Japanese Journal of Radiological Technology

Online ISSN : 1881-4883
Print ISSN : 0369-4305
ISSN-L : 0369-4305

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Volume 51, Issue 7

Displaying 1-42 of 42 articles from this issue

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[title in Japanese]

Article type: Cover
1995 Volume 51 Issue 7 Pages Cover28-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352444

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[title in Japanese]

Article type: Cover
1995 Volume 51 Issue 7 Pages Cover29-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352445

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[title in Japanese]

Article type: Index
1995 Volume 51 Issue 7 Pages Toc19-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352446

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[title in Japanese]

Article type: Index
1995 Volume 51 Issue 7 Pages Toc20-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352447

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[title in Japanese]

[in Japanese]

Article type: Article
1995 Volume 51 Issue 7 Pages _i_-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352448

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages _ii_-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352449

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages _ii_-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352450

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages _ii_-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352451

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages _iii_-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352452

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages _iv_-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352453

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages _v_-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352454

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages _vi_-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352455

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages _vii_-_ix_
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352456

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INFLUENCE OF THE PHYSICAL CHARACTERISTICS OF TV CAMERAS REGARDING I.I.-TV DIGITAL IMAGING SYSTEMS

YOICHI EGUCHI, YUJI KAGA, KINICHI YAMADA, AKIO OKADA, SHIGEO KINAI

Article type: Article
1995 Volume 51 Issue 7 Pages 810-818
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352457

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The influence of TV cameras regarding I.I.-TV digital X-ray imaging systems has been investigated. The characteristics of pick-up tubes and their effects on the imaging system have been discussed. The results are as follows. 1)The scanning modes of TV cameras had some influence on the veiling glare fraction. 2)The modulation transfer factors were dependent on the light intensity level produced by the TV cameras.

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VARIOUS FACTORS INFLUENCING THE ACCURACY OF A THREE-DIMENSIONAL ENDOSCOPIC IMAGES ON SPIRAL CTS

MICHIHIRO YAMAGUCHI, YOSHINORI TANIGUCHI, KATSUMI HIGUCHI

Article type: Article
1995 Volume 51 Issue 7 Pages 819-826
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352458

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We have evaluated the accuracy of three-dimensional endoscopic images which were reconstructed with a double threshold shaded surface display. The factors examined are as follows: thickness of three-dimensional endoscopic images, specific artifacts of spiral CTs. We used a spiral CT(SIEMENS SOMATOM PLUS). In this study, we used a Full Scatter Water phantom which is used in radiation therapy, SPECT QA Test phantoms with an empty acrylic cylinder and a Funnel phantom. The thickness of the wall on three-dimensional endoscopic image was influenced by the function of reconstruction, the threshold and the partial volume effect. When the phantom with an empty acrylic cylinder was obliquely laid on the Z-axis, a regular spiral artifact could always be observed. This was the same as the artifact which appeared in clinical three-dimensional endoscopy. This artifact was changed by collimation and table speed. If we take these three factors into consideration which influence the thickness of the wall on a three-dimensional endoscopic image and choose the least possible collimation and table feed, it is possible to improve the accuracy of three-dimensional endoscopic imaging.

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MEASUREMENT OF IRRADIATION DOSE BY X-RAY ANALYZERS : A STUDY FOR THE ADMINISTRATION OF X-RAY EQUIPMENT

MASAHIRO SAI, KOICHI CHIDA, HIDEHARU SAKAKIDA, RYOUJI ITAGAKI, HIROKI ...

Article type: Article
1995 Volume 51 Issue 7 Pages 827-832
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352459

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By using an X-ray analyzer, it is possible to evaluate the performance of an X-ray apparatus, such as tube voltage, exposure time and irradiation dose. In this study, a comparison of irradiation dose was made using two X-ray analyzers(NERO 6000B and Model 100)and the conventional direct readout dosimeter(ionization chamber). The irradiation dose determined by Nero almost agreed with that by the conventional direct readout dosimeter for the 2-peak, 12-peak, constant potential and inverter-type X-ray generators. The irradiation dose determined by Model 100 dose not necessarily agreed with that by the conventional direct readout dosimeter at a lower tube voltage. The error is attributed to the detection theory(direct or indirect)of X-ray analyzers. The stability and reproducibility results by X-ray analyzers were excellent. Moreover, X-ray analyzers were safe and easy to handle. Therefore, they can be used for controlling the quality of X-ray generators, though we have to be careful about a characteristics of X-ray analyzers.

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EXAMINATION OF A SIMULATION SYSTEM FOR OSTEOPLASTY

NARUYUKI EDA, YUKIHIRO MATSUDA, KATSUMI IKEI

Article type: Article
1995 Volume 51 Issue 7 Pages 833-839
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352460

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We have developed a simulation system called "NUCSS" for osteoplasty and in addition the "Surgi Plan" incorporating the most sophisticated version. Then, both these systems were compared regarding the hard aspect and principal performance and were fundamentally examined. As a result, when compared with NUCSS, the Surgi Plan having three-dimensional degree of freedom was seen as being the best. This enabled us to precise by process the actual surgical procedure. As to its clinical application, the Surgi Plan provided almost simular results as the postoperative three-dimensional CT images of the patient using craniofacial osteoplasty and patient having Chiari's pelviotomy.

