Stamatelatos I E, Yasumura S
Department of Medical Physics, Saint-Savas Hospital, Athens, Greece.
Appl Radiat Isot. 1995 Apr;46(4):269-72. doi: 10.1016/0969-8043(94)00146-q.
We have designed a prompt-gamma neutron activation facility for in vivo measurements of total body N in small animals. The facility incorporates a 252C neutron source with an emission rate of 3.2 x 10(8) n s-1 (140 micrograms), and a heavy-water neutron collimator-moderator assembly, together providing an optimum thermal flux-to-dose ratio for a 0.25-0.5 kg animal. Using two NaI(Tl) detectors we can attain a fractional statistical error of measurement of 3.5% for a dose equivalent of approx 50 mSv, sufficiently low that serial measurements can be made on the same animal.
我们设计了一种用于小动物体内全身氮测量的瞬发伽马中子活化装置。该装置包括一个发射率为3.2×10⁸ n s⁻¹（140微克）的²⁵²Cf中子源，以及一个重水中子准直器 - 慢化器组件，共同为0.25 - 0.5千克的动物提供了最佳的热通量与剂量比。使用两个碘化钠（铊）探测器，对于约50 mSv的剂量当量，我们可以实现3.5%的测量分数统计误差，该误差足够低，以至于可以对同一只动物进行连续测量。
