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. 2018 Jun 28;10(6):52–64. doi: 10.4329/wjr.v10.i6.52

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©The Author(s) 2018. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial.

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Artifacts: The Maki artifact. A: Acquisition of the central aspect of k-space was before the bolus of contrast agent filled the pulmonary artery causing a pseudo-clot within the left lower lobe pulmonary artery (arrow); B: Later phase acquisition from the same patient shows normal contrast enhancement of the Left lower lobe pulmonary artery (arrow); C: Gibbs’’ ringing artifact can simulate a central filling defect. Typically, the signal of emboli will be less than 50% of the signal intensity of the lumen.