The use of molecular sieves to produce point sources of radioactivity

被引：13

作者：

Bailey, DL ^{[1
]}

Snowdon, G ^{[1
]}

Cooper, RG ^{[1
]}

Roach, PJ ^{[1
]}

机构：

[1] Royal N Shore Hosp, Dept Nucl Med, St Leonards, NSW 2065, Australia

来源：

PHYSICS IN MEDICINE AND BIOLOGY | 2004年 / 49卷 / 03期

关键词：

D O I：

10.1088/0031-9155/49/3/N02

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

We have used commercially available molecular sieves (zeolites) to adsorb radioactivity onto small (similar to2.1 mm diameter) beads for use in various applications in nuclear medicine. Soaking the beads in [Tc-99m]-NaTcO4 solution of similar to3 GBq ml(-1) for 1-2 min can produce point sources containing 3-6 MBq total. Radioactive uptake was strongly dependent on bead size. We have employed the sources for gamma camera uniformity and as point source markers for interactive identification of anatomical landmarks. Due to their small size (much less thansystem spatial resolution), relatively high uptake and negligible scattering contribution they provide excellent devices with which to measure spatial resolution, detector uniformity and energy resolution. The molecular sieves are inexpensive and readily usable with both single photon and positron emitting radionuclides.

引用

页码：N21 / N29

页数：9