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  • 1
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    Autoradiographic image intensification: applications in medical radiography (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1978-02-10
    Beschreibung: The image of an 80 to 90 percent underexposed medical radiograph can be increased to readable density and contrast by autoradiographic image intensification. The technique consists of combining the image silver of the radiograph with a radioactive compound, thiourea labeled with sulfur-35, and then making an autoradiograph from the activated negative.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Askins, B S -- New York, N.Y. -- Science. 1978 Feb 10;199(4329):684-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/625659" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Autoradiography/*methods ; Contrast Media ; Humans ; Mammography/methods ; Radiation Dosage ; *Radiographic Image Enhancement ; Radiography/methods ; Technology, Radiologic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Quantitative analysis of autoradiographic image intensification using Thiourea-S35 (1980)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-17
    Beschreibung: Photographic images enhanced by the method of Thiourea-S35 autoradiography are evaluated in terms of signal-to-noise ratio, detective quantum efficiency (DQE), and Wiener spectrum analysis using digitized images. It is determined that the original signal-to-noise ratio is not degraded by the intensification process which allows an increase in the practical working DQE as a function of density. These results apply at all spatial frequencies that were tested. The advantage given by autoradiography is the ability to produce usable images from emulsions originally exposed to the low densities corresponding to maximum DQE and movement of faint image densities above the level of the threshold for detection.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Astronomical Society of the Pacific; vol. 92
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    Photographic image intensification by autoradiography (1976)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-17
    Beschreibung: Images on developed photographic emulsions can be significantly intensified by making the image silver radioactive and exposing a second emulsion to this radiation. Because the print, an autoradiograph, reproduces the original with significant increases in density and contrast, the method can be used to enhance underexposed emulsions and to increase the limits of photographic detection. This paper reports a new, practical chemical method for activating the silver, using thiourea labeled with sulfur-35, a process convenient for use in photographic laboratories. Speed increases of 13 and contrast increases of 18 were achieved with Kodak Plus-X film in this initial phase.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Materialart: Applied Optics; 15; Nov. 197
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    Autoradiographic image intensification - Applications in medical radiography (1978)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-17
    Beschreibung: The image of an 80 to 90 percent underexposed medical radiograph can be increased to readable density and contrast by autoradiographic image intensification. The technique consists of combining the image silver of the radiograph with a radioactive compound, thiourea labeled with sulfur-35, and then making an autoradiograph from the activated negative.
    Schlagwort(e): MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Materialart: Science; 199; Feb. 10
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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    Post-development image intensification by autoradiography (1979)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-17
    Beschreibung: A method of post-development intensification of photographic images using a newly developed autoradiographic procedure is described. Radioactive Thiourea-S35 is combined with silver in the developed emulsion, which is then contact printed with a receiver emulsion. The beta decay from S35 produces an enhanced autoradiographic image. The laboratory technique is described and results of astronomical applications are presented.
    Schlagwort(e): ASTRONOMY
    Materialart: Astronomical Society of the Pacific; vol. 91
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
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    Autoradiographic enhancement of mammograms (1979)
    In:  Other Sources
    Details
    Publikationsdatum: 2011-08-17
    Schlagwort(e): MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Materialart: Radiology; 130; Jan. 197
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    Method of obtaining intensified image from developed photographic films and plates (1978)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-27
    Beschreibung: A method is explained of obtaining intensified images from silver images on developed photographic films and plates. The steps involve converting silver of the developed film or plate to a radioactive compound by treatment with an aqueous alkaline solution of an organo-S35 compound; placing the treated film or plate in direct contact with a receiver film which is then exposed by radiation from the activated film; and developing and fixing the resulting intensified image on the receiver film.
    Schlagwort(e): INSTRUMENTATION AND PHOTOGRAPHY
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
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    Image intensification of developed photographs (1977)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: Autographic technique intensifies image on developed film using organic sulfur compound. Organic sulfur compound combines with silver on original film. Beta emission of compound exposes new film. Technique is less time consuming and safer than existing methods.
    Schlagwort(e): PHYSICAL SCIENCES
    Materialart: MFS-23461 , NASA Tech Briefs (ISSN 0145-319X); 1; 4; P. 553
    Format: text
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