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  • 1
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The SYRMEP (synchrotron radiation in medical physics) Collaboration is planning to use a beam of monochromatic x-rays provided by Elettra, the synchrotron radiation facility in operation at Trieste (Italy), in conjunction with a novel silicon pixel detector to conduct research in digital mammography. A beamline dedicated to mammography is presently under construction in Trieste; it will provide, at a distance of about 20 m from an Elettra bending magnet, a monochromatic laminar-section (150×4 mm2) x-ray beam. This beam will illuminate in vitro samples and will be detected by a fixed silicon microstrip device forming a matrix of pixels. Digital images of phantoms having a size common in the diagnostic practice (150×150 mm2), can then be produced by scanning the sample itself in front of the detector. A prototype detector with a sensitive area of 24×1 mm2 and pixels of 0.5×0.5 mm2 has been built and tested. We present the current status of the SYRMEP beamline and a digital image of a mammographic phantom exposed to a radioactive x-ray source. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 15 (2001), S. 0 
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: The performance of a multi-stage activated-sludge plant with partial biomass recirculation was examined. The system, which was designed to treat domestic sewage, consists of four stages and has two recirculation flows: (a) directly into the anoxic stage, and (b) distributed over all the aerobic stages from the secondary settlement tank. Different values of recirculation flow to each aerobic stage were adopted during the experiments, and the optimal configuration for removing both ammoniaca! nitrogen and carbonaceous substrate was determined. The configuration which gave the best performance also improved the sludge settleability.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0168-9002
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 11 (1987), S. 23-28 
    ISSN: 1432-5195
    Keywords: Bone cysts ; Methylprednisolone acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs rapportent les résultats à long terme du traitement des kystes osseux solitaires par injection endo-cavitaire d'acétate de methylprednisolone (technique de Scaglietti). 18 patients ont été revus avec un recul de 9 à 11 ans après le début du traitement. Les résultats observés confirment la validité de cette technique en montrant un haut pourcentage de guérisons. Dans quelques cas, en cours de croissance, on a pu observer la reprise de l'activité ostéolytique après la guérison complète d'une lésion. Dans ces cas, la reprise rapide du traitement par l'acétate de methylprednisolone centré sur les nouvelles petites aires d'ostéolyse obtient la guérison. Ces observations portent les auteurs à penser qu'on ne peut jamais considérer comme complète et définitive la guérison d'un kyste osseux, quelques années après son traitement si la croissance du squelette n'est pas encore terminée. Un contrôle radiographique périodique est donc nécessaire pour reconnaître et traiter dès ses premiers signes une reprise de l'activité ostéolytique.
    Notes: Summary The long-term results are reported of the treatment of bone cysts by means of the injection of methylprednisolone acetate (MPA) into the bony cavity using Scaglietti's technique. Eighteen patients were reviewed at a follow-up of 9–11 years from the beginning of the treatment. The results confirm the value of this technique and show a high percentage of recovery. During the growth period, a recurrence of osteolytic activity in the lesion may be observed after complete healing, though this does not happen frequently. In these cases further prompt treatment with MPA injected into the small osteolytic areas brings about their complete resolution. These observations lead us to conclude that a bone cyst can never be considered completely healed before complete skeletal maturity is reached. Regular radiological reviews must be carried out in order to recognise and treat promptly the first signs of a recurrence of cystic activity.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Der Radiologe 40 (2000), S. 537-546 
    ISSN: 1432-2102
    Keywords: Schlüsselwörter Bildgebung chronischer Niereninfektionen ; Chronische Pyelonephritis ; Renal replacement Lipomatose ; Xantogranulomatöse Pyelonephritis ; Malakoplakie ; Nierentuberkulose ; Key words Imaging renal infections ; Chronic pyelonephritis ; Renal replacement lipomatosis ; Xantogranulomatous pyelonephritis ; Renal tuberculosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract From pathological point of view the chronic renal infections include two types, interstitial chronic pyelonephritis and granulomatous pyelonephritis, namely xantogranulomatous, malacoplachia and renal tuberculosis. Indications for imaging modalities are more common compared to the acute types and allow to depict both factors causing obstruction and infection such as stones ant the renal and extrarenal extension of the disease. In this article the authors review the findings and the role of plain film and urography, computed tomographie and ultrasonography.
