PT  - JOURNAL ARTICLE
AU  - Paul Logan
TI  - Differential Syringe Shield Effectiveness: Direct Comparisons Using SPECT and Planar Imaging
DP  - 1993 Sep 01
TA  - Journal of Nuclear Medicine Technology
PG  - 167--170
VI  - 21
IP  - 3
4099  - http://tech.snmjournals.org/content/21/3/167.short
4100  - http://tech.snmjournals.org/content/21/3/167.full
SO  - J. Nucl. Med. Technol.1993 Sep 01; 21
AB  - The use of syringe shields in clinical nuclear medicine has been employed to reduce occupational exposure. However, there is little, current, comparative literature available for the diverse number of products available. I performed single-photon emission computed tomography (SPECT) acquisition on four different shields, and the results were quantitated in order to evaluate the percentage of counts relative to an unshielded source and to the other models tested. All models tested were found to significantly reduce available counts, with the thin-wall shield producing the highest number of counts at the viewing port and the tungsten shield being the least effective overall. I concluded that the intrinsic differences between model design and materials utilized determines the overall efficiency, and that this information is important in light of both the as low as reasonably achievable (ALARA) principle and biological model concepts.