PT  - JOURNAL ARTICLE
AU  - Dell, Mary Anne
TI  - Radiation Safety Review for 511-keV Emitters in Nuclear Medicine
DP  - 1997 Mar 01
TA  - Journal of Nuclear Medicine Technology
PG  - 12--17
VI  - 25
IP  - 1
4099  - http://tech.snmjournals.org/content/25/1/12.short
4100  - http://tech.snmjournals.org/content/25/1/12.full
SO  - J. Nucl. Med. Technol.1997 Mar 01; 25
AB  - 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.