Japanese Journal of Radiological Technology

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

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Volume 50, Issue 3

Displaying 1-37 of 37 articles from this issue

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[title in Japanese]

Article type: Cover
1994 Volume 50 Issue 3 Pages Cover11-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501427

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[title in Japanese]

Article type: Index
1994 Volume 50 Issue 3 Pages Toc11-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501428

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[title in Japanese]

Article type: Index
1994 Volume 50 Issue 3 Pages Toc12-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501429

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages i-xxiv
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501430

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages xxv-xxix
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501431

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A THEORETICAL INVESTIGATION OF THE IMAGE QUALITY EVALUATION OF ASYMMETRIC SCREEN-FILM SYSTEMS

TAKASHI WAKAMATSU, HIROHARU OKADA

Article type: Article
1994 Volume 50 Issue 3 Pages 371-378
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501432

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A theoritical investigation of the image quality evaluation of asymmetric screen-film systems is developed. In connecting with the front and back side image of a film, it is helpful to assess the image quality by keeping in mind that an asymmetric screen-film system involves radiographic density rather than optical illuminance. Therefore, overall MTF depends on radiographic density comprising parallel linkage of each side MTF with relative gradient weight of an asymmetric screen-film system. Slit and chart measurement methods of MTF for asymmetric system are discussed. Consequently, it can successfully be to evaluate the image quality of the simulated asymmetric system by NEQ (u).

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STUDY OF MTF MEASUREMENTS BY FOURIER TRANSFORM USING SQUARE WAVE CHART

ISAO MURO, SHU IKEDA, SHINJI HARAGUCHI, TAKESHI MURAKAMI, HIROSHI NAKA ...

Article type: Article
1994 Volume 50 Issue 3 Pages 379-385
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501433

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A New MTF measurement of the screen-film system by the Fourier analysis using the square wave chart are presented. The accuracy and reproducibility of the measurement were evaluated by computer simulation based on the known MTF data. This method has an advantage that can measure the MTF without the Coltman's formula by computing the Fourier spectrum of the fundamental frequency of the each square wave. It takes 8 minutes to obtain an MTF by using the square chart (Funk, Co. LTD). If we can make a square wave chart which have wide distance from window to window, it be able to measure no truncation error. We can measure high frequency band much more accurately.

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^<99m>Tc-RBC SUBUTRACTION SCINTIGRAPHY : ASSESSMENT OF BLEEDING SITE AND RATE

SYOICHI INAGAKI, SYUICHI TONAMI, MASAKAZU YASUI, MAKOTO KURANISHI, KOU ...

Article type: Article
1994 Volume 50 Issue 3 Pages 386-393
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501434

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Sequential abdominal scintigrams with ^<99m>Tc-labelled red blood cells (RBC) were subtracted for observing a site of gastrointestinal bleeding and calculating the bleeding rate. This method is technically very easy and can detect the site of bleeding with the minimum rate, as low as 0.2ml/min., in a phantom experiment. In 23 cases with final diagnosis of gastrointestinal bleeding, conventional non-subtraction scintigraphy detected only 30% (7/23), but subtraction scintigraphy detected 61% (14/23). It was concluded that subtraction scintigraphy had higher sensitivity than conventional scintigraphy for early diagnosing of bleeding. A combination of nonsubtraction and subtraction scintigraphy is recommended to detect a site of gastrointesitinal bleeding in a clinical setting.

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 394-403
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501435

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 404-422
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501436

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 423-452
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501437

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 453-456
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501438

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 456-458
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501439

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 458-459
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501440

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 460-462
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501441

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 462-465
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501442

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[title in Japanese]

[in Japanese], [in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 465-468
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501443

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 468-470
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501444

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese], [in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 471-474
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501445

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 475-483
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501446

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages 484-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501447

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A NEW TECHNIQUE FOR POSITIONING TANGENTIAL FIELDS, James M. Galvin, D. Sc., et. al, Int. J. Radiation Oncology Biol. Phys., 26, (5), 877-881, (1993)

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 484-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501448

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Automated selection of regions of interest for quantitative analysis of lung textures in digital chest radiographs, Xuan Chen et. al, Medical Physics, 20, (4), 975-982, (1993)

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 484-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501449

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Motor cortex stimulation measured by magnetic resonance imaging on a standard 1.5T clinical scanner, Lothar R. S., et. al., Magnetic Resonance Imaging, 11, 461-464, (1993)

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 484-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501450

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages 485-486
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501451

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages 487-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501452

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages 488-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501453

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages 488-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501454

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages App5-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501455

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages 1-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501457

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 2-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501458

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[title in Japanese]

[in Japanese]

Article type: Article
1994 Volume 50 Issue 3 Pages 2-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501459

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages 3-22
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501460

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages 23-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501461

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages 23-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501462

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[title in Japanese]

Article type: Appendix
1994 Volume 50 Issue 3 Pages App6-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501463

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[title in Japanese]

Article type: Cover
1994 Volume 50 Issue 3 Pages Cover12-
Published: March 01, 1994
Released on J-STAGE: June 29, 2017

DOIhttps://doi.org/10.6009/jjrt.KJ00003501464

JOURNAL FREE ACCESS

Download PDF (728K)

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