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A STUDY OF TRANSVERSE IMAGE RECONSTRUCTION WITH DIGITAL SUBTRACTION ANGIOGRAPHY

KIYOSHI SAKAMOTO, NORIKO KOTOURA, YUUJI TERASAWA, MASAHIKO ODA, HIROSH ...

Article type: Article
1995 Volume 51 Issue 7 Pages 840-845
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352461

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For digital subtraction angiography(DSA) with C-type equipment, it is possible to radiate an X-ray during rotation and to collect data at different angular settings. We tried to reconstruct transverse image from data obtained by scanning DSA images at different angular settings. 88 projection data were obtained by rotating the object at 180゜ during radiation. Reconstruction was made using the convolution method with pixel value distribution for each projection. Similarly, the image quality of the reconstructed images were compared with the unsubtracted and subtracted ones. In case a part of object was outside the calculating region, artifacts were generally produced. However, the artifacts were reduced by subtracting the background from the image. In addition, the cupping phenomenon caused by beam hardening was relaxed and high-quality imaging could be achieved. This method will become even more effective, if we will use it with selective angiography in which the limited area is enhanced.

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[title in Japanese]

KAZUO INAMOTO

Article type: Article
1995 Volume 51 Issue 7 Pages 846-854
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352462

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[title in Japanese]

YOSHIHIRO TAKEKAWA

Article type: Article
1995 Volume 51 Issue 7 Pages 855-857
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352463

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[title in Japanese]

SHIGEO ANAI, NOBUYOSHI OHYA

Article type: Article
1995 Volume 51 Issue 7 Pages 858-862
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352464

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[title in Japanese]

SHIGEKI YOKONO

Article type: Article
1995 Volume 51 Issue 7 Pages 862-864
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352465

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[title in Japanese]

YASUO NIIO

Article type: Article
1995 Volume 51 Issue 7 Pages 865-867
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352466

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[title in Japanese]

SHIGERU NAKATA

Article type: Article
1995 Volume 51 Issue 7 Pages 867-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352467

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[title in Japanese]

MASAAKI TAKAHASHI, TORU FUJITA, KAZUTAKA MASUDA, [in Japanese], [in Ja ...

Article type: Article
1995 Volume 51 Issue 7 Pages 868-871
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352468

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[title in Japanese]

HIDEO OHNISHI

Article type: Article
1995 Volume 51 Issue 7 Pages 871-873
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352469

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WHY THE MAINTENANCE FOR RADIOLOGICAL MODALITY IS INDISPENSABLE?

OSAMU NAKAMURA

Article type: Article
1995 Volume 51 Issue 7 Pages 874-877
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352470

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THE PRODUCT LIABILITY LAW AND TRAINING SYSTEM OF CERTIFIED MAINTENANCE ENGINEERS

YOSHIYASU KUMAYAMA

Article type: Article
1995 Volume 51 Issue 7 Pages 877-880
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352471

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CONSTANCY TEST OF CINERADIOGRAPHIC SYSTEM

HIROSHI MIZUTANI

Article type: Article
1995 Volume 51 Issue 7 Pages 880-884
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352472

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THE PRESENT CONDITION OF MAINTENANCE WITH X-RAY UNITS

SHUNICHI HASHIMOTO

Article type: Article
1995 Volume 51 Issue 7 Pages 885-889
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352473

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1995 Volume 51 Issue 7 Pages 889-892
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352474

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[title in Japanese]

MAKOTO KURANISHI, MITATE MATSUI

Article type: Article
1995 Volume 51 Issue 7 Pages 893-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352475

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[title in Japanese]

KOJI MIURA

Article type: Article
1995 Volume 51 Issue 7 Pages 893-895
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352476

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[title in Japanese]

TETSUO SAITOH

Article type: Article
1995 Volume 51 Issue 7 Pages 895-898
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352477

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[title in Japanese]

NAGAAKI OHYAMA

Article type: Article
1995 Volume 51 Issue 7 Pages 898-901
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352478

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...

Article type: Article
1995 Volume 51 Issue 7 Pages 901-905
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352479

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[title in Japanese]

[in Japanese]

Article type: Article
1995 Volume 51 Issue 7 Pages 906-907
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352480

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages 908-909
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352481

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages 910-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352482

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[title in Japanese]

Article type: Appendix
1995 Volume 51 Issue 7 Pages 911-915
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352483

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[title in Japanese]

[in Japanese]

Article type: Article
1995 Volume 51 Issue 7 Pages 916-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352484

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[title in Japanese]

Article type: Cover
1995 Volume 51 Issue 7 Pages Cover30-
Published: July 01, 1995
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00001352485

JOURNAL FREE ACCESS

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