Preparation of ⁶⁸Ge Line Source Used for PET Attenuation Correction

⁶⁸Ge line sources used for PET attenuation correction were introduced by adsorption method with silical gel as substrate, and the quality examination of ⁶⁸Ge line source was performed. The results showed that the adsorption rate of silical gel for adsorbing Ge was high, and the distribution uniformity of the ⁶⁸Ge on silical gel was well, the ⁶⁸Ge line source was sealed well, the surface was pollution-free, and the activity of the ⁶⁸Ge line source was distributed evenly. The physics properties of the source achieved the same level of the product abroad on the whole.