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• W2305585655 abstract "Background and Purpose— Arteriopathy is the leading cause of childhood arterial ischemic stroke. Mechanisms are poorly understood but may include inherent abnormalities of arterial structure. Extracranial dissection is associated with connective tissue disorders in adult stroke. Focal cerebral arteriopathy is a common syndrome where pathophysiology is unknown but may include intracranial dissection or transient cerebral arteriopathy. We aimed to quantify cerebral arterial tortuosity in childhood arterial ischemic stroke, hypothesizing increased tortuosity in dissection. Methods— Children (1 month to 18 years) with arterial ischemic stroke were recruited within the Vascular Effects of Infection in Pediatric Stroke (VIPS) study with controls from the Calgary Pediatric Stroke Program. Objective, multi-investigator review defined diagnostic categories. A validated imaging software method calculated the mean arterial tortuosity of the major cerebral arteries using 3-dimensional time-of-flight magnetic resonance angiographic source images. Tortuosity of unaffected vessels was compared between children with dissection, transient cerebral arteriopathy, meningitis, moyamoya, cardioembolic strokes, and controls (ANOVA and post hoc Tukey). Trauma-related versus spontaneous dissection was compared (Student t test). Results— One hundred fifteen children were studied (median, 6.8 years; 43% women). Age and sex were similar across groups. Tortuosity means and variances were consistent with validation studies. Tortuosity in controls (1.346±0.074; n=15) was comparable with moyamoya (1.324±0.038; n=15; P =0.998), meningitis (1.348±0.052; n=11; P =0.989), and cardioembolic (1.379±0.056; n=27; P =0.190) cases. Tortuosity was higher in both extracranial dissection (1.404±0.084; n=22; P =0.021) and transient cerebral arteriopathy (1.390±0.040; n=27; P =0.001) children. Tortuosity was not different between traumatic versus spontaneous dissections ( P =0.70). Conclusions— In children with dissection and transient cerebral arteriopathy, cerebral arteries demonstrate increased tortuosity. Quantified arterial tortuosity may represent a clinically relevant imaging biomarker of vascular biology in pediatric stroke." @default.
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• W2305585655 date "2016-05-01" @default.
• W2305585655 modified "2023-10-01" @default.
• W2305585655 title "Arterial Tortuosity: An Imaging Biomarker of Childhood Stroke Pathogenesis?" @default.
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• W2305585655 doi "https://doi.org/10.1161/strokeaha.115.011331" @default.
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