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FMJ-81型放射免疫
γ
计数器可用于核医学中常用的
125
I、
131
I、
113m
In、
99
Tc和
51
Cr等放射
γ
或X射线的同位素测量和数据处理。对放免分析最重要的同位素
125
I的测量效率大于76%,本底小于70 cpm。为了保证样品试管、传动机械及马达等设备在任何故障条件下不受损伤,采取了相应的安全措施。仪器可与MIC-80型微型计算机联接进行数据实时处理。选取国内通用的RIA标准曲线拟合方程,用以计算未知样品浓度值。RIA标准曲线坏点自动剔除程序已编入数据处理系统,该微机的计算模式灵活可变,编制程序方便。
Model FMJ-81 RIA
γ
counter can be used for both measurement and calculation of the results from the assayed samples. The sample capacity is 250 standard sample test tubes within 25 racks. The energy range of the instrument is such that the isotopes of current interest
125
I
131
I
113m
In
99
Tc
51
Cr and etc. can be counted. The detecting efficiency for
125
I
the isotope with the greatest importance in RIA
is more than 76%
with the background less than 70 cpm. Corresponding safety measures have been taken to prevent the sample test tubes
conveyer and drive motor from damage. The instrument can be connected with an MIC-80 microcomputer for real-time data processing. Some of the most widely used empirical curve fittings have been selected to calculate the unknown sample's concentration values. Program for automatically rejecting bad standard curve points has been established. The microcomputer provides flexible calculation capacity and makes programming easy.
A. James et al ., Physics in nucleas medicine , 1st ed ., New York , 1980 .
F. E. Grubbs , Ann. Math. Statistics , 21 , 27 ( 1950 ).
杜毅仁 等 , MIC-80微型计算机 (上海交通大学科技交流室资料) , 1983 年。
U. Pietilä et al ., Design principles for automatic RIA gamma counter , Proceedings of conference for "Radiochemical Techniques in Clinical Biochemistry" , Univ. of Sussex , 21st-23rd Sept. 1976 .
T. G. R. Rawlins et al ., Calculation of RIA results using the spline function , Reprinted from International Laboratory , Nov./Dec, 1978 .
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