共查询到20条相似文献,搜索用时 15 毫秒
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S Uehara T Cho A Yoshimura H Yoshinaga K Konishi F Toyofuku F Shimokoshi T Maruyama 《Radioisotopes》1979,28(9):537-541
Microdosimetry of in-flight pi-beams was performed at the T1 channel of National Laboratory for High Energy Physics (KEK), Tsukuba, Japan. Distributions of lineal energy (y) in-flight pi-beams having six momentum values from 120 MeV/c to 1000 MeV/c were measured with an LET counter which simulates 2 micron sphere of soft tissue filled with the methane base tissue equivalent gas. Frequency spectra were obtained in the range of 1.6 less than y less than 430 keV/micron. Fractional dose y . d(y), cumulative dose D(y), and mean lineal energy were calculated from these spectra; then momentum dependences were investigated. These absolute values have little physical application because of the lack of data for y less than 1.6 keV/micron. However, the general trends of y distribution in momentum dependence were found, qualitatively. As the momentum becomes smaller, the rate of high y component in the dose increased. 相似文献
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S Takahashi 《Radioisotopes》1977,26(12):895-897
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Radioimmunoassay of cholylglycine in serum (author's transl) 总被引:1,自引:0,他引:1
Serum levels of cholylglycines (CG) were determined by radioimmunoassay and that of total bile acids (TBA) by enzymatic method. In normal subjects, serum levels of CG, TBA and CG/TBA ratio were 0.6 +/- 0.4 micronM, 7 +/- 2 micronM and 0.08 +/- 0.06, respectively. They were increased markedly in acute hepatitis and moderately in chronic hepatitis and cirrhosis. Thus, measurement of serum CG as compared with serum TBA appears to be a sensitive liver test. 相似文献