From A as in Aliasing to Z as in Zipper: Artifacts in MRI

A variety of artifacts may be encountered in MR images. They can be divided up into four major categories: (1) hardware-related artifacts, (2) sequence-related artifacts, (3) patient-related artifacts, and (4) artifacts of special MR techniques. This article discusses these types of artifacts, their derivations, their effects upon the MR image, and possible solutions to minimize them.ZusammenfassungIn MR-Bildern kann eine Vielzahl von Artefakten auftreten. Sie können vier großen Kategorien zugeordnet werden: 1. Hardware-bedingte Artefakte, 2. Sequenz-bedingte Artefakte, 3. von Patienten verursachte Artefakte und 4. Artefakte spezieller MR-Techniken. In diesem Artikel werden die oben genannten Haupttypen von Artefakten diskutiert. Dabei werden jeweils ihre Ursache und ihre Auswirkungen auf das MR-Bild erörtert und Wege aufgezeigt, wie man sie vermeiden oder zumindest minimieren kann.

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