What is the role of tissue Doppler imaging in fetal echocardiography?

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Multiple Choice

What is the role of tissue Doppler imaging in fetal echocardiography?

Tissue Doppler imaging provides information about how the fetal heart muscle itself moves, not the flow of blood. By placing the Doppler sample at the mitral or tricuspid annulus, you get myocardial velocity waves: a systolic velocity (s') and diastolic velocities (e' and a'). These values reflect how well the heart contracts in systole and relaxes in diastole, allowing estimation of overall systolic and diastolic function. This functional insight is especially helpful when anatomy looks normal but there may be subtle myocardial impairment due to growth restriction, hypoxia, or cardiac conditions. It complements 2D and conventional Doppler imaging, which assess structure and flow but not muscle performance. It isn’t used for measuring chamber volumes or visualizing valve morphology, and fetal heart rate is measured with other methods.

Tissue Doppler imaging provides information about how the fetal heart muscle itself moves, not the flow of blood. By placing the Doppler sample at the mitral or tricuspid annulus, you get myocardial velocity waves: a systolic velocity (s') and diastolic velocities (e' and a'). These values reflect how well the heart contracts in systole and relaxes in diastole, allowing estimation of overall systolic and diastolic function. This functional insight is especially helpful when anatomy looks normal but there may be subtle myocardial impairment due to growth restriction, hypoxia, or cardiac conditions. It complements 2D and conventional Doppler imaging, which assess structure and flow but not muscle performance. It isn’t used for measuring chamber volumes or visualizing valve morphology, and fetal heart rate is measured with other methods.

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