Recalculation of the PWV using the MRA measurements improved the correlation between PWV and age (cf-PWV EXT rho = 0.5, cf.-PWV MRA rho = 0.65, p < 0.001 for both) and pulse pressure (cf-PWV EXT rho = 0.5, cf.-PWV MRA rho = 0.52, p < 0.001 for both), see Table 3 for a full list of correlates. Neither cf.-PWV EXT nor cf.-PWV MRA differentiated between the four groups although the MRI PWV showed a trend towards differentiation between the groups (see Table 4 ).
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Effects of inaccuracies in arterial path length measurement on differences in MRI and tonometry measured pulse wave velocity.
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