Colour-Doppler echocardiography flow field velocity reconstruction using a streamfunction-vorticity formulation.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 33259749.
- Also identified by DOI 10.1098/rsif.2020.0741 and PMC identifier 7811584.
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Abstract
We introduce a new method (<i>Do</i>ppler <i>Ve</i>locity <i>R</i>econstruction or DoVeR), for reconstructing two-component velocity fields from colour Doppler scans. DoVeR employs the streamfunction-vorticity equation, which satisfies mass conservation while accurately approximating the flow rate of rotation. We validated DoVeR using artificial colour Doppler images generated from computational fluid dynamics models of left ventricle (LV) flow. We compare DoVeR against the conventional intraventricular vector flow mapping (iVFM<sub>1D</sub>) and reformulated iVFM (iVFM<sub>2D</sub>). LV model error analysis showed that DoVeR is more robust to noise and probe placement, with noise RMS errors (<i>nRMSE</i>) between 3.81% and 6.67%, while the iVFM methods delivered 4.16-24.17% for iVFM<sub>1D</sub> and 4.06-400.21% for iVFM<sub>2D</sub>. We test the DoVeR and iVFM methods using <i>in vivo</i> mouse LV ultrasound scans. DoVeR yielded more haemodynamically accurate reconstructions, suggesting that it can provide a more reliable approach for robust quantification of cardiac flow.
Medical subject headings
- Echocardiography, Doppler, Color
- Image Interpretation, Computer-Assisted