RADIOISOTOPES
Online ISSN : 1884-4111
Print ISSN : 0033-8303
ISSN-L : 0033-8303
Volume 23 , Issue 4
Showing 1-11 articles out of 11 articles from the selected issue
  • Tomihisa KAMBARA, Junsuke SUZUKI, Hiroe YOSHIOKA, Toshio NAKAMURA
    1974 Volume 23 Issue 4 Pages 211-214
    Published: April 15, 1974
    Released: September 07, 2010
    JOURNALS FREE ACCESS
    Studies were made to establish a rapid and simple radiochemical procedure for the determination of antimony, arsenic and cadmium in metallic zinc by neutron activation analysis. The procedure involves short time irradiation, rapid dissolution of the target and one-step separation of each nuclide (122Sb, 76As and 111mCd) from the target nuclides (65Zn and 69mZn) .
    The irradiated target was rapidly dissolved with hydrochloric acid in the presence of potassium bromate. 122Sb was separated by DEHPA extraction from concentrated hydrochloric acid and 76As by As2S3 precipitation in a 6M hydrochloric acid solution. 111mCd was freed from zinc activities by ethyl ether extraction of zinc thiocyanate complex. About half an hour was enough to separate each nuclide from the target. The limits of detection are ca. 30 ppb for antimony, ca. 15 ppb for arsenic and ca. 120 ppb for cadmium by short time irradiation of small amounts of the zinc sample.
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  • Toshio MUTO, Tadayoshi KUBODERA, Yoshiharu SHINOZAKI
    1974 Volume 23 Issue 4 Pages 215-218
    Published: April 15, 1974
    Released: September 07, 2010
    JOURNALS FREE ACCESS
    The experimental study on the adsorption of PCBs in water by activated carbon and porous polyurethane foams was carried out by means of radioactive tracer technique. The solubility of PCBs in water was also determined. PCBs-14C used in the present experiment was practically identical with Kanechlor-400.
    Percentages of adsorption of PCBs in water to activated carbon and porous polyurethane foams were 98-99 and 91-93 respectively under the equilibrium condition. More high adsorption (nearly 100% for activated carbon and 96-98% for porous polyurethane foams) was obtained by column chromatography.
    The solubility of PCBs in water was 0.11ppm at room temperature.
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  • Katsuya NAGASE, Kuninobu MARUO
    1974 Volume 23 Issue 4 Pages 219-223
    Published: April 15, 1974
    Released: September 07, 2010
    JOURNALS FREE ACCESS
    In report 1 the authors compared to discriminate between congenital atresia of the bile ducts and infantile hepatitis according to a liver scintigram and a linear scan with 131I-BSP. In this report, the authors would like to report on the characteristics of cholangiectasis. As in report 1, a liver scintigram and a linear scan were prepared immediately, 3 hours, and 24 hours after the intravenous injection of 131I-BSP.
    There were many cases in which the liver scintigram revealed the compressed pictures near the portal fissure region and the concentrations of isotope right downward. These pictures and concentrations appeared obviously gradually with the lapse of time. In the linear scanning study, the peak of the scanning pattern in congenital cholangiectasis did not appear so rapidly as that in congenital atresia of the bile ducts.
    The linear scanning pattern had two peaks in the bile duct region, the first peak produced by the isotope concentrated in the liver, the second peak produced by the isotope concentrated in the enlarged part of bile duct. This disease is characterized by the above pattern.
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  • Atsushi ANDO, Yutaka SUZUKI, Kinichi HISADA, Tatsunosuke HIRAKI, Itsuk ...
    1974 Volume 23 Issue 4 Pages 224-229
    Published: April 15, 1974
    Released: September 07, 2010
    JOURNALS FREE ACCESS
    The distribution in the rats and the radiochemical stability of 99mTc-pyrophosphate, 99mTc-polyphosphate and 99mTc-EHDP were investigated. The commercial kits were used for the preparation of these 99mTc-compounds' injections.
    There was no pertechnetate as impurity in these injections immediately after the preparation. In these three 99mTc-compounds, about 20% of the injected 99mTc-activity was localized in the skeleton at 2 hours after i.v. injection. Expressed as % dose/g body weight at 2 hours after i.v. injection, bone/blood, bone/muscle, bone/liver and bone/kidney ratios were 11.3, 38.4, 0.7 and 2.3, respectively in 99mTc-pyrophospate, and bone/blood, bone/muscle, bone/liver and bone/kidney ratios were 14.6, 52.1, 1.1 and 1.9, respectively in 99mTc-polyphosphate, and bone/blood, bone/muscle, bone/liver and bone/kidney ratios were 24.2, 153, 46.5 and 3.4, respectively in 99mTc-EHDP. At 4 hours after i.v. injection, these ratios increased in 99mTc-EHDP but were not varied in other two 99mTc-compounds. Bone/callus ratio was 0.6-0.8 from 2 hours to 4 hours after i.v. injection in these compounds.
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  • Kingo FUJIMURA, Haruto UCHINO
    1974 Volume 23 Issue 4 Pages 230-234
    Published: April 15, 1974
    Released: September 07, 2010
    JOURNALS FREE ACCESS
    It was demonstrated that Dicopac, a new Schilling test kit (RCC, England) by the dual-isotope method was useful in the differential diagnosis of macrocytic hyperchromic anemia, including pernicious anemia. It also served to the diagnosis of diseases of the small intestines, especially in the ileum, showing the absorption at the ileum. Compared with previous methods, Dicopac has the following advantages: the diagnosis can be obtained by only once administration, and it is possible to differentiate the sites where vitamin B12 absorption is disturbed, by obtaining the excretion ratios of 57Co vitamin B12 and 58Co vitamin B12, irrespective of the incomplete urinary collection.
    Therefore, Dicopac was proved to enable easy diagnosis of the secretion deficiency of intrinsic factor and easy differentiation of the sites with disturbances of vitamin B12 absorption.
    This method is expected to play an important role in these differential diagnosis.
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  • Ikuro TATSUNO, Sotoe KATO, Shosuke TAKAMURA, Masahiro TANGO
    1974 Volume 23 Issue 4 Pages 235-237
    Published: April 15, 1974
    Released: July 21, 2010
    JOURNALS FREE ACCESS
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  • Yukio MURAKAMI
    1974 Volume 23 Issue 4 Pages 238-249
    Published: April 15, 1974
    Released: July 21, 2010
    JOURNALS FREE ACCESS
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  • Akira OHNO, Nobuo TAKISHIMA, Toshiaki NOJIRI, Chiaki YAMAMOTO, Yoichi ...
    1974 Volume 23 Issue 4 Pages 250-259
    Published: April 15, 1974
    Released: July 21, 2010
    JOURNALS FREE ACCESS
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  • Takashi KITABATAKE, Masao HARA, Kazuaki SATO, Ryo KAYAMORI
    1974 Volume 23 Issue 4 Pages 260-266
    Published: April 15, 1974
    Released: July 21, 2010
    JOURNALS FREE ACCESS
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  • Kunio KURATA
    1974 Volume 23 Issue 4 Pages 267-273
    Published: April 15, 1974
    Released: July 21, 2010
    JOURNALS FREE ACCESS
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  • 1974 Volume 23 Issue 4 Pages A1427-A980
    Published: April 15, 1974
    Released: July 21, 2010
    JOURNALS FREE ACCESS
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