美国达拉斯论文代写：放射性药物的使用
美国达拉斯论文代写：放射性药物的使用
MO-99在诊断和治疗中被用作放射性药物。在核医学中，它被用作放射性同位素，半衰期约为6小时。是一种理想的伽玛相机式闪烁仪器。其他产品来自MO-99。Mo-99的生产工艺可以采用Mo-98中子捕获技术，也可以采用U-235裂变技术。它也被用作母体放射性同位素。现在MO-99的短缺导致了生产的管制和生产活动的强化，但是废物管理仍然是一个问题。在废物管理的背景下，在生产中，通常使用碱性和酸性溶解过程。在碱性溶解中，产生的废物会暂时以水泥等固体形式储存(Sherer et al.， 2014)。另一方面，在酸溶解过程中，液体废物被提取出来。然后储存在容器中。加工后的废物通常从生产现场运往异地储存。现在在工厂里需要注意的一个关键问题是作为废物的物质的数量。
美国达拉斯论文代写：放射性药物的使用
大约97%的铀实际上变成了废物，正如人们所看到的，积累起来的废物必须得到处理。碘131或碘131 i是碘的放射性同位素，放射性半衰期约为8天。碘131具有药用价值，既可用作治疗，也可用作诊断工具。它最常用的情况是格雷夫斯病，因为甲状腺机能亢进。作为胶囊，放射性碘的beta和gamma射线会杀死过度活跃的甲状腺，但它不会离开身体。服用后3天内伽玛辐射会减少。虽然在治疗量上，放射性剂量耐受良好，但通常也被认为有副作用。它还会增加患癌症的风险，就像18F同位素一样。I-131不会很快被消除，而且由于辐射对附近的其他人有影响，有必要将患者隔离(Sherer et al.， 2014)。虽然在3-5天，辐射减少意外暴露往往是一个问题。
美国达拉斯论文代写：放射性药物的使用
MO-99 is used as a radiopharmaceutical in diagnoses and also for therapeutic reasons. In nuclear medicine, it is made use of as a radioactive isotope, and has a half-life of about 6 hours. It is ideal for use in gamma camera style scintillation instruments. Other products are obtained from MO-99. The production process of Mo-99 is either by neutron captures technique which is conducted with Mo-98 or the fission technique on U-235. It is also made use of as a parent radio-isotope. Now MO-99 shortage led to the regulation of production and the intensification of production activities, however waste management continues to be an issue. In the context of waste management in production, usually alkaline and acid dissolution processes are made use of. In alkaline dissolution, the waste generate will be temporarily stores in a solid form like cement (Sherer et al., 2014). On the other hand in the case of the acid dissolution process, the liquid waste is extracted. It is then stored in tanks. The processed waste is usually transported from manufacturer site into offsite storage. Now the critical think to be noted in the manufactory is the amount of substance that goes as waste.
美国达拉斯论文代写：放射性药物的使用
Around 97 percent of uranium actually goes into waste and as seen the accumulating waste has to be treated. Iodine 131 or 131I is a radioisotope of iodine with a radioactive half-life of about 8 days. Iodine 131I has medicinal use, and is both used as a treatment and a diagnostic tool. Its most common use is in the case of Graves’ disease because of Hyperthyroidism. Administered as a capsule, radioactive iodine’s beta and gamma radiation will kill overactive thyroid glands, but it does not exit the body. Gamma radiation reduces in about three days after its administration. While in therapeutic amounts, the radioactive dosage is well tolerated, it is also usually seen to have adverse effects. Also it increases the risk of cancer as in the case of the 18F isotope. I-131 does not get eliminated sooner and since the radiation has an effect on others in the vicinity, it is necessary to keep the person in isolation (Sherer et al., 2014). Although in 3-5 days, the radiation decreases accidental exposure is often a concern.
