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- W1996322676 abstract "We have previously found that spectral analysis of ultrasound (US) can discriminate in vitro plaques from asymptomatic and symptomatic (transient ischemic attack within previous 4 weeks) patients. That study found no differences in percentages of lipid or thrombus between the two groups by optical microscopy/planimetry. The present study was to find out if another feature from the microscopy could show a difference. The number and size of spaces resulting from cell death or new blood vessels were measured to see if they related to symptoms or could help explain US differentiation. Twelve plaques from each group were examined by optical microscopy. The sizes and concentrations of two kinds of spaces, endothelial lined (vessel spaces) and unlined (tissue spaces), were correlated both with symptoms and also with the US tissue characterization scores from the previous study. Symptomatic vs. asymptomatic plaques showed a higher concentration and a larger size: 0.87 vs. 0.21 per mm(2) (p < 0.005) and 154 vs. 110 microm (p < 0.02). A discriminant function of spaces with symptoms as dependent variables correctly identified 91.7% of the plaques (p < 0.001). The concentration in plaques previously designated by US as true positive plaques or true negative was 1.21 vs. 0.22 per mm(2) (p < 0.005). spaces were increased in plaques of symptomatic patients and were related to UTC scores. Both the lined and unlined spaces were useful as predictors." @default.
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- W1996322676 date "2004-05-01" @default.
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- W1996322676 title "Carotid plaque spaces relate to symptoms and ultrasound scattering" @default.
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- W1996322676 doi "https://doi.org/10.1016/j.ultrasmedbio.2004.02.002" @default.
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