Chasing the zebra. The quest for the origin of a stripe artifact in diffusion-weighted MRI

M. Meyer*, A. Biber, M. A. Koch

*Corresponding author for this work

Abstract

We investigated a stripe artifact in diffusion weighted MRI on a clinical system. It manifests itself as a periodical variation in the global intensity level of the imaged slices, where every n-th slice position is associated with higher intensity. Several measurements with varying scan parameters were conducted to analyze the artifact. The origin of the artifact has been found to be a correction for the field drift effect which inserts a delay between each measurement of a diffusion direction. Deactivating this correction may lead to a reappearing fat signal or mislocation of voxels during longer measurements. Conducting a measurement of 30 minutes with deactivated field drift correction showed no such problems. It is therefore advisable to avoid activating the field drift correction at least for scans shorter than 30 minutes to prevent this kind of artifact from appearing.

Original languageEnglish
JournalBiomedizinische Technik
Volume59
Pages (from-to)S535-S538
ISSN0013-5585
DOIs
Publication statusPublished - 01.01.2014

Fingerprint

Dive into the research topics of 'Chasing the zebra. The quest for the origin of a stripe artifact in diffusion-weighted MRI'. Together they form a unique fingerprint.

Cite this