Radiographic characterization and energy spectrum of the IoGold 125I source model 3631-A/S

Abstract

Despite the growing popularity of permanent implants using encapsulated 125I seeds, only two types were commercially available, Models 6702 and 6711. Recently, the Food and Drug Administration (FDA) approved a new type of 125I seed, Model 3631-A/S, called IoGold (apparent activity 0.280.63 mCi). Due to the large demand for 125I seeds for prostate implants, IoGold seeds will be available in January 1998. In this paper, the basic properties of the IoGold seeds have been evaluated in comparison to the established Models 6702 and 6711.