In vivo measurement of cortical bone lead using polarized x rays.
In vivo measurement of cortical bone lead using polarized x rays.
复制标题
使用偏振 X 射线体内测量皮质骨铅。
DOI：
10.1118/1.596353
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发表时间：
1989
期刊：
影响因子：
3.8
通讯作者：
Jenks,ST
中科院分区：
文献类型：
--
作者：
Wielopolski,L;Rosen,JF;Slatkin,DN;Zhang,R;Kalef-Ezra,JA;Rothman,JC;Maryanski,M;Jenks,ST
描述了一种利用偏振辐射测量人体受试者体内铅含量的X射线荧光系统。最低检测限约为胫骨皮质中6.4 ppm湿重铅，覆盖4 mm软组织。这似乎足以评估铅中毒学龄前儿童的铅储存。测量需要16.5分钟，受试者的有效等效全身剂量为2.5 μSv。本文描述了该系统及其校准和验证。
An x‐ray fluorescence system which utilizes polarized radiation to measure lead in vivo in human subjects is described. The minimum detection limit is approximately 6.4 ppm wet weight lead in the cortex of the tibia with 4 mm of overlying soft tissue. This appears to be adequate for assessing lead stores in lead‐toxic preschool children. The measurement requires 16.5 min and is associated with an effective equivalent whole body dose to the subject of 2.5 μSv. The system, its calibration and its validation are described herein.