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DOI: 10.1055/s-0043-117248
Nicht invasive MR-Angiografien der großen und kleinen herznahen Gefäße
Publication History
Publication Date:
19 October 2017 (online)
Die kardiovaskuläre MRT ist ein mittlerweile im klinischen Alltag etabliertes diagnostisches Instrument bei vielen kardiovaskulären Fragestellungen. Ein wichtiges Werkzeug sind hierbei verschiedene Methoden zur MR-Angiografie (MRA), die invasive oder CT-Angiografien (CTA) zum Teil bereits ersetzen konnten. Diese Arbeit gibt einen Überblick über die wichtigsten klinischen Anwendungen der MRA im Bereich der herznahen Gefäße.
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Die kontrastmittelverstärkte MR-Angiografie ist weiterhin die Referenzmethode zur Gefäßdarstellung in der MRT, es sollten aber immer kontrastmittelfreie Techniken als Alternative erwogen werden.
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Kontrastmittelfreie MR-Techniken erlauben neben einer oft gleichwertigen anatomischen Gefäßdarstellung auch eine Beurteilung der Gefäßwand, der Lagebeziehung zu umgebenden Strukturen und eine funktionelle Beurteilung von Blutflussgeschwindigkeiten und -volumina.
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Neben der MR-Aortografie zur Diagnostik und Verlaufskontrolle von Aneurysmen und anderen Aortenerkrankungen sind Abgangsanomalien der Koronararterien, die Anatomie und Funktion von Pulmonalvenen, Shuntvitien und Vaskulitiden weitere Indikationen der MR-Angiografie.
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