Zusammenfassung
Nach wie vor zählen kardiovaskuläre Erkrankungen zu den häufigsten Todesursachen in den westlichen industrialisierten Ländern. Die 5 häufigsten Todesursachen in Deutschland sind alle mit arteriosklerotischen Veränderungen des Gefäßsystems vergesellschaftet. Die arteriosklerotischen Veränderungen der peripheren Gefäße stellen durch ihre teilweise langfristige Behandlung sowie die mögliche Einschränkung der Arbeitsfähigkeit der Patienten einen nicht unerheblichen wirtschaftlichen Faktor dar. Diese Tatsachen lassen ein Screening nach Erkrankungen des arteriosklerotischen Formenkreises sinnvoll erscheinen, da bekanntermaßen Gefäßveränderungen in einem frühen, teilweise noch asymptomatischen Stadium deutlich besser beeinflusst werden können als zu einem späten, bereits symptomatischen Zeitpunkt. Nicht immer ist hier eine kurative Therapie möglich, das Voranschreiten der Erkrankung kann jedoch häufig verlangsamt werden.
Eine Limitation bei der Darstellung des arteriellen Gefäßsystems war bisher die Notwendigkeit invasiver, teilweise mit ionisierender Strahlung verbundener Untersuchungen. Nichtinvasive, klinische Untersuchungen, wie z. B. der „ankle brachial index“ (ABI) als Indikator einer peripheren arteriellen Verschlusskrankheit (PAVK), können nur einen Hinweis auf das Vorliegen arteriosklerotischer Veränderungen liefern. Eine genaue Lokalisation bzw. die Beurteilung des Ausmaßes einzelner Veränderungen sind mit diesen Methoden nicht möglich.
Im Gegensatz hierzu bietet die MRT die Möglichkeit der nichtinvasiven und trotzdem sehr genauen Gefäßbildgebung.
Abstract
Cardiovascular disease still ranks number one in the mortality statistics in the industrialized world. In Germany the five most common causes of death are all associated with arteriosclerotic changes of the arterial vasculature. As the treatment often extends over long periods and it can be impossible for patients to work, peripheral arterial occlusive disease (PAOD) constitutes a not inconsiderable economic factor. Thus, screening for arteriosclerotic disease seems to be reasonable, because the potential for influencing arteriosclerotic changes is known to be higher in an early stage of the disease even before symptoms become apparent. Not every case can be cured, but progression can frequently be slowed down.
The need for invasive procedures, some of them associated with ionizing radiation, limited the use of imaging of the arterial vasculature for a long time. Noninvasive clinical examinations such as the “ankle brachial index” (ABI) can indicate the presence of PAOD, though exact localization of the pathologic changes is not possible except with imaging methods. In contrast to these, MRI is a noninvasive imaging modality that does not involve ionizing radiation but offers high spatial resolution arterial imaging.
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Kramer, H., Weckbach, S., van Kaick, G. et al. Screening bei Herz- und Gefäßkrankheiten. Radiologe 48, 52–62 (2008). https://doi.org/10.1007/s00117-007-1607-4
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DOI: https://doi.org/10.1007/s00117-007-1607-4