Patent ID: 11872410
Assignee: QSA GLOBAL, INC
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  G | IPC A  G

Claim 0:
1. An arrangement of toroidal disks for use as a radioactive insert in a radiation source, wherein the toroidal disks are arranged in a first layer of a first plurality of toroidal disks in a circular pattern, and a second layer of a second plurality of toroidal disks in a circular pattern, wherein the first and second layers are positioned adjacent to each other, with a common longitudinal axis, and wherein the toroidal disks contain strontium-90, wherein the strontium-90 is contained in a material or compound selected from the group consisting of a strontium ceramic, a strontium glass, SrF2, Sr2P2O7, SrTiO3, SrO, Sr2TiO4, SrZrO3, SrCO3, Sr(NbO3)2, SrSiO3, 3SrO.Al2O3, SrSO4, SrB6, SrS, SrBr2, SrC2, SrCl2, SrI2 and SrWO4.