Re-circulation artefact at the carotid bulb can be differentiated from true stenosis

The British Journal of Radiology
K J AhnS T Hahn

Abstract

Re-circulation artefact developing secondary to vortex flow at the bulb of the internal carotid artery is very difficult to distinguish from true stenotic defect on two-dimensional Fourier transformed time-of-flight magnetic resonance angiography (2D-FT TOF MRA). The purpose of our study is to identify appropriate distinguishing features of re-circulation artefact. We included 45 extracranial carotid arteries collected from 25 patients who underwent both 2D-FT TOF MRA and contrast medium based angiography. Review of the 45 vessels demonstrated re-circulation artefact in 21 vessels, true stenotic defect in 8 vessels, and no filling defect in 16 vessels on 2D-FT TOF MRA. We compared the findings of re-circulation artefact and true stenotic defect in 29 vessels excluding the 16 vessels without filling defect. The following were evaluated: (1) preservation of posterior wall contour; (2) marginal character of filling defect; (3) darkness of filling defect; (4) involvement of common carotid artery by filling defect; (5) size of filling defect. In four out of the five evaluated items, statistically significant difference was present between re-circulation artefact group and true stenotic defect group (p<0.01 in all four items, chi(2) ...Continue Reading

References

Mar 1, 1990·AJR. American Journal of Roentgenology·C M AndersonR E Lee
Feb 1, 1988·AJR. American Journal of Roentgenology·W D MiddletonT L Lawson
Jan 1, 1984·Stroke; a Journal of Cerebral Circulation·M Motomiya, T Karino
Oct 27, 1998·European Journal of Radiology·T ScarabinoU Salvolini

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Citations

May 26, 2012·AJNR. American Journal of Neuroradiology·M EtesamiB A Wasserman
Mar 19, 2008·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·Peter J YimJohn L Nosher
Jun 11, 2009·Topics in Magnetic Resonance Imaging : TMRI·Prashant RaghavanC Douglas Phillips

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