Why the study?
Does Myocardial velocity gradient (MVG) measured by M-mode Doppler tissue imaging accurately reflect left ventricular global function compared to invasive hemodynamic indices?
Does Myocardial velocity gradient (MVG) measured by M-mode Doppler tissue imaging accurately reflect left ventricular global function compared to invasive hemodynamic indices?
Peak positive and negative myocardial velocity gradients measured by M-mode Doppler tissue imaging are sensitive, load-insensitive indicators of left ventricular global function that correlate strongly with invasive hemodynamic measurements.
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MVG by M-mode DTI may serve as a load-insensitive LV function marker; leaves open prospective validation as a noninvasive surrogate.
Ueno et al. (2002) studied this question.
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