Combining PIV and LASCA provides complementary spatial and temporal resolution for detailed in vitro analysis of complex pulsatile flow in vascular models.
Facilitates in vitro vascular flow analysis; leaves open clinical translation pending in vivo validation.
A preliminary comparative measurement between particle imaging velocimetry (PIV) and laser speckle contrast analysis (LASCA) to study pulsatile flow using ventricular assist device in a patient-specific carotid artery phantom is reported. These full-field optical techniques have both been used to study flow and extract complementary parameters. We use the high spatial resolution of PIV to generate a full velocity map of the flow field and the high temporal resolution of LASCA to extract the detailed frequency spectrum of the fluid pulses. Using this combination of techniques a complete study of complex pulsatile flow in an intricate flow network can be studied.
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Nemati et al. (2015) studied this question.
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