@article {Dell12, author = {Mary Anne Dell}, title = {Radiation Safety Review for 511-keV Emitters in Nuclear Medicine}, volume = {25}, number = {1}, pages = {12--17}, year = {1997}, publisher = {Society of Nuclear Medicine}, abstract = {With the advent of high-energy collimators and dual-head coincidence cameras, standard nuclear medicine facilities will soon begin imaging with PET isotopes. The use of 511-keV emitters raises new radiation safety concerns for technologists traditionally limited to handling 99mTc and other low-energy isotopes. This article is a basic review of positron emitters, measurement concerns, exposure rates, shielding requirements and external radiation exposure mitigation. Newly developed PET shielding products are presented and regulatory status is discussed briefly.}, issn = {0091-4916}, URL = {https://tech.snmjournals.org/content/25/1/12}, eprint = {https://tech.snmjournals.org/content/25/1/12.full.pdf}, journal = {Journal of Nuclear Medicine Technology} }