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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 9 (1975), S. 1-8 
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les résultats de deux expériences conduites à l'aide d'un ordinateur utilisant les données digitalisées de l'absorption de rayons X fournies par un “EMI scanner” sont rapportés. Dans la première expérience sont comparés les tomogrammes obtenus d'après les mêmes données mais en utilisant différents algorithmes de reconstruction. Dans la seconde, sont comparés une série de tomogrammes obtenus avec le même programme mais en utilisant différentes projections ou différents points de mesure par projection. Dans le cas clinque étudié, les résultats montrent: 1. que tous les algorithmes de reconstruction utilisés ont donné des resultats similaires et tous sont satisfaisants du point de vue clinique. 2. que les tomogrames des sections obtenues avec moins de points de mesure restent cliniquement valables. La signification de ces résultats pour l'application de la tomographie computérisée axiale en neuroradiologie est discutée.
    Abstract: Zusammenfassung Bericht über zwei mittels eines Computers durchgeführten Experimente mit Projektionsdaten einer klinischen Untersuchung am EMI-Scanner. Beim ersten Experiment wurden mittels verschiedener Rekonstruktions-Algorhythmen gewonnene Schnittbilder verglichen. Beim zweiten Experiment wurde einer der beschriebenen Rekonstruktions-Algorhythmen dazu verwendet, um die Qualität des rekonstruierten Gehirnquerschnittes in Abhängigkeit von der Anzahl der verwendeten Projektionen sowie der Anzahl Meßwerte pro Projektionen zu zeigen. Das den Experimenten zugrundegelegte klinische Beispiel gestattet folgende Feststellungen: 1. Alle geprüften Rekonstruktions-Algorhythmen führten zu neuroradiologisch gleichermaßen befriedigenden Ergebnissen. 2. Rekonstruktionsbilder von annähernd gleicher klinischer Aussagekraft können auch mit einer reduzierten Menge von Eingabedaten erhalten werden. Die Bedeutung dieser Ergebnisse für die Anwendung der computerisierten axialen Tomographie in der neuroradiologischen Praxis werden diskutiert.
    Notes: Abstract The results of two computational experiments, performed on digitised X-ray absorption data measured by the EMI scanner, are reported. In the first experiment tomograms reconstructed from the same data, but using different reconstruction algorithms, were compared. In the second, a comparison was made between tomograms reconstructed by one of the programs using different amounts of data as input. For the particular example studied, the results showed that: 1. all algorithms gave equally satisfactory results from a clinical point of view, and that 2. equally usable tomograms could be obtained with fewer measurements. The possible significance of such results in the application of computerised axial tomography in clinical neuroradiology is discussed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 56 (1978), S. 493-496 
    ISSN: 1432-1440
    Keywords: Determination of digoxin ; Enzyme immunoassay ; Radioimmunoassay ; Hemolysis ; Hyperlipidemia ; Uremia ; Hyperbilirubinemia ; Digoxinbestimmung ; Enzymimmunoassay ; Radioimmunoassay ; Hämolyse ; Hyperlipämie ; Urämie ; Hyperbilirubinämie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Digoxin-Konzentrationen in Patientenseren wurden parallel mittels Enzymimmunoassay (EMIT-EIA) und Radioimmunoassay (RIA,125J markiert) bestimmt und die Ergebnisse miteinander verglichen. Im unselektierten Patientenmaterial (n=104) bestanden teilweise erhebliche Bestimmungsunterschiede; die mit dem EIA gemessenen Konzentrationen waren signifikant kleiner (1,09±0,99 ng/ml für EIA, 1,34±1,01 ng/ml für RIA,p〈0,01). Hämolytische, lipämische und urämische Seren hatten falsch negative Ergebnisse im EIA; nach Elimination dieser Seren resultierte eine gute Übereinstimmung der Meßwerte mit beiden Methoden (1,12±1,01 ng/ml für EIA, 1,12±1,02 ng/ml für RIA,r=0,95,n=63).
    Notes: Summary The results of parallel determinations of digoxin in the sera of non selected patients (n=104) by enzyme immunoassay (EMIT-EIA) and radioimmunoassay (J-125 labeled RIA) were compared with each other. The determinations revealed considerably different concentrations; the values determined by EIA were statistical lower (for EIA 1.09±0.99 ng/ml, for RIA1.34 ±1.01 ng/ml,p〈0.01). In sera with hemolysis and in sera of patients with hyperlipidemia and uremia false-negative results were found by EIA. After elimination of these sera an exact concordation of the values of both the methods was obtained (for EIA 1.12±1.01 ng/ml, for RIA 1.12±1.02 ng/ml,r=0.95).
