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Article type: Cover
1978 Volume 33 Issue 5 Pages
Cover13-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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Article type: Cover
1978 Volume 33 Issue 5 Pages
Cover14-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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Article type: Appendix
1978 Volume 33 Issue 5 Pages
i-iii
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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MASAKATSU HATAGAWA, RIE YOSHIDA
Article type: Article
1978 Volume 33 Issue 5 Pages
548-551
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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In tomographic techniques by means of the X-ray beam collimated to the plane for visualization, the CT developed recently needs computer technology for its image reconstruction. In contrast to this, the method of image reconstruction reported here by the author does not need computer, instead utilizes two-dimensional Fourier transformation using a helium and neon gas Laser (λ=6,328Å). Transverse X-ray tomogram of phantom was obtained by the present method.
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SHIGEO AKAGI, TOSHINORI KOMBA
Article type: Article
1978 Volume 33 Issue 5 Pages
552-558
Published: January 01, 1978
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Current method to achieve stable action of X-ray apparatus needs expensive measuring instrument and high level technic. Only a small number of Hospital are able to have such expensive measuring instrument. Then, we designed trial instrument which is performance and low price, and it consit of things which get everywhere, such as motor, drum, X-ray film and etc., This unit. called the Linear Strobo Scope System. (First production units are scheduled for the last half of 1975. The new Linear Strobo Scope System represent very today) This system is based on "Spinin top" method. This apparatus was designed to (1) to (5). (1) Simple and Compact design. (2) Low price. (3) Cassete is Drum (In order to get Linear Pattern) (4) Measure of Short time exposure (1 msec) to Long time exposure. (5) Application With 10×12in. Film. Apparat; Dimensions : L×W×H=200×150×120mm. Shaft speed : 40rpm, 90rpm, 200rpm, 1,500rpm. Slit : 1.0×60.0mm (Max) Film : 10×12in.×1/4. At first, The film sets on drum. Then take exposure when the rotor turns. And the developed film shows two pattern, Abnormal or Normal. Result; It can be approved that the strobo pattern shows X-ray exposure time, tube voltage wavefrom deformation about all of generators. Discussion : The device which we call a Linear Strobo is a simple and useful gadget, capable of providing a certain amount of information about the performance of an X-ray unit, without the need to dismantle or even unscrew any part of the set. Our useing Drum system is made Linear Strobo method. Therefore, the resulting strobo method are easy to read with good resolution at the performance of an X-ray unit. It can be contribute to a short time exposure technic such as 1 msec to 1.5 sec.
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TSUTOMU NAKANO, AKIRA YAKIYAMA, TAKASHI IZUMI, JUNJI SHINDOU
Article type: Article
1978 Volume 33 Issue 5 Pages
559-563
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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In case of radiation therapy using electron beam by Betatron in our hospital, we had set the top of cone to adjust the visible mark which lining patient's skin. But, it is difficult to adjusting when top of the cone will be apart from patient's skin. So, we made radiolucent mirror for electron beam using 0.013 mmAl foil, and enable to visualized the field area. We have been using this mirror for seven months, and we perform the setting certainly and easily.
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AKIYOSHI OTSUKA, HIROMOTO UTSUMI, YOSHIHARU HIGASHIDA, SHIN'ICHI ...
Article type: Article
1978 Volume 33 Issue 5 Pages
564-569
Published: January 01, 1978
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(Introduction) Since the discovery of X-rays in 1895 and their first application to medical treatment, elucidation of the nature of X-rays scattered by the subject has been an important question. Scattered X-rays reduce the contrast of a film and lower its value for diagnostic purposes. Therefore, various studies have been made to develop some useful apparatus for eliminating such scattered X-rays, and as a result, the image quality of X-ray photographs has been considerably improved. These scattered X-rays are not entirely ineffective; some of them can be put to good use. It is not necessary, therefore, to eliminate these scattered X-rays completely, rather, the correlation between the content of scattered X-rays and the image quality should be elucidated so that such results may be utilized according to the needs. In the study of this correlation, the optical transfer function was used.(Conclusion) (1) The greater the content of acattered X-rays and the MFD, the lower the response. When the content is 100per cent, the response is almost zero. (2) The response of scattered X-rays is almost constant irrespective of the spatial frequency. (3) Theoretically, X-ray films used for everyday clinical purposes have lower values of response due to scattered X-rays. To improve the image quality, these scattered X-rays have to be eliminated, but it is not always wise to try to remove them completely. It is more important to achieve a good balance between the content of scattered X-rays and the image quality, depending on the diagnostic purpose.
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NORIYUKI YASUDA, KANAME MAEDA, FUMIAKI UTO, KIMITERU TANAKA, ICHIRO YO ...
Article type: Article
1978 Volume 33 Issue 5 Pages
570-576
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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Automated diagnosis of scintigraphy image become possible if the various factors included in scintigram can be changed to digital values. Among these factors, we succeeded to change the shape factor to Gestalt value as configuration value, using theory of pattern recognition. Clinical evaluation was performed on the application to the liver scintigraphy with this Gestalt value. Deformity of the liver due to various diseases well correlated with Gestalt value especially swelling of left lobe. This technique will contribute for automated diagnosis of scintigraphy with other imformation from scintigram.
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
577-579
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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MASAYUKI MAEDA, RYOSUKE NEGORO, SHIGEYUKI KIJI, AKIRA HASHIMOTO, KAZUT ...
