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  • 3D chemical-shift-selective imaging  (2)
  • Pattern stimulation  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Three-dimensional chemical shift-selective MRI of a ruptured intracranial dermoid cyst (1996)
    Springer
    Neuroradiology 38 (1996), S. 572-574 
    Details
    ISSN: 1432-1920
    Keywords: Key words Intracranial dermoid cyst ; 3D chemical-shift-selective imaging ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a man with a ruptured intracranial dermoid cyst, suffering from headache, nausea, vomiting and a generalised seizure. MRI was performed before and 2 weeks after surgical resection. On T 1-weighted images the tumour gave high signal, as did fatty material in the frontal and parietal brain sulci. Identification of this hyperintense material as lipids was possible by chemical-shift-selective 3 D gradient-echo imaging, which provided excellent contrast between the subarachnoid lipids and the adjacent normal brain, with a good spatial resolution. Possible complications of subarachnoid and intraventricular lipid particles after dermoid cyst rupture are discussed and the diagnostic value of 3 D chemical-shift-selective additional to conventional T 1-weighted spin-echo images in identification of even small amounts of fat is emphasised.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00626102
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Three-dimensional chemical shift-selective MRI of a ruptured intracranial dermoid cyst (1996)
    Springer
    Neuroradiology 38 (1996), S. 572-574 
    Details
    ISSN: 1432-1920
    Keywords: Intracranial dermoid cyst ; 3D chemical-shift-selective imaging ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a man with a ruptured intracranial dermoid cyst, suffering from headache, nausea, vomiting and a generalised seizure. MRI was performed before and 2 weeks after surgical resection. On T1-weighted images the tumour gave high signal, as did fatty material in the frontal and parietal brain sulci. Identification of this hyperintense material as lipids was possible by chemical-shift-selective 3 D gradient-echo imaging, which provided excellent contrast between the subarachnoid lipids and the adjacent normal brain, with a good spatial resolution. Possible complications of subarachnoid and intraventricular lipid particles after dermoid cyst rupture are discussed and the diagnostic value of 3 D chemical-shift-selective additional to conventional T1-weighted spin-echo images in identification of even small amounts of fat is emphasised.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00626102
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Interactions of adaptation and masking in the guinea pig cochlea (1982)
    Springer
    European archives of oto-rhino-laryngology and head & neck 234 (1982), S. 197-202 
    Details
    ISSN: 1434-4726
    Keywords: Cochlear adaptation ; Pattern stimulation ; Preceding tone bursts ; Variable frequencies ; Delay time ; Additional adaptation ; Masking ; Summating potential
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Fast cochlear adaptation and masking phenomena, expressed as percent inhibition of the summed action potential, are studied from the guinea pig cochlea responses to click trains and tone bursts given previously or simultaneously to the click sequence. After preceding tone bursts, the click responses are superposed by inhibitory aftereffects dependent on the tone frequency. With interposed tone bursts, the click sequence response is masked, dependent on tone frequency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00453631
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Cochlear responses to dynamic click patterns in the guinea pig (1981)
    Springer
    European archives of oto-rhino-laryngology and head & neck 230 (1981), S. 229-235 
    Details
    ISSN: 1434-4726
    Keywords: Cochlear adaptation ; Pattern stimulation ; Summed action potential ; Dynamical responses ; Rate sensitivity ; Inhibition ; Facilitation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Fast cochlear adaptation, expressed as percent inhibition of the summed action potential, is studied from the guinea pig cochlea responses to click trains, ramps, and steps in both directions. The transition time function of adaptation to constant click trains does not depend on click strength, but rather on click interval. On the background of steady state adaptation, click steps produce only transient changes of the adaptive state, opposite to step direction. Compared to constant train stimulation, adaptation is enhanced by descending click ramps, and diminished or reversed (near threshold) by ascending ramps.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00456323
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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