Table 4: Correlation of ultrasound parameters with white-matter hyperintensities on brain MRI.

VariableSpearman’s

Extracranial circulation
 CCA-Dsys+0.501<0.001
 CCA-Ddia+0.506<0.001
 CCA-Dmea+0.508<0.001
 CCA-PSV−0.2560.067
 CCA-EDV−0.2050.144
 CCA-MFV−0.1340.342
 ICA-PSV−0.1350.341
 ICA-EDV−0.3240.019
 ICA-MFV−0.3630.008
 CCA-IMT+0.2280.104

Intracranial circulation
 MCA-MFV−0.0410.819
 MCA-PI+0.516<0.001