腺的劑量僅相當于1311的1%左右。因此，現在提倡診斷甲狀腺疾病用1231代替‘1251和’1311.

For example, in the medical work, 131I and 125i123i have the same role in the diagnosis of thyroid diseases, but the doses they receive are quite different. If all patients were diagnosed with 7.4x104bq (2 μ CI). Because the half-life of 1231 is short (13h), and the energy of γ - ray is single and low (0.159mev), it belongs to low toxic radionuclide. It not only makes the image of γ camera clear, but also has a high positive rate of diagnosis. Moreover, the dose it gives to thyroid is only about 1% of 1311. Therefore, 1231 instead of 1251 and 1311 is now advocated for the diagnosis of thyroid diseases

二、內外照射防護兼顧

2、 Both internal and external radiation protection

有些開放型放射性工作場所，使用的放射性核素是混合輻射體，既放出高LET（傳能線密度）α或β粒子，又放出低的LETγ射線，因此，即要防止內照射，以要防護外照射。例如醫(yī)學上操作131I，在利用時間、距離、屏蔽防護外照射的同時，還要利用通風柜等設施進行操作，防止131I的污染，并坱具備處理廢水、廢物的設施工，如廢水衰變池和廢物儲存箱等。

In some open radioactive workplaces, the radionuclides used are mixed radiators, which not only emit high let (energy transmission linear density) α or β particles, but also emit low let γ rays. Therefore, it is necessary to prevent internal radiation and protect external radiation. For example, when operating 131I in medicine, when using time, distance and shielding to protect external radiation, we should also use ventilation cabinet and other facilities to operate to prevent 131I pollution, and have the facilities and construction of wastewater and waste treatment, such as wastewater decay pool and waste storage tank.

公司射線防護器材產品齊全:有X、γ射線手動平開、推拉防護門窗，電動平開、平移（中子、質子）防護門；各種鉛當量的透視、照相機房；鉛玻璃、鉛防護屏、介入防護；鉛衣、鉛帽、鉛手套、鉛眼鏡；鉛板、硫酸鋇砂、射線復合防護材料等防護器材。具備完善的質量保證體系和售后服務措施。公司可根據客戶的需求，采用新材料、新技術、新工藝，設計制作高質量、高標準的各類輻射防護器材，包括放療輻射防護、醫(yī)用診斷射線防護、核醫(yī)學（同位素）輻射防護，介入治療射線防護、工業(yè)射線探傷輻射防護等?？蔀閲鴥韧飧麽t(yī)療機構、工礦企業(yè)單位的放射防護工程進行合理、優(yōu)化的防護設計和施工，承接大型機房放射防護裝修工程。

The company's ray protection equipment products are complete: X-ray, γ ray manual flat opening, push-pull protection doors and windows, electric flat opening, translation (neutron, proton) protection doors; various lead equivalent perspective, camera room; lead glass, lead protection screen, intervention protection; lead clothing, lead cap, lead gloves, lead glasses; lead plate, barium sulfate sand, ray composite protection materials and other protection equipment. Have perfect quality assurance system and after-sales service measures. According to the needs of customers, the company can adopt new materials, new technologies and new processes to design and manufacture all kinds of radiation protection equipment with high quality and high standard, including radiation protection of radiotherapy, medical diagnostic radiation protection, nuclear medicine (isotope) radiation protection, interventional treatment radiation protection, industrial radiation detection radiation protection, etc. It can carry out reasonable and optimized protection design and construction for radiation protection projects of medical institutions, industrial and mining enterprises at home and abroad, and undertake large-scale room radiation protection and decoration projects.