Computed tomography angiography gravitational gradient as an imaging sign of slow flow

Michael Hanley, Dimitrios Mitsouras, Michael L. Steigner, Shadpour Demehri, Jason Signorelli, Kanako K. Kumamaru, Frank J. Rybicki

Research output: Contribution to journalArticle

Abstract

Intraluminal layering of iodinated contrast on a single axial computed tomography image is described as a possible sign of slow arterial flow and is quantified using a new region of interest-based metric, that is, gravitational gradient. The metric was measured in 4 patients who demonstrated this phenomenon and in the aorta of 10 patients with no clinical sign suggestive of slow flow. Future studies are needed to validate the relationship between gravitational gradient, slow flow, and patient outcome.

Original languageEnglish (US)
Pages (from-to)297-300
Number of pages4
JournalJournal of computer assisted tomography
Volume37
Issue number2
DOIs
StatePublished - Mar 1 2013
Externally publishedYes

Keywords

  • CT angiography
  • Gravitational gradient
  • Intraluminal contrast layering
  • Slow flow

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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  • Cite this

    Hanley, M., Mitsouras, D., Steigner, M. L., Demehri, S., Signorelli, J., Kumamaru, K. K., & Rybicki, F. J. (2013). Computed tomography angiography gravitational gradient as an imaging sign of slow flow. Journal of computer assisted tomography, 37(2), 297-300. https://doi.org/10.1097/RCT.0b013e31827bc476