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Volume 39, Issue 6
Displaying 1-8 of 8 articles from this issue
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Hideo SAITO, Norio NOGAWA, Teruo ASAOKA, Naotake MORIKAWA, Yoichi ISHI ...1990Volume 39Issue 6 Pages 249-254
Published: June 15, 1990
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSTritium electron microscopic autoradiography were analyzed about metallic structure and hydrogen trapping sites by replica method and scan electron microscopy due to direct observation method. Tritium trapping sites were observed along the interface of grain boundary and basic phases, in the vicinity of boundary triple lines, precipitate and martensite lath.View full abstractDownload PDF (7580K) -
—Crosstalk of Contaminating Nuclides of 200TI and/or 202TI onto 201TI-Photopeaks—Kenji SAEGUSA, Masahiro FUKUSHI, Yoh KATOH, Hidetoshi SAITOH, Toraji I ...1990Volume 39Issue 6 Pages 255-260
Published: June 15, 1990
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSIn cardiac imaging with 201Tl, the collimator for low energy high resolution is generally used, and also the energy window, which is set on the spectral display of a pulse height analyzer of a scintillation camera, is chosen 70±12.5 keV. The purpose of this study is to discuss those conditions in 201Tl imaging with the scintillation camera.
Two types of collimators for HR (high resolution) and ME (medium energy) were used in this experiment, and we measured the pulse height spectra of 201TlCl radiopharmaceuticals in air and in a cuboid phantom, connecting a multi-channel pulse height analyzer to the scintillation camera. As a result of measuring of the pulse height spectra, two different energies of gamma rays which are not supposed to emit from 201Tl nuclide were observed, and we also identified the presence of a small amount of 202Tl (with 439 keV) and/or 200Tl (with 368 keV) from their half-life measurements.
Thus, the use of the HR-collimator with 201Tl imaging is not suitable, because the shielding effects of its septa is poor to 439 keV gamma-rays, and the scattered radiation produced by the Compton interaction contributes to the principal photopeak on the pulse height spectrum. Here, we recommend the use ME-collimator instead of the HR-one, and of the window width of 76±25 keV for increasing the count rate.View full abstractDownload PDF (634K) -
Chung-Chieng WU, Shiang-Bin JONG, Chun-Ching LIN, Min-Fen CHEN, Jong-R ...1990Volume 39Issue 6 Pages 261-263
Published: June 15, 1990
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSThe acupuncture points are known to be morphorlogically related to the nerves and vessels. Yet the physiological role of blood vessels in the formation of acupuncture points remains unknown. With subcutaneous injection of 99mTc pertechnetate at the acupuncture points K-3 and B-60 and with intra-acupuncture point injection of 99mTc pertechnetate at K-3 and B-60, a lower-limb venography like what was obtained by intravenous injection of 99mTc macroaggregated albumin was demonstrated in the present study. It seems that some acupuncture points do play a role in drainage of tissue fluid from soft tissue into the veins.View full abstractDownload PDF (2094K) -
Hideki TOKUYAMA, Syuiti IGARASI1990Volume 39Issue 6 Pages 264-267
Published: June 15, 1990
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSThe elevation of the concentration of tissue free water tritium (TFWT) in pine needles was discernible in the tree growing around a nuclear power plant. The values varied from 2.6 Bq/l to 6.1 Bq/l with a mean value of 3.8 Bq/l.
Analysis of pine needles collected at Fukui City as control samples was done. The values averaged 1.7 Bq/l and fell within 1.5 B/l-1.8 Bq/l which was obtained nation-wide survey of TFWT in pine needles in Japan.
The present study also revealed that reactor tritium incorporated into pine needles decreased rapidly with a half time of 6 days and then tissue free water tritium has a short retention time.View full abstractDownload PDF (377K) -
Junichi YAMAZAKI, Takashi UCHI, Yasuaki KAWAMURA, Mihoko IIDA, Yumiko ...1990Volume 39Issue 6 Pages 268-271
Published: June 15, 1990
Released on J-STAGE: September 07, 2010
JOURNAL FREE ACCESSThe 11 patients with chronic renal failure had the operation of the internal A-V shunt. The two groups were divided the group I (the patients were injected 67Ga-Fbg, within 5 days after the operation of A-V shunt) from the group II (the patients were injected 67Ga-Fbg. from 7 months to 6 years after A-V shunt) . We examined 72 h after the injection of 67Ga-Fbg, in all patients.
In group I, the scintigraphy showed the deposition of 67Ga-Fbg, in all 5 patients, but 3 petients were given dipyridamole (75-300 mg) . The scintigraphy examined 3 weaks after A-V shunt were negative in 2 patients in group I.
In group II, the scintigraphy showed the deposition of 67Ga-Fbg, in the two of 6 patients. Within 5 day after A-V shunt, we observed there was the tendency of the thrombus formation.
The scintigraphy of 67Ga-Fbg. was useful for the detection of thrombus in vivo.View full abstractDownload PDF (4426K) -
Subcommittee for Investigation of Field1990Volume 39Issue 6 Pages 272-280
Published: June 15, 1990
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (1385K) -
(2) Beta-ray detectors using solidsand gasses (continued)Hirokane KAWAKAMI1990Volume 39Issue 6 Pages 281-290
Published: June 15, 1990
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (1308K) -
1990Volume 39Issue 6 Pages A25P-A62M
Published: June 15, 1990
Released on J-STAGE: July 21, 2010
JOURNAL FREE ACCESSDownload PDF (3125K)
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