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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 309 (1984), S. 354-356 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In our experiments we used guinea pig ventricular single myocytes, dissociated by treatment with collagenase8'9 (0.04%; Sigma type I). In the inside-out patch clamp experiments, at least three types of single-channel activities were observed with a pipette solution containing 150 mM KC1. One type ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 57 (1981), S. 121-127 
    ISSN: 0942-0940
    Keywords: Meningioma ; third ventricle ; computed tomography ; operative procedure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors report a rare case of a giant meningioma in the third ventricle operated on by the transcallosal approach following bifrontal craniotomy. The CT findings and the operative procedures are discussed.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1459
    Keywords: Carotid artery occlusion ; Collateral circulation ; Krypton-81m ; Emission tomography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Zerebrale Perfusionsbilder wurden bei Patienten mit Halsschlagaderverschluß untersucht. Dazu wurde eine Infusion mit Krypton 81m in die A. carotis comm., A. carotis int. und in die A. vertebralis vorgenommen und dann computergesteuerte Einzelphotonenemissionstomogramme angefertigt. Analysiert wurde, welchen Beitrag der Gefäßkranz an der Hirnbasis und die Anastomosen der Großhirnrinde leisten, um eine angemessene Blutversorgung des betroffenen Gebietes aufrechtzuerhalten. Man kam zu dem Schluß, daß das zerebrale Perfusionsbild in der Abschätzung von Nebenkreisläufen der Angiographie überlegen ist. Im Fall eines Halsschlagaderverschlusses ist der Gefäßkranz an der Hirnbasis von Bedeutung, einen Infarkt im Gebiet der perforierenden Arterien zu verhüten, während die Großhirnrinde vorwiegend über die Anastomosen der weichen Hirnhaut mit Blut versorgt wird, was die Hauptrolle der Anastomosen der weichen Hirnhaut beweist.
    Notes: Summary Cerebral perfusion images were investigated in patients with carotid artery occlusion, using single photon emission computed tomography with the infusion of krypton-81m into the internal, common carotid and vertebral arteries. The contribution of the circle of Willis and cerebral cortical anastomoses to the maintenance of adequate blood supply into the involved hemisphere was analysed. It was concluded that the cerebral perfusion image is superior to angiography in evaluating collateral circulation, and in the case of carotid occlusion, the circle of Willis is important in preventing infarction in the territory of the perforating arteries, while the cerebral cortex mainly receives its blood supply through the cortical leptomeningeal anastomoses, illustrating the major role of the leptomeningeal anastomosis as a collateral channel.
    Type of Medium: Electronic Resource
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