RADIOISOTOPES
Online ISSN : 1884-4111
Print ISSN : 0033-8303
ISSN-L : 0033-8303
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Volume 36, Issue 9
Displaying 1-11 of 11 articles from this issue
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  • Plutonium and Uranium in Japanese Human Tissues
    Yasuhito IGARASHI, Atsushi YAMAKAWA, Nagao IKEDA
    1987Volume 36Issue 9 Pages 433-439
    Published: September 15, 1987
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_433
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    Plutonium and uranium in human tissues obtained from residents of the Tokyo area were determined by α-spectrometry and the fission track method, respectively. The distribution pattern of each element was estimated on the basis of mean concentration obtained. Plutonium is concentrated in some special organs, while uranium is distributed rather generally throughout the whole body. This difference of distribution tendency is considered to be due to the characteristics of stable chemical states of the elements in body fluid; Pu4+ for plutonium and UO22+ for uranium.
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  • Measurement of 15N Abundance of Amino Acids by Gas Chromatography-Mass Spectrometry with a Personal Computer and Its Application to the Research of Nitrogen Fixation
    Kisaburo SAMUKAWA, Yutaka KOMAI
    1987Volume 36Issue 9 Pages 440-444
    Published: September 15, 1987
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_440
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    A personal computer was used in the measurement of 15N abundance of amino acids by GC-MS. The analogue output of MS was transformed to a digital signal by an A/D converter and recorded on a hard disk of a personal computer. The ion strength ratio of the mass fragments was obtained by the manipulation of the data on the CRT.
    The 15N abundance of authentic amino acids showed a consistently low coefficient of variation of 0.03%. The 15N labeling ratios in free and protein-derived amino acids from Anabaena 7120 grown on 15N enriched potassium nitrate were measured using this method. The values determined had a lower 15N abundance than that of the administered 15N labeled potassium nitrate. This was most likely due to concurrent nitrogen fixation under these particular growth conditions.
    This method was effective in its accuracy and resulted in reduced the labor and the cost.
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  • The Evaluation of Cardiac Function and the Effect of Therapy in Acute Myocardial Infarction
    —Comparison by Radio Nuclide Method in Acute and Chronic Phase—
    Takeshi MORISHITA, Junichi YAMAZAKI, Yasuaki KAWAMURA, Mihoko IIDA, Ic ...
    1987Volume 36Issue 9 Pages 445-451
    Published: September 15, 1987
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_445
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    The cardiac function and the effect of therapy in patients with acute myocardial infarction (AMI) were assessed in over 100 patients by analysis of 201Tl-scintigraphy and 99mTc-gated pool study in our ICU. The cardiac function and 201Tl-defect ratio were compared with the results obtained in chronic phase. Sixteen of them were treated with intravenous urokinase (UK) within 6 hours from onset. The other 18 patients without UK treatment served as a control group. Significant correlation was recognized between 201Tl-defect ratio and peak-CPK levels, peak-GOT levels, peak-LDH levels. Significant correlation (γ=-0.655, γ=-0.713) were found between 201Tl-defect ratio and LVEF in acute and chronic phase. The UK group showed a significant increase of LVEF as compared with the control group in patients with antero-septal (A/S) AMI. In inferior (INF) AMI, no significant differences were observed UK and control group in LVEF, RVEF and 201Tl-defect ratio. In chronic phase, improvements of LVEF and 201Tl-defect ratio were observed in patients with A/S AMI. But no significant differences of LVEF, RVEF and 201Tl-defect ratio were observed in A/S AMI in acute and chronic phase. The UK group showed a significant increase of LVEF (50.1%) as compared with the control group of A/S AMI in chronic phase. We have demonstrated that a combination of 201Tl-seintigraphy and 99mTe-gated pool study are useful techniques in ICU, to evaluate the cardiac function and the effect of thrombolysis therapy and thus greatly contribute to the primary care of AMI cases.
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  • Evaluation of pN Factors in Patients with Primary Lung Cancer by Using Perfusion, Inhalation and Ventilation Studies
    Toyosato TAMAI, Masatada TANABE, Katashi SATOH, Kiichiro MIZUKAWA, Kan ...
