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Article type: Cover
1981 Volume 37 Issue 1 Pages
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Article type: Cover
1981 Volume 37 Issue 1 Pages
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Article type: Index
1981 Volume 37 Issue 1 Pages
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Article type: Appendix
1981 Volume 37 Issue 1 Pages
i-vii
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AKIO OKAYAMA, HIDEKI MUKAE, MITSUO ITOH, MASAHIRO HASHIDA, NOBUO INABA ...
Article type: Article
1981 Volume 37 Issue 1 Pages
1-10
Published: January 01, 1981
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We reported a new device of phantom type compensating filters for pulmonary hilar tomography with polytome U at the 35th annual meeting of the Japanese society of radiological technology. This report is to show application of this compensated method to the head, the hip joint and the lower thoracic spine in tomography. Using the filters optimal density can be obtained in all area of aim part on a X-ray film, and thus makes to get more information. 1) In the head clear shadow of pars nasalis, sinus paranasales and sella turcica is obtained. Destruction or defect of bone contour is easily. detected. It is also useful to differentiate the disorders and to determine the expansivity of the lesion. 2) In the hip joint this method has advantages over the ordinary method. There is a few misdiagnosis in trochanteric lesions such as tuberculosis or bone tumor, because of high density at the trochanteric region in ordinary method, but in this method optimal density can be obtained, and misdiagnosis is improved. Soft tissue is sharply visualized, indication usefulness in diagnosis of existence of hematoma or abscess.3) In the lower thoracic vertebra it is useful to diagnosis of the thoracic spondylosis, tuberculous spondylitis and compression fracture of the vertebral body, since optimal density of the spine can be obtained. It is also quite useful to detect small ossifications in the vertebral foraman in ossification of the flavum ligament.
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TOMOYUKI SAKAMOTO, [in Japanese], [in Japanese], [in Japanese], [in Ja ...
Article type: Article
1981 Volume 37 Issue 1 Pages
11-13
Published: January 01, 1981
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KOICHI YOKOYAMA, TAKENOBU TAKITA, SHIGEO HASHIMOTO, YUKIO KODA, HISAYO ...
Article type: Article
1981 Volume 37 Issue 1 Pages
14-22
Published: January 01, 1981
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A 15 MeV Mitsubishi medical linear accelerator was installed at our center in June 1971. Clinical use and maintenance of the machine are reviewed. Special attention should be paid to the fact that only one klystron tube has been working for nine years. This tube has now recorded more than 17,000 filament hours, while the manufacturer's warranty time is 1,500 hours. Extension of the operating hours will significantly reduce the maintenance expenses of the machine. In this aspect, we intended to evaluate the lifetime of the Mitsubishi klystron used at several hospitals by means of a questionnaire. As a result, the following points are notices : 1. It is advisable to keep in use a klystron tube which has been working normally for a quite long time.(Preventive replacement is unnecessary.) 2. A protective device should be provided to prevent the trouble which will follow the breakage in a klystron. 3. The present warranty time for the klystron may depend on the lifetime of individual products, including even some defective ones. If the occurence of such products is minimized, the mean life of the klystron will be extended considerably and, consequently, the warranty time can also be prolonged to a great extent.
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TOMIHIRO YOSHIDA
Article type: Article
1981 Volume 37 Issue 1 Pages
23-27
Published: January 01, 1981
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My X-ray working hystory has become 50 years at the end of April, 1980. At this chance, the following data were summarized ; the case numbers of X-ray photographs (517,132 cases), the total amounts of radiation exposure dose (66.85 roentgen) and the results of blood test, which were experienced during past 50 years. The amounts of exposure dose during 35 years till 1960 were measured using my own method, which measured the film blackning as 30 milli-roentgen per week by certain standard method. After 1961 till 1980,the exposure dose were recorded using that of the film-badge service of Nippon Hoan Yohin Kyokai. The total amounts of exposure dose during 50 years were about 1/4 of D=5 (N-18). The results of blood test during last 27 years were found to be mormal values. Then, it is happy to say that my body has been protected completely, from radiation hazard as a result of taking radiation protection and checking blood test always at my daily radiation works. The data of my own experiences during 50 years are summarized and reported in this paper.
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KUNIO DOI
Article type: Article
1981 Volume 37 Issue 1 Pages
28-47
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
48-54
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JJ Pagani
Article type: Article
1981 Volume 37 Issue 1 Pages
55-
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MJ Kelley
Article type: Article
1981 Volume 37 Issue 1 Pages
56-
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M Kobayashi
Article type: Article
1981 Volume 37 Issue 1 Pages
56-
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M Takahashi
Article type: Article
1981 Volume 37 Issue 1 Pages
56-
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PS Rao
Article type: Article
1981 Volume 37 Issue 1 Pages
57-
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DB Kopans
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1981 Volume 37 Issue 1 Pages
57-
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MV Yester
Article type: Article
1981 Volume 37 Issue 1 Pages
58-
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NA Baily
Article type: Article
1981 Volume 37 Issue 1 Pages
58-59
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II Rosen
Article type: Article
1981 Volume 37 Issue 1 Pages
60-
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DE Werede
Article type: Article
1981 Volume 37 Issue 1 Pages
60-61
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FG Abrath
Article type: Article
1981 Volume 37 Issue 1 Pages
61-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
62-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
62-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
62-
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[in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
62-
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[in Japanese], [in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
62-63
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
63-
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[in Japanese], [in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
63-
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[in Japanese], [in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
63-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
63-64
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
64-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
64-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
64-
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[in Japanese]
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1981 Volume 37 Issue 1 Pages
64-65
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[in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
65-
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[in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
65-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
65-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
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1981 Volume 37 Issue 1 Pages
65-66
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[in Japanese], [in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
66-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
66-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
66-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
66-
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[in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
66-67
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
67-
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[in Japanese], [in Japanese], [in Japanese]
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1981 Volume 37 Issue 1 Pages
67-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
67-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
67-
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
67-68
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1981 Volume 37 Issue 1 Pages
68-
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[in Japanese]
Article type: Article
1981 Volume 37 Issue 1 Pages
68-
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