Interpolation time-optimized aortic pulse wave velocity estimation by 4D flow MRI.

ABSTRACT: Four-dimensional flow magnetic resonance imaging-based pulse wave velocity (4D flow PWV) estimation is a promising tool for measuring regional aortic stiffness for non-invasive cardiovascular disease screening. However, the effect of variations in the shape of flow waveforms on 4D flow PWV measurements remains unclear. In this study, 4D flow PWV values were compared using cross-correlation algorithm with different interpolation times (iTs) based on flow rate and beat frequency. A critical iT (iT_Crit) was proposed from in vitro study using flexible and stiff phantom models to simultaneously achieve a low difference and a low computation time. In vivo 4D flow PWV values from six healthy volunteers were also compared between iT_Crit and the conventionally used interpolati

SUBMITTER: Park S 

PROVIDER: S-EPMC10542805 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature