Stair step artifacts

Research output: Chapter in Book/Report/Conference proceedingChapter


Imaging description Stair step artifact is seen on multiplanar (coronal and sagittal) and three-dimensional reformatted CT images, when wide collimations and nonoverlapping reconstruction intervals are used [1]. It is seen as low-attenuation lines around the edges or traversing vessels, giving them the appearance of a series of steps. This artifact is more pronounced when wide collimations and nonoverlapping reconstruction intervals are used. The artifact is accentuated by cardiac and respiratory motion (Figure 83.1). Importance Failure to recognize this artifact could result in a misdiagnosis of pulmonary embolism.

Original languageEnglish (US)
Title of host publicationPearls and Pitfalls in Thoracic Imaging
Subtitle of host publicationVariants and Other Difficult Diagnoses
PublisherCambridge University Press
Number of pages1
ISBN (Electronic)9780511977701
ISBN (Print)9780521119078
StatePublished - Jan 1 2011

ASJC Scopus subject areas

  • Medicine(all)

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  • Cite this

    Sykes, A. M. (2011). Stair step artifacts. In Pearls and Pitfalls in Thoracic Imaging: Variants and Other Difficult Diagnoses (Vol. 9780521119078). Cambridge University Press.