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Yoshio HOMMA, Yukio MURAKAMI
1976 Volume 25 Issue 6 Pages
315-322
Published: June 15, 1976
Released on J-STAGE: September 07, 2010
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To find out the possibility producing practical amount of 123I
for medical use, comparative studies on α and 3He
bombardment on natural antimony up to 40 MeV were carried out by stacked foil technique.
The excitation curves and thick-target yield curves were determined for the formation of 123I,
and other by-produced nuclides such as 121I,
124I
and 125I.
In the case of the 3He
bombardment, the maximum cross section for the formation of 123I
was found to be 475 mb at 30 MeV 3He
particles. After 21 hr cooling, the yield of 123I
was 180μCi/μAh and the 121I/
123I
ratio was found to be 4.1%, which was fairly large impurity for medical use. In the case of a bombardment, the maximum cross sections for the formation of 123I,
124I
and 125I
were found to be 410 mb at 24.5 MeV, 370 mb at 35 MeV and 300 mb at 24 MeV α particles, respectively. These three nuclides were produced with yield of 174, 1.2 and 1.4μCi/μAh at 24.5 MeV a particles. The 124I/
123I
ratio was found to be 0.69%, which was much improved with those reported in literature.
123I
can be separated by distillation from dissolved solution of bombarded antimony target with radiochemical yield of 81.1%. It may be said that 24.5 MeV α
particles bombardment on natural antimony was superior in giving useful quantities of 123I
with reasonable high yield of 174μCi/μAh and only accompanied with smallest quantities of 124I
at the end of bombardment.
View full abstract
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Nagao IKEDA, Kan KIMURA, Hideharu FUJIMOTO
1976 Volume 25 Issue 6 Pages
323-328
Published: June 15, 1976
Released on J-STAGE: September 07, 2010
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Solvent extraction behavior of yttrium was studied in the system of chloroform solution of thenoyltrifluoroacetone (TTA) and 0.1 M aqueous perchlorate solution at 25°C.
88Y
was used as the tracer. The variation of distribution coefficients in the concentration range of 10-2-
10-1M TTA and pH 3-6 was explained as the extraction of YA3 into the organic phase and the formation of YA2+,
YA2+andYA3 (
A=anion of TTA) in the aqueous phase. The equilibrium constant for the reactionY
3++
3HA(org) _??_
YA3 (org) +3H
+was obtained as K0=
2.82×10-9
View full abstract
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Tatsunosuke HIRAKI, Atsushi ANDO, Itsuko ANDO, Shigeru SANADA, Kinichi ...
1976 Volume 25 Issue 6 Pages
329-332
Published: June 15, 1976
Released on J-STAGE: September 07, 2010
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Heparin is a kind of acidic mucopolysaccharide. Heparin-
67Ga
complex was prepared to investigate distribution in tumor-bearing rats. This compound was intravenously injected to the rats subcutaneously transplanted Yoshida sarcoma. These rats were sacrificed at 10 minutes, 30 minutes, 1 hour and 3 hours after injection. The radioactivities of the tumor, blood, muscle, liver, kidney, spleen and urine were measured by well-type scintillation counter. The retention values in these organs and the excretion rates in the urine were calculated. Excretion rates (%/dose) of heparin-
67G
a in 10 min., 30 min., 1 hours and 3 hours were 38.2%, 67.5%, 79.5% and 78.0%, respectively. From these facts, it was thought that heparin-
67Ga
complex had not suitable property for tumor scanning, but this compound might be suitable agent for renal function test.
View full abstract
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Hikoyuki YAMAGUCHI, Atsushi TATARA, Isao YAMAGUCHI
1976 Volume 25 Issue 6 Pages
333-334
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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Shigeko KURIHARA, Toshio YAMAZAKI, Hiromichi Akiba
1976 Volume 25 Issue 6 Pages
335-338
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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Jun KASAMA, Toshihiko SHINDO, Masao OHISHI, Toshihiro KUSUMOTO, Masami ...
1976 Volume 25 Issue 6 Pages
339-342
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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Shin-Ichi SHIMODA, Tamio IEIRI, Hitoshi SUZUKI
1976 Volume 25 Issue 6 Pages
343-344
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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Yoshihiko OSHIUMI, Yuichi ICHIYA, Kanehiro HASUO, Hiroshi HIRATA, Yasu ...
1976 Volume 25 Issue 6 Pages
345-347
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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Shin KOBAYASHI, Toshio MAEDA, Kazuo ITOH, Norihisa TONAMI, Kinichi HIS ...
1976 Volume 25 Issue 6 Pages
348-350
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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Keisuke KANAO, Minoru HONDA, Masami KIMURA, Toshihiko MIYAUCHI, Yoshit ...
1976 Volume 25 Issue 6 Pages
351-354
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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Hiroaki ISHIKAWA
1976 Volume 25 Issue 6 Pages
355-363
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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-
Bunji MARUO
1976 Volume 25 Issue 6 Pages
364
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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Kikuo KUMAZAWA
1976 Volume 25 Issue 6 Pages
365-373
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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1976 Volume 25 Issue 6 Pages
A1635-A1186
Published: June 15, 1976
Released on J-STAGE: July 21, 2010
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