Are systolic velocity duplex metrics negatively affected by flow aliasing in areas of critical internal carotid artery stenosis

Purpose: 843 Duplex scanning is a useful noninvasive screening tool for the detection of carotid bifurcation disease.Internal carotid artery (ICA) peak systolic velocity (PSV) and ICA/common carotid artery (CCA) PSV ratios are proven metrics determining 70%-99% ICA stenosis.A potential disadvantage of using dramatically increasing systolic velocity

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Contamination characteristics, source analysis and health risk assessment of heavy metals in the soil in Shi River Basin in China based on high density sampling

To explore the contamination of heavy metals in the Shi River Basin BOOK soil in China, a high density sampling of surface soil was conducted.In this study, an absolute principal component scores multiple linear regression model (APCS-MLR) was used to identify the sources of heavy metals in the soil and quantify their amounts.The methods to assess

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