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Erschienen in: Der Nervenarzt 8/2009

01.08.2009 | Übersichten

Diagnostik von Schlaganfallursachen

Morphologische und funktionelle MRT-Darstellung der Aorta und der Karotiden

verfasst von: Dr. A. Harloff, M. Markl, A. Frydrychowicz, J. Hennig, C. Weiller

Erschienen in: Der Nervenarzt | Ausgabe 8/2009

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Zusammenfassung

Strategisch wichtige Bereiche wie der Aortenbogen, der Ursprung aller hirnversorgenden Arterien ist, können wegen der artefaktarmen Visualisierung der thorakalen Aorta zuverlässiger mit der MRT als mit der transösophagealen Echokardiographie dargestellt werden. Dadurch können bei Patienten mit kryptogener Schlaganfallursache zusätzliche Hochrisikoemboliequellen wie komplexe Plaques der Aorta nachgewiesen werden. Kombiniert mit der flusssensitiven 4D-MRT ist es zudem möglich, den Blutrückstrom von komplexen Plaques der Aorta descendens in den Aortenbogen direkt zu zeigen und als Auslöser für embolische Hirninfarkte zu identifizieren. Auch in den Karotiden kann MR-tomographisch die 3-dimensionale Blutströmung erfasst und mit der Gefäßanatomie korreliert werden. Dies ermöglicht neben der Visualisierung des komplexen Helixflusses der Arteria carotis interna auch die Messung absoluter Geschwindigkeiten und die Berechnung der lokalen Wandschubspannung. Ziel dieser Arbeit ist es, einen Überblick über die aktuelle MRT-Methodik zu geben und zu zeigen, wie hiermit Schlaganfallursachen und der Einfluss individueller hämodynamischer Parameter auf die lokale Atherogenese evaluiert werden können.
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Metadaten
Titel
Diagnostik von Schlaganfallursachen
Morphologische und funktionelle MRT-Darstellung der Aorta und der Karotiden
verfasst von
Dr. A. Harloff
M. Markl
A. Frydrychowicz
J. Hennig
C. Weiller
Publikationsdatum
01.08.2009
Verlag
Springer-Verlag
Erschienen in
Der Nervenarzt / Ausgabe 8/2009
Print ISSN: 0028-2804
Elektronische ISSN: 1433-0407
DOI
https://doi.org/10.1007/s00115-009-2679-3

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