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  • 1
    Electronic Resource
    Electronic Resource
    Imaging in the trilateral retinoblastoma syndrome (1996)
    Springer
    Neuroradiology 38 (1996), S. 166-170 
    Details
    ISSN: 1432-1920
    Keywords: Key words Trilateral retinoblastoma ; Pineal ; Magnetic resonance imaging ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The medical records, CT, and MRI of ten children with trilateral retinoblastoma were reviewed. The intracranial pathology consisted of eight pineal neoplasms and two parasellar lesions, at least seven of the which were calcified. Two lesions demonstrated calcification only (no soft tissue mass) at initial presentation. Hydrocephalus was seen in eight cases, and concurrent or subsequent subarachnoid dissemination was documented in seven. Only one patient is known to be alive at the present time. The imaging features of the midline intracranial tumors mirror those of the ocular neoplasm. As calcification may be the only clue to the presence of the intracranial malignancy, close surveillance of high-risk patients with retinoblastoma with initial CT and follow-up MRI is suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00604810
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Imaging in the trilateral retinoblastoma syndrome (1996)
    Springer
    Neuroradiology 38 (1996), S. 166-170 
    Details
    ISSN: 1432-1920
    Keywords: Trilateral retinoblastoma ; Pineal ; Magnetic resonance imaging ; Computed tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The medical records, CT, and MRI of ten children with trilateral retinoblastoma were reviewed. The intracranial pathology consisted of eight pineal neoplasms and two parasellar lesions, at least seven of the which were calcified. Two lesions demonstrated calcification only (no soft tissue mass) at initial presentation. Hydrocephalus was seen in eight cases, and concurrent or subsequent subarachnoid dissemination was documented in seven. Only one patient is known to be alive at the present time. The imaging features of the midline intracranial tumors mirror those of the ocular neoplasm. As calcification may be the only clue to the presence of the intracranial malignancy, close surveillance of high-risk patients with retinoblastoma with initial CT and follow-up MRI is suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00604810
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    MRI of orbital hydroxyapatite implants (1996)
    Springer
    Neuroradiology 38 (1996), S. 273-277 
    Details
    ISSN: 1432-1920
    Keywords: Hydroxyapatite orbital implant ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Our aim was to use MRI for the postsurgical assessment of a new form of integrated orbital implant composed of a porous calcium phosphate hydroxyapatite substrate. We studied ten patients 24–74 years of age who underwent enucleation and implantation of a hydroxyapatite ball; 5–13 months after surgery, each patient was examined by spinecho MRI, with fat suppression and gadolinium enhancement. Fibrovascular ingrowth was demonstrated in all ten patients as areas of enhancement at the periphery of the hydroxyapatite sphere that extended to the center to a variable degree. The radiologist should aware of the MRI appearances of the coralline hydroxyapatite orbital implant since it is now widely used following enucleation. MRI is a useful means to determine successful incorporation of the substrate into the orbital tissues. The normal pattern of contrast enhancement should not be mistaken for recurrent tumor or infection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00596547
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    MRI of orbital hydroxyapatite implants (1996)
    Springer
    Neuroradiology 38 (1996), S. 273-277 
    Details
    ISSN: 1432-1920
    Keywords: Key words Hydroxyapatite orbital implant ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Our aim was to use MRI for the postsurgical assessment of a new form of integrated orbital implant composed of a porous calcium phosphate hydroxyapatite substrate. We studied ten patients 24–74 years of age who underwent enucleation and implantation of a hydroxyapatite ball; 5–13 months after surgery, each patient was examined by spin-echo MRI, with fat suppression and gadolinium enhancement. Fibrovascular ingrowth was demonstrated in all ten patients as areas of enhancement at the periphery of the hydroxyapatite sphere that extended to the center to a variable degree. The radiologist should aware of the MRI appearances of the coralline hydroxyapatite orbital implant since it is now widely used following enucleation. MRI is a useful means to determine successful incorporation of the substrate into the orbital tissues. The normal pattern of contrast enhancement should not be mistaken for recurrent tumor or infection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00596547
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Photochemical degradation of cellulose material (1969)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 122 (1969), S. 134-144 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Cellulose wurde mit ultraviolettem Licht bestrahlt. Der Abbau wurde viskosimetrisch und durch Messung des Gewichtsverlustes verfolgt. Veränderungen in Polymerisationsgrad und Gewicht des bestrahlten Materials deuten darauf hin, daß der Abbau statistisch nach einer Reaktion erster Ordnung verläuft. Es wird die Möglichkeit erwogen, daß Kettenspaltung der primäre Prozeß ist, der Glucose und Oligosaccharide liefert. Gaschromatographie der flüchtigen Abbauprodukte zeigt die Anwesenheit von Acetaldehyd, Propionaldehyd, Ameisensäuremethylester, Aceton, Methanol, äthanol, Methan und äthan, die in früheren Arbeiten nicht erwäfhnt sind. Diese Verbindungen sind möglicherweise durch weiteren Abbau der Glucose und der Oligosaccharide entstanden.
    Notes: Cellulose has been irradiated by ultraviolet light. The degradation was followed viscometrically and by weight loss measurements. The changes in the degree of Polymerization and weight of the irradiated material indicated that the degradation is random and follows first order kinetics. It is suggested that chain scission is the primary process yielding glucose and oligosaccharides. Gas chromatography of the volatile products indicated the presence of acetaldehyde, propionaldehyde, methyl formate, acetone, methanol, ethanol, methane and ethane which have not been reported in earlier studies. These compounds could result from further degradation of glucose and oligosaccharides formed during the initial chain scission process.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1969.021220111
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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