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 55 (1977), S. 1005-1011 
    ISSN: 1432-1440
    Keywords: Bone mineral analyzer ; Bone mineral analysis in renal osteodystrophy ; Bone demineralization in renal failure ; Photon absorptiometry in renal osteodystrophy ; Bone densitometry in renal osteopathy ; Knochenmineralanalysator ; Knochenmineralgehalt bei renaler Osteopathie ; Photonen-Absorptionstechnik
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Mit Hilfe der Photonenabsorptionstechnik nach dem Verfahren von Cameron und Sorenson wurde die Knochendichte bei 58 Patienten im Prädialysestadium und 58 Patienten im Dauerdialyse-Programm bestimmt. Zusätzlich untersuchten wir den therapeutischen Effekt der Vitamin D3-Substitution bzw. der Verabreichung von 5,6-trans-25-OH-Vitamin D3 auf den Knochenmineralgehalt. Wir fanden eine Korrelation sowohl zwischen der Knochendichte und der Dauer der chronischen Niereninsuffizienz bzw. der Hämodialysebehandlung als auch der Höhe des Serum-Parathormonspiegels. Dagegen bestand keine Korrelation zwischen Knochendichte und Höhe des Serum-Calciumspiegels. Unter 14monatiger Behandlung mit Vitamin D3 bzw. 5,6-trans-25-OH-Vitamin D3 trat eine Zunahme der Knochendichte auf. Die Photonenabsorptionstechnik erwies sich als eine einfach durchführbare und gut reproduzierbare Methode zur Bestimmung des Knochenmine-ralgehaltes.
    Notes: Summary In 58 patients with end-stage renal failure before commencement of regular hemodialyses treatment (RTD) and 58 patients under RTD bone mineral content (BMC) was determined by the use of the photon absorptiometry. Further the effect of a treatment with vitamin D3 and 5,6-trans-25-OH-vitamin D3 on BMC was studied. There existed a negative correlation between the duration of chronic renal failure or of RDT as well as of the serum parathryoid hormone level to BMC. No correlation was found between BMC and serum calcium level. During a 14 months-course treatment with vitamin D3 or 5,6-trans-25-OH-vitamin D3 BMC increased. The method of photon absorptiometry presented itself as an easy and well reproducible tecnique for routine examinations.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 63 (1976), S. 224-230 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 66 (1979), S. 363-364 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
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    Unknown
    Berlin, etc. : Periodicals Archive Online (PAO)
    Philologus. 12 (1857) 531 
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  • 7
    facet.materialart.
    Unknown
    Berlin : Periodicals Archive Online (PAO)
    Deutsche Zeitschrift für Philosophie. 25:8 (1977) 905 
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  • 8
    facet.materialart.
    Unknown
    Berlin : Periodicals Archive Online (PAO)
    Deutsche Zeitschrift für Philosophie. 26:7 (1978) 923 
    ISSN: 0012-1045
    Topics: Philosophy
    Description / Table of Contents: REZENSIONEN
    Notes: Zum 9. Weltkongress für Soziologie: "Wege der sozialen Entwicklung" Uppsala, 14. - 19. August 1978
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 5 (1975), S. 347-350 
    ISSN: 1432-0630
    Keywords: Ion implantation ; Arsenic range ; Backscattering analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract MeV4He ion backscattering and differential sheet resistivity measurements were made on As implants into silicon at room temperature. Analysis of backscattering measurements yields the projected rangeR p and projected standard deviation ΔR p . Over the energy range of 50 to 250 keV, the values ofR p are found to agree well with LSS theoretical predictions; however, values of ΔR p are systematically higher than theoretical calculations. Backscattering and differential sheet resistivity measurements on samples annealed at 950°C are in general agreement and indicate diffusional broadening of the profile.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 10 (1976), S. 227-229 
    ISSN: 1432-1041
    Keywords: RIA for digoxin ; comparison between RIA's ; different results of RIA's ; sources of error with RIA's
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The quality and comparability of five RIA's available on the German market for determination of digoxin are tested in this paper. All RIA's produced varying results in the determination of digoxin concentration in the patients' sera. The mean values of the same sera showed differences from 1.413±0.782 ng/ml to 0.700±0.542 ng/ml. There are numerous sources of error with RIA's. Therefore each laboratory should work out and announce its own guideline values for the RIA used in regard to the optimal therapeutic range.
    Type of Medium: Electronic Resource
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