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Research ArticleBrain

Persistent Falcine Sinus: Is It Really Rare?

C.-W. Ryu
American Journal of Neuroradiology February 2010, 31 (2) 367-369; DOI: https://doi.org/10.3174/ajnr.A1794
C.-W. Ryu
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Abstract

BACKGROUND AND PURPOSE: The falcine sinus has been considered as a rare variation of the venous pathway between the dural layers of the falx cerebri. The purpose of this study was to evaluate the incidence of falcine sinus and its anatomic characteristics by using CTA.

MATERIALS AND METHODS: A total of 586 consecutive patients were enrolled in this study. A falcine sinus on CTA was defined as a midline venous structure connecting the vein of Galen or the internal sagittal sinus with the superior sagittal sinus. When present, anatomic features of the falcine sinus were evaluated.

RESULTS: Falcine sinuses were present in 12 patients (2.1%). Only 1 case was associated with a congenital anomaly, a dysplastic tentorium. Eight patients had absent or rudimentary straight sinuses, and 4 patients had normal straight sinuses.

CONCLUSIONS: In contrast to previous reports, falcine sinuses were not rare in the adult population, and most falcine sinuses were not associated with a congenital anomaly or sinus occlusion. Knowledge and recognition of these falcine sinuses are useful and important during the interpretation of brain CTA.

Abbreviations

CTA
CT angiography
DSA
digital subtraction angiography
F/U
follow-up
ICH
intracerebral hematoma
ISS
inferior sagittal sinus
MIP
maximum intensity projection
SAH
subarachnoid hemorrhage
SSS
superior sagittal sinus
VR
volume-rendering.
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American Journal of Neuroradiology: 31 (2)
American Journal of Neuroradiology
Vol. 31, Issue 2
1 Feb 2010
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Cite this article
C.-W. Ryu
Persistent Falcine Sinus: Is It Really Rare?
American Journal of Neuroradiology Feb 2010, 31 (2) 367-369; DOI: 10.3174/ajnr.A1794

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Persistent Falcine Sinus: Is It Really Rare?
C.-W. Ryu
American Journal of Neuroradiology Feb 2010, 31 (2) 367-369; DOI: 10.3174/ajnr.A1794
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