Nuclear Medicine Blog

Nuke-Tek by Ann Marie Alessi

Low-Energy Photon Emitters

October 25, 2013
Ann Marie Alessi, BS, CNMT, NCT, RT(N), FSNMMI-TS, Product Sales Manager, Nuclear Medicine, Biodex Medical Systems, Inc.

A number of commonly used radionuclides emit relatively abundant characteristic x-rays (low energy peak) in addition to their principal photons. The characteristic x-rays from these radionuclides have energies that fall within the peak and potentially contribute a large component to the ionization current. If the source container is glass, the x-rays may be highly absorbed in the glass wall. If the container is a capsule or plastic syringe, a significant number of the x-rays will penetrate to the sensitive volume of the chamber. >>



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