    1987Volume 36Issue 9 Pages 452-456
    Published: September 15, 1987
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_452
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    The interpretation of scintigraphic patterns and the role of pathophysiological mechanisms in patients with primary lung cancer were investigated. To determine the relative roles of perfusion, inhalation and ventilation scintigraphy, the relationship between the count ratio of the affected side to the healthy side and the post-surgical histological lymph nodes factors were observed in this study. These scintigraphic count ratio's in patients with primary lung cancer did not reflect the pN factors except in the perfusions study in patients with halar primaya lung canert.
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  • A Cooperative Group Study of Clinical Efficacy of the Liver SPECT
    Yutaka MORI, Kenji KAWAKAMI, Kikuo MACHIDA, Hiyoshimaru OYAMADA, Toru ...
    1987Volume 36Issue 9 Pages 457-464
    Published: September 15, 1987
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_457
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    The purpose of this study is to evaluate the clinical efficacy of the liver SPECT about detectability of SOLs (space occupying lesion) . The images were interpreted with the planar scintigram (PS) only and combination of PS and SPECT (single photon emission computed tomography) by 11 physicians. Changes of false positive and false negative rate were calcurated to evaluate the influence of the diffuse parenchymal liver disease and the localization of the SOLs.
    Addition of SPECT to PS in the cases who are suspected SOLs is effective in right hepatic lobe (right anterior and posterior segment) to detect the SOLs, but not effective in left lateral segment.
    Addition of SPECT to PS in the cases with diffuse parenchymal liver disease and SOLs increases the false positive rate.
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  • Gamma-ray Scattering in the Low-background Shielding for Ge Detector
    Kiyoshi SHIZUMA, Kazuo IWATANI, Hiromi HASAI
    1987Volume 36Issue 9 Pages 465-468
    Published: September 15, 1987
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_465
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    Background γ-ray spectra and 54Mn spectra were measured with a Ge detector in a low-background shielding using various inner linings; Lucite, Al, Fe, Cu and Pb. The experimental results show that the background counting rate in the energy region 0-500 keV and backscattered γ ray increase in a shielding with low Z linings, It can be qualitatively understood through a simple calculation considering the γ-ray absorption and scattering processes in the shielding material.
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  • The Measurement of Serum Human Parathyroid Hormone (h-PTH53-84) and Effect of Exercise on Calcium Metabolism
    Kazutami TORIZUMI, Yoshiyuki TANIGUCHI, Hirofumi AIBATA, Shigeyuki KIJ ...
    1987Volume 36Issue 9 Pages 469-472
    Published: September 15, 1987
    Released on J-STAGE: September 07, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_469
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    This study was focussed our attention on the measurement within the upper physiological level of human serum parathyroid hormone (PTH), using kits of human PTH 53-84. This assay kit was able to detect serum PTH in sera with suble changes of sesum calcium concentrations before and after short term exercise. These serum PTH levels before and after exercise seemed to be changed within the upper physiological levels of PTH. Thus, this study suggested that the assay kit was likely to become a useful tool of the measurement of the physiological level of serum PTH in humans.
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  • Determination of 99Tc in Some Soil Samples
    Makiko OTSUJI, Riki SEKI, Nagao IKEDA
    1987Volume 36Issue 9 Pages 473-474
    Published: September 15, 1987
    Released on J-STAGE: July 21, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_473
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  • Monoclonal Antibody—From the Standpoint of Immuno-Nuclear Medicine
    Hiyoshimaru OYAMADA
    1987Volume 36Issue 9 Pages 475-483
    Published: September 15, 1987
    Released on J-STAGE: July 21, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_475
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  • Questionnaire Report of Safety Control on Instrument in Nuclear Medicine Laboratory
    Subcommittee of Nuclear Medicine Technology
    1987Volume 36Issue 9 Pages 484-499
    Published: September 15, 1987
    Released on J-STAGE: July 21, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_484
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  • [title in Japanese]
    1987Volume 36Issue 9 Pages A65P-A94M
    Published: September 15, 1987
    Released on J-STAGE: July 21, 2010
    DOIhttps://doi.org/10.3769/radioisotopes.36.9_A65P
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