Preparation of iodine-125 seed - Part I: Iodination of the silver rod

We studied the preparation method of 1251 seeds and found that silver was a good carrier body for 1251 and the ion-exchange technique was simple and effective for the preparation. Carrier iodine was critical for dose uniformity of the seeds and the minimal pH value for the reaction was 6.5. This paper provided valuable data for the development and preparation of 125I seed.