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  • 1
    Digitale Medien
    Digitale Medien
    Hepatic imaging studies on patients with visceral larva migrans due to probable Ascaris suum infection (1999)
    Springer
    Abdominal imaging 24 (1999), S. 465-469 
    Details
    ISSN: 1432-0509
    Schlagwort(e): Key words: Visceral larva migrans (VLM)—Ascaris suum—Ultrasound tomography (UST)—Computed tomography (CT)—Magnetic resonance imaging (MRI)—Radioisotope (RI) scans—Laparoscopy.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Visceral larva migrans (VLM) is a disease usually observed in children in which the larvae of animal parasites invade and reside in human tissues for long periods. Although the common causal species of VLM are Toxocara canis and T. cati, we identified three adult patients with VLM, probably due to Ascaris suum, whose diagnosis was made by specific immunoserological tests. The patients complained of respiratory symptoms, and laboratory tests showed pronounced eosinophilia, but neither larvae nor eggs were detected in stool samples. We present the findings of various imaging studies of the patients. Multiple small hypoechoic mass lesions were demonstrated by ultrasound tomography, which disappeared after anti-helminthic therapy. Hepatic mass lesions were detected as low-density areas on computed tomography, as high signal intensities on T2-weighted magnetic resonance images, as space-occupying regions in liver scintigraphy, and as yellow-white nodules in laparoscopy. Although biopsied liver tissue specimens showed marked infiltrations of eosinophiles in the portal tracts and hepatic sinusoids, neither larvae nor eggs could be identified.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002619900541
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Neutron flux gradients and spectrum changes in the irradiation capsule for reactor neutron activation analysis (1997)
    Springer
    Journal of radioanalytical and nuclear chemistry 216 (1997), S. 95-99 
    Details
    ISSN: 1588-2780
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Energietechnik
    Notizen: Abstract In order to improve the accuracy of reactor neutron activation analysis, flux gradients and spectrum changes in the irradiation capsule have been studied at the Kyoto University Reactor (KUR). The flux and spectrum monitoring samples of Fe, Co, Au, Sb, U and Ni were placed at several positions in a polyethylene irradiation capsule of 24 mm inner diameter and 98 mm length, and were irradiated in a pneumatic irradiation facility (Pn-2). The flux gradients were found to be rather negligible in the vertical (axial) direction while they were considerable in the radial one. The flux gradient was around 5%/cm for thermal neutrons and 10%/cm for epithermal and fast neutrons. The spectrum changes were dependent on the materials (polyethylene and silica) filled in the capsule. Based on these observations, the effect of the flux gradients and spectrum changes on the accuracy of reactor neutron activation analysis was discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02034502
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