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Article type: Cover
1977 Volume 33 Issue 3 Pages
Cover7-
Published: September 01, 1977
Released on J-STAGE: August 31, 2019
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Article type: Cover
1977 Volume 33 Issue 3 Pages
Cover8-
Published: September 01, 1977
Released on J-STAGE: August 31, 2019
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Article type: Appendix
1977 Volume 33 Issue 3 Pages
i-iv
Published: September 01, 1977
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AKIYOSHI OTSUKA, HIROMOTO UTSUMI, NOBUO INABA, YOSHIHARU HIGASHIDA, YO ...
Article type: Article
1977 Volume 33 Issue 3 Pages
233-237
Published: September 01, 1977
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It is a matter of course that a very short time radiography of less than 1/100sec. (10m sec.) is useful for babies and infants as well as for serial Angiocardiography. This has been made possible by the recent progress in sensitive materials. Also, improvements in X-ray apparatuses including the multi-phase device and the single-phase one have achieved an exposure of 1/100sec. or less. The actual X-ray emission durations differ between the single-phase device and the multi-phase one, although the timer indication may be the same on the controller. If the exposure for radiography is rather long, there is no problem, but if the exposure is instantaneous, there arise problems. In the case of the multi-phase device, there is a problem when a high voltage is applied (the initial application), the instantaneous exposure being very difficult. Considering the provisions for the timer (for durations of exposure), the actual X-ray emission time is longer than the indicated time. In the case of the single-phase device, the indicated time and the real exposure time almost agree if several pulses are taken, but if one pulse is considered, there is a big difference between the indicated time (1/120,1/100sec.) and the real exposure time, the latter being considerably shorter. This paper deals with the comparison of X-ray characteristics between the cases involving a single-phase device with one pulse and a multi-phase device with an exposure of 3 msec. so that attention may be called to the significance of the single-phase 1-pulse control system.
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KENICHI AOYAMA, TOSHIO UEDA, YUKIO UCHIYAMA
Article type: Article
1977 Volume 33 Issue 3 Pages
238-244
Published: September 01, 1977
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Conformation mechanism is capable of fitting the high dose region to the shape and size of any tumor. In case of the conformation radiotherapy for cancer of the maxillary sinus, the shapes of the target volume and the transverse section of the patient's face are considerably constant in every patients. The axial transverse tomograms of the maxillary sinus in 52 cases with cancer of the maxillary sinus were traced and the shape of the target volume was decided on each case. From these procedures it was found out, that the shape of the transverse section of the patient's face can be substituted by the long oval of Haynes's with the maximal difference of 3 mm (about 3% difference of the TPR). Three kinds of cam (small, middle and large size) were prepared on the practical application of this method, because the figure of the transverse section of the patient could be also classified three kinds of long oval of Haynes. The TPR and the dose can be easily calculated from these standardized figures.
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TAKEO MIZUTANI, TOSHIO UEDA
Article type: Article
1977 Volume 33 Issue 3 Pages
245-249
Published: September 01, 1977
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One of the basic principles in radiotherapy technique is that the accuracy of set-up must be maintained in daily treatment. If patent moves unconciously, preciseness of treament machine and localization become useless. In this report, accurate and simple designed head immobilization unit was described. The unit consists of three main parts ; for head, chin and ear support. These were designed under the observation of displacement of portals at each treatment of the head and neck lesion. The unit was easy to operate and in the daily treatment of patients. On application of this unit, the displacement of portals less than 1 mm was obtained from the measurement of about 80 cases.
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MAKIO KUDOH, TOSHIO UEDA, MAMORU MUROGA
Article type: Article
1977 Volume 33 Issue 3 Pages
250-255
Published: September 01, 1977
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It is essential that once the field is correctly planned, this set-up be capable of reproduction every day for treatment. But, a little displacement is unavoidable, even if the treatment field is carefully set. In this paper, the localization errors in the several parts of the body were observed. Fuji industrial film of type 80 was used for the study of localization error. The data of this study were obtained from 678 sheets of treatment film for 36 patients with tumor of the pituitary gland, ca. of the maxillary sinuses, ca. of the larynx, ca. of the esophagus and ca. of the uterine cervix. The largest standard deviation of error was 5mm in head region. In this region, 7.6 mm were observed due to the involuntary movement of patients. The errors of the other parts of the body were 4 mm or less and incidence of error due to unintentional movement was neglisible.
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TAKESHI SAWADA, TOMOKO ASANO, TAKAHIKO KAZIHARA, TAKAYOSHI TUCHIYA, SI ...
Article type: Article
1977 Volume 33 Issue 3 Pages
256-261
Published: September 01, 1977
Released on J-STAGE: August 31, 2019
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In october 1975,the first computed tomography (CT) unit Hitachi-250 in japan was installed in our hospital. Since then, the total number of patients who were examinea has amountea to 1,600 so far. During a period this time, we had a great difficulty in inspecting infants. The scanning time is about 4 minutes in this unit. The most important problem is how to fix the head of anesthetized babies and to ensure the trechea. In an attempt to solve this problem, we have devised a new CT adaptor for infants.
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[in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
262-263
Published: September 01, 1977
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[in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
264-266
Published: September 01, 1977
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KAZUYA YAMASHITA
Article type: Article
1977 Volume 33 Issue 3 Pages
267-281
Published: September 01, 1977
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The most difficult problem in radiologic diagnosis is the derivation of a function describing the quality of radiologic image in terms of physical factors of the imaging process. Observer performance in detecting detail of radiographs is influenced by the relationable and unrelationable factors, the former is the objective evaluation, the latter is the subjective evaluation. Three major purpuses in this paper : First, to propose the radiologic imaging systems. Second, to examine the problems of the method of the objective and subjective evaluation. Third, we attempt few experiences by the mathematical psychological method and suggest prospect. Proceeding to those, it will be possible to solute the most difficult problem in radiologic image research.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
282-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
282-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
282-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
282-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
282-283
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
283-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
283-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
284-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
284-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
284-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
284-285
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
285-
Published: September 01, 1977
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[in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
285-286
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
286-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
286-
Published: September 01, 1977
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[in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
286-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
287-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
287-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
287-288
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
288-
Published: September 01, 1977
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[in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
288-
Published: September 01, 1977
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[in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
288-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
289-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
289-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
289-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
290-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
290-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
291-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
291-292
Published: September 01, 1977
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[in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
292-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
292-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
292-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
292-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
292-293
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
293-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
294-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
294-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1977 Volume 33 Issue 3 Pages
294-
Published: September 01, 1977
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1977 Volume 33 Issue 3 Pages
294-
Published: September 01, 1977
Released on J-STAGE: August 31, 2019
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