    Notes: Zusammenfassung Aus pathologischer Sicht umfassen die chronischen Niereninfektionen 2 Hauptformen: die interstitielle chronische Pyelonephritis und die granulomatöse Pyelonephritis, namentlich die Xantogranulomatose, die Malakoplakie und die Nierentuberkulose. Indikationen für Untersuchungen mit bildgebenden Verfahren sind bei diesen chronischen Infektionen häufiger zu stellen als bei den akuten renalen Infektionen. Sie ermöglichen die Erfassung der als ursächlich für die Infektion angesehenen Harnwegsobstruktion, z. B. durch Steine, und die renale und extrarenale Ausbreitung der Erkrankung. In diesem Beitrag werden die Befunde und die Bedeutung der Röntgenleeraufnahme, der Urographie, der Computertomographie und der Sonographie besprochen.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1433-0350
    Keywords: Infant trauma ; Diastatic linear skull fracture ; Dural tear ; Post-traumatic leptomeningeal cyst ; Post-traumatic porencephaly ; Post-craniectomy ventricular enlargement ; Growing skull fracture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The growing skull fracture of childhood is a well-known but variously interpreted syndrome. Attempts have been made to find different pathogeneses for clinical and pathological patterns that are really successive phases of a single process, arising from the interaction of three basic conditions: (1) head injury with a large gaping fracture; (2) corresponding dural tear; (3) occurrence nearly always in infancy (the first year of life or period of maximum brain growth). This combination of factors alters the normal distribution of the intracranial pressure vectors and the fracture behaves like a “neosuture” with abnormal growth of the skull on the injured side. Simultaneously, the ventricular system tends to deform, dilating and shifting towards the side of the fracture. Three cases, successfully treated at a very late stage, are described. The good surgical results confirm the validity of the surgical method and its underlying theoretical basis.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0009-9120
    Keywords: AER ; diabetes mellitus ; diabetic nephropathy ; microalbuminuria ; radioimmunoassay ; urinary albumin
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0009-9120
    Keywords: AER ; diabetes mellitus ; diabetic nephropathy ; microalbuminuria ; radioimmunoassay ; urinary albumin
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
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    Milano : Periodicals Archive Online (PAO)
    Aevum. 48:3/4 (1974:magg./ag.) 270 
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  • 10
    ISSN: 1432-0533
    Keywords: Key words Basal lamina ; Blood-brain barrier ; Central nervous system ; Congenital muscular dystrophy ; Laminin α2
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Recently, a rare form of congenital muscular dystrophy has been shown to be associated with a deficiency of laminin α2 chain, a tissue-specific component of the basal lamina. Besides muscular dystrophy, children affected with this disorder also show electrophysiological and magnetic resonance imaging evidence of white matter involvement in the central nervous system (CNS). We have studied the precise localization of laminin α2 chain in normal human brain, using specific electron microscopic techniques including thin-section fracture labeling and cryoultramicrotomy, in parallel with immunohistochemical techniques. We found that this laminin chain was localized to the basal lamina of all cerebral blood vessels, whereas blood vessels of the choroid plexus did not show any reaction. No positive reaction was found in meningeal blood vessels either. We hypothesize that in normal brain, laminin α2 may be important for the selective filtration capability of the blood-brain barrier. The lack of laminin α2 in cerebral vessels of children with laminin α2-deficient congenital muscular dystrophy may cause impaired selective filtration, leading to leakage of plasma components and damage to the CNS. Further studies should be performed on patients affected by congenital muscular dystrophy associated with laminin α2 deficiency to test this hypothesis.
    Type of Medium: Electronic Resource
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