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Visualization of Haemodynamics with Colour Doppler

There has continued to be a significant development in colour Doppler ultrasound systems over the last few years. This has led to improvements in both temporal and spatial resolution allowing us to visualise easily haemodynamics effects that could previously only be studied in vitro with specialized laboratory equipment. In this article I will describe some haemodynamic effects seen in normal arteries and present colour Doppler images demonstrating them. I will also briefly describe flow patterns seen at stenoses.