Key result
High frame rate Color Doppler imaging yielded diastolic intraventricular pressure gradient peak values that were not statistically different from standard color M-Mode.
Why the study?
Quantitative assessment with conventional Color Doppler imaging is limited by trade-offs in frame rate, field of view, and measurement quality, leaving open whether high frame rate CDI can quantitatively estimate intraventricular pressure gradients.
Does high frame rate color Doppler imaging provide accurate quantitative estimates of intraventricular pressure gradients compared to standard color M-Mode in healthy volunteers?
Cross-Sectional (n=29)
Does high frame rate color Doppler imaging provide accurate quantitative estimates of intraventricular pressure gradients compared to standard color M-Mode in healthy volunteers?
High frame rate color Doppler imaging can provide non-invasive, quantitative estimates of intraventricular pressure gradients comparable to standard color M-Mode.
Answers are grounded in this paper and cite their sources.
Supports high frame rate color Doppler for noninvasive IVPG estimation in volunteers; leaves open validation in patients with cardiac disease.
In echocardiography, Color Doppler imaging (CDI) is mainly used for a qualitative analysis of abnormal blood flows. Indeed, any quantitative assessment is hampered by the compromise between frame rate, field of view, and measurement quality. Recently, we showed that high frame rate (HFR) imaging techniques, applied to CDI, soften those limitations at the expense of reduced image quality and penetration depth. Therefore, the aim of this study was to assess whether HFR-CDI could provide non-invasive, quantitative estimates of the intraventricular pressure gradient (IVPG), which may be an important marker for the diagnosis of diastolic function. Acquisitions, conducted on 29 healthy volunteers, showed that both diverging wave and multiline transmission allow achieving a high enough frame rate for a quantitative use of CDI. Indeed, diastolic IVPG peak values obtained with HFR-CDI where not statistically different from those obtained with standard color M-Mode, i.e. the gold standard reference.
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Ramalli et al. (2020) conducted a cross-sectional in Healthy (n=29). High frame rate Color Doppler imaging (HFR-CDI) vs. Standard color M-Mode was evaluated on Diastolic intraventricular pressure gradient (IVPG) peak values. High frame rate Color Doppler imaging yielded diastolic intraventricular pressure gradient peak values that were not statistically different from standard color M-Mode.
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