AN IMPROVED INVIVO NEUTRON-ACTIVATION SYSTEM FOR MEASURING KIDNEY CADMIUM

被引：13

作者：

FRANKLIN, DM ^{[1
]}

ARMSTRONG, R ^{[1
]}

CHETTLE, DR ^{[1
]}

SCOTT, MC ^{[1
]}

机构：

[1] UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

来源：

PHYSICS IN MEDICINE AND BIOLOGY | 1990年 / 35卷 / 10期

关键词：

D O I：

10.1088/0031-9155/35/10/005

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 [生物医学工程];

摘要：

An in vivo neutron activation system for measuring kidney cadmium has been redesigned, firstly to reduce ambient dose levels and, secondly, to improve the cadmium signal to neutron dose ratio by modifying the neutron spectrum from 238Pu/Be, by interposing a beryllium premoderator. The ambient dose was reduced by a factor of seven. The overall system performance (lower limit of detection for a given dose) was improved by 40-50%. This 238Pu/Be based system performs as well as or better than analogous 252Cf systems, without the drawback of the relatively short half life of 252Cf.

引用

页码：1397 / 1408

页数：12

共 11 条

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