<sup>68</sup>Ge校正源的制备工艺

⁶⁸Ge校正源的制备工艺

摘要: 采用胶体法制备用于正电子发射型计算机断层显像（PET）衰减校正的⁶⁸Ge校正源。将环氧树脂与放射性⁶⁸Ge溶液均匀混合，蒸发掉其中的水分，然后装入、密封在不锈钢管内制备成⁶⁸Ge校正源。对制备的⁶⁸Ge校正源进行了质量检验，实验结果表明，⁶⁸Ge校正源密封良好无泄露、表面无污染、活性区活度分布均匀性小于±5%，各项技术指标达到国外同类产品的水平。

Abstract: ⁶⁸Ge calibration source used for positron emission tomography (PET) attenuation correction was prepared by soluble gels method， mixed radioactive ⁶⁸Ge solutions and the commercial epoxy, eliminating water by heating, then encapsulated and sealed in stainless steel tube. Quality examination of ⁶⁸Ge calibration source was performed. The results show that the ⁶⁸Ge calibration source is sealed well, the surface is pollution-free, and the active distribute of the ⁶⁸Ge calibration source is evenly with an activity uniformity not more than ±5%. The various technical indexes of the source have achieved the level of similar products abroad.