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| Home > Publications Database > Detection of Cerebral Microbleeds With Venous Connection at 7-Tesla MRI. |
| Home > Publications Database > Detection of Cerebral Microbleeds With Venous Connection at 7-Tesla MRI. |
| Journal Article | DZNE-2021-01271 |
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2021
Ovid
[S.l.]
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Please use a persistent id in citations: doi:10.1212/WNL.0000000000011790
Abstract: Cerebral microbleeds (MBs) are a common finding in patients with cerebral small vessel disease (CSVD) and Alzheimer disease as well as in healthy elderly people, but their pathophysiology remains unclear. To investigate a possible role of veins in the development of MBs, we performed an exploratory study, assessing in vivo presence of MBs with a direct connection to a vein.7-Tesla (7T) MRI was conducted and MBs were counted on quantitative susceptibility mapping (QSM). A submillimeter resolution QSM-based venogram allowed identification of MBs with a direct spatial connection to a vein.A total of 51 people (mean age [SD] 70.5 [8.6] years, 37% female) participated in the study: 20 had CSVD (cerebral amyloid angiopathy [CAA] with strictly lobar MBs [n = 8], hypertensive arteriopathy [HA] with strictly deep MBs [n = 5], or mixed lobar and deep MBs [n = 7], 72.4 [6.1] years, 30% female) and 31 were healthy controls (69.4 [9.9] years, 42% female). In our cohort, we counted a total of 96 MBs with a venous connection, representing 14% of all detected MBs on 7T QSM. Most venous MBs (86%, n = 83) were observed in lobar locations and all of these were cortical. Patients with CAA showed the highest ratio of venous to total MBs (19%) (HA = 9%, mixed = 18%, controls = 5%).Our findings establish a link between cerebral MBs and the venous vasculature, pointing towards a possible contribution of veins to CSVD in general and to CAA in particular. Pathologic studies are needed to confirm our observations.
Keyword(s): Aged (MeSH) ; Cerebral Hemorrhage: diagnostic imaging (MeSH) ; Cerebral Hemorrhage: etiology (MeSH) ; Cerebral Hemorrhage: pathology (MeSH) ; Cerebral Small Vessel Diseases: complications (MeSH) ; Cerebral Small Vessel Diseases: pathology (MeSH) ; Female (MeSH) ; Humans (MeSH) ; Image Interpretation, Computer-Assisted (MeSH) ; Magnetic Resonance Imaging (MeSH) ; Male (MeSH) ; Middle Aged (MeSH) ; Neuroimaging: methods (MeSH) ; Veins: diagnostic imaging (MeSH) ; Veins: pathology (MeSH)
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