Article type: Article
1978 Volume 33 Issue 5 Pages
580-583
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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OSAMU AIKAWA
Article type: Article
1978 Volume 33 Issue 5 Pages
584-592
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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Ultrasonic techniques has been used quite extensively not only in neurology, obsterics and gynecology, but also in cardiology. Recently ultrasonography has been used for evaluating and diagnosing diseases involving intra-abdominal and retroperitoneal structure. During the past 2 years we have performed over 300 ultrasonographies for various intra-abdominal and retroperitoneal diagnostic problems. Ultrasonography has proved to be complementary to many of the established roentogenographic and isotope examinations. The procedure is safely and noninvasively performed, so the patient is examined without any discomforts. In this paper the principles of ultrasound diagnosis will be briefly described. Normal ultrasonographic anatomy will be demonstrated. Many illustrative cases demonstrate the various image patterns of characteristic of abdominal ultrasound.
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Article type: Appendix
1978 Volume 33 Issue 5 Pages
593-594
Published: January 01, 1978
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Article type: Appendix
1978 Volume 33 Issue 5 Pages
595-597
Published: January 01, 1978
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1978 Volume 33 Issue 5 Pages
598-599
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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[in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
600-601
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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SHUSUKE SONE, TOKURO HIGASHIHARA, SHIZUO MORIMOTO, KANJI YOKOTA
Article type: Article
1978 Volume 33 Issue 5 Pages
602-607
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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The types of diagnostically important images are discussed and the detectability of low contrast linear foci and unsharp nodular objects of low density is suggested as of prime importance. The comparison of chest films obtained using G4-RXO and Lanex-OGI with those obtained using conventional Hiscreen system was made concerning the visibility of some fine anatomical structures. G4 system showed increased noise and Lanex system showed slightly decreased contrast and were inferior to the latter. It is desirable to use the increased sensitivity of rare earth systems, permitting the shorter exposure times and smaller focal spots, to improve the image quality in such fields as pediatric radiography, (magnification) angiography, tomography, radiography using portable X-ray unit and photofluorography.
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HIDEO TOHMA
Article type: Article
1978 Volume 33 Issue 5 Pages
608-619
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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Now, we can obtain a new radiographic system which consists of green-emitting intensifying screen containing rare earth phosphors and green-sensitive orthochromatic medical X-ray film. This system enables reduction of patient's X-ray exposure in comparison with normal system. This time, we have studied on the system about the following point : ・image quality of radiographic system ・X-ray apparatus ・clinical adaptation ・handling ・others
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KEIJI SHIMIYA, NORIO MIURA, KATSUMI KURIHARA, YUJIRO SUZUKI
Article type: Article
1978 Volume 33 Issue 5 Pages
620-629
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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Recently, the rare earth screen-film combination attracts attention because of decreasing the radiation dose to the patient. To improve the image quality of this combination, we recognized the fundamental properties of the rare earth phosphor fully. Further we considered the factors required to decrease the exposure and to improve the image quality. We considered physically the effective methods of using the rare earth screen-film combination. We considered the following. 1) The process of using hi-speed systems and the status quo. 2) The properties of the rare earth screen. 3) The factors of the image quality in the hi-speed range. 4) The image quality of the rare earth screen-film combination. To use this rare earth screen-film combination effectively in radiographic diagnoses, it is important that we improve the image quality by using the small focus and radiographing for a short exposure time. Particularly it is effective to apply this combination to gastrointestinal radiography, angiography and magnification technique. In future it will be effective to apply to mammography and multitomography.
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[in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
630-634
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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Brain W.A. Leeming
Article type: Article
1978 Volume 33 Issue 5 Pages
635-
Published: January 01, 1978
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Thomas J. Spackman
Article type: Article
1978 Volume 33 Issue 5 Pages
635-
Published: January 01, 1978
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Sin Kim
Article type: Article
1978 Volume 33 Issue 5 Pages
635-636
Published: January 01, 1978
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Victor M. Haughton
Article type: Article
1978 Volume 33 Issue 5 Pages
636-
Published: January 01, 1978
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David Legge
Article type: Article
1978 Volume 33 Issue 5 Pages
636-
Published: January 01, 1978
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Esberg H.
Article type: Article
1978 Volume 33 Issue 5 Pages
636-
Published: January 01, 1978
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Article type: Appendix
1978 Volume 33 Issue 5 Pages
637-638
Published: January 01, 1978
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1978 Volume 33 Issue 5 Pages
639-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
639-
Published: January 01, 1978
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[in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
639-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
639-640
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
640-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1978 Volume 33 Issue 5 Pages
640-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
640-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1978 Volume 33 Issue 5 Pages
640-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
640-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1978 Volume 33 Issue 5 Pages
640-641
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1978 Volume 33 Issue 5 Pages
641-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1978 Volume 33 Issue 5 Pages
641-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
641-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1978 Volume 33 Issue 5 Pages
641-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
641-642
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
642-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
642-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
642-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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Article type: Appendix
1978 Volume 33 Issue 5 Pages
642-649,658
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
643-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
643-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
643-644
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
1978 Volume 33 Issue 5 Pages
644-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
1978 Volume 33 Issue 5 Pages
644-
Published: January 01, 1978
Released on J-STAGE: August 31, 2019
JOURNAL
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