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  • 1
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Magnetresonanztomographie ; MRT ; Haut ; In-vivo-Histometrie ; Tumore ; Keywords MRT ; Skin ; Thickness ; Dermatology ; Tumors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Purpose: To characterize human skin qualitatively and quantitatively using high-resolution magnetic resonance tomography (MRT) and to compare skin thickness measurements from MRT and histological specimens. Material and Methods: The skin of 84 persons was examined by use of a 2.5 cm coil in a whole-body tomography (gradient field strength 1.5 T) at a linear resolution of 100 μm. To evaluate the ability to identify various skin structures, following an initial visual description, the signal-noise and contrast-noise ratios were analyzed and the MRT-image compared to the corresponding histological specimen. Results: Using the high-resolution coil, epidermis, dermis and subcutis were discernible. Problem areas included the cheek, distal leg and foot. Reproducible measuring of skin thickness with MRT is possible, but it does not correlate well with conventional histologic measurements.
    Notes: Zusammenfassung Ziel: Anhand von In-vivo-Untersuchungen war die Schnittbildanatomie der Haut hinsichtlich ihrer bislang unbekannten Erscheinung im hochauflösenden Magnetresonanztomogramm (MRT) zunächst qualitativ und quantitativ zu charakterisieren. Anschließend sollte der Wert der MRT hinsichtlich der Hautdickenmessung anhand eines Vergleiches mit histologischen Schnitten analysiert werden. Methodik: In einer prospektiven Studie wurde die Haut von 84 Personen mit Hilfe eines 2,5 cm großen Spulenkopfes in einem Ganzkörpertomographen (Gradientenfeldstärke: 1,5 T) bei einer linearen Auflösung von 100 μm untersucht. Zur Bewertung der Abgrenzbarkeit verschiedener Hautstrukturen wurden nach visueller Charakterisierung deren Signal-Rausch- und deren Kontrast-Rausch-Verhältnisse objektiviert und ein Vergleich mit histologischen Präparaten vorgenommen. Ergebnisse: Mit der Hochauflösungsspule lassen sich Epidermis, Dermis und Subkutis differenzieren (p〈0,05). Problematisch ist dies nur an Wange, distalem Unterschenkel und Fuß. Hautdickenmessungen mit der MRT sind zuverlässig möglich. Die Ergebnisse korrelieren aber nicht mit jenen der Histologie.
    Type of Medium: Electronic Resource
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  • 2
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    Meisenheim, etc. : Periodicals Archive Online (PAO)
    Zeitschrift für philosophische Forschung. 43:2 (1989:Apr./Juni) 347 
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  • 3
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    Meisenheim, etc. : Periodicals Archive Online (PAO)
    Zeitschrift für philosophische Forschung. 36:2 (1982:Apr./Juni) 262 
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  • 4
    facet.materialart.
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    Meisenheim, etc. : Periodicals Archive Online (PAO)
    Zeitschrift für philosophische Forschung. 39:3 (1985:Juli/Sept.) 431 
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Studies in East European thought 38 (1989), S. 203-236 
    ISSN: 1573-0948
    Source: Springer Online Journal Archives 1860-2000
    Topics: Philosophy
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal for general philosophy of science 16 (1985), S. 304-314 
    ISSN: 1572-8587
    Source: Springer Online Journal Archives 1860-2000
    Topics: Philosophy , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Summary The method of citation analysis has been elaborated by E. Garfield for the purpose of documentation of scientific literature. The data accumulated in “Citation Indices” can also be used as an empirical basis for certain investigations in the field of science of science. Techniques of citation analysis (e.g. the calculation of citation rates or the co-citation-analysis) permit measurements of information activities of scientists. We refuse overdrawn interpretations of the results of citation analyses, for instance the indication of “scientific quality” or of “thematico-technical relations between ideas, problems etc.”.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Axiomathes 7 (1996), S. 61-73 
    ISSN: 1572-8390
    Source: Springer Online Journal Archives 1860-2000
    Topics: Philosophy
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Diseases of the colon & rectum 39 (1996), S. 30-36 
    ISSN: 1530-0358
    Keywords: Stapler ; Leakage rate ; Colorectal resection ; Protective colostomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: Stapled anastomoses are currently an established technique in colorectal surgery. Larger series about the use of circular staplers in rectal anastomoses within daily clinical routine are rare. METHODS: We evaluated the morbidity, clinical leakage rate, and mortality in an unselected population of a teaching hospital after elective, left-sided colorectal resections with stapled rectal anastomoses. In the course of our study, manually sewn rectal anastomoses were not performed. All anastomoses were tested intraoperatively by instillation of liquid. RESULTS: A total of 615 elective colorectal resections with stapled rectal anastomoses was performed by 18 surgeons from 1984 to 1993. A protective colostomy was created in 2.9 percent (n=16) of all patients. Clinical anastomotic leakage occurred in nine patients (1.5 percent). The mortality rate was 1 percent (n=6). CONCLUSION: Use of the stapling technique facilitates the performance of anastomoses, particularly in regions with difficult anatomy. The rate of local complications is low, and protective colostomy can thus be dispensed with in most cases.
    Type of Medium: Electronic Resource
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