Parasternal Versus Apical View in Cardiac Natural Mechanical Wave Speed Measurements.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Lana B H KeijzerHendrik J Vos

Abstract

Shear wave speed measurements can potentially be used to noninvasively measure myocardial stiffness to assess the myocardial function. Several studies showed the feasibility of tracking natural mechanical waves induced by aortic valve closure in the interventricular septum, but different echocardiographic views have been used. This article systematically studied the wave propagation speeds measured in a parasternal long-axis and in an apical four-chamber view in ten healthy volunteers. The apical and parasternal views are predominantly sensitive to longitudinal or transversal tissue motion, respectively, and could, therefore, theoretically measure the speed of different wave modes. We found higher propagation speeds in apical than in the parasternal view (median of 5.1 m/s versus 3.8 m/s, , n = 9 ). The results in the different views were not correlated ( r = 0.26 , p = 0.49 ) and an unexpectedly large variability among healthy volunteers was found in apical view compared with the parasternal view (3.5-8.7 versus 3.2-4.3 m/s, respectively). Complementary finite element simulations of Lamb waves in an elastic plate showed that different propagation speeds can be measured for different particle motion components when different wa...Continue Reading

Citations

Oct 1, 2020·Cardiovascular Ultrasound·Mihai StrachinaruHendrik J Vos
Oct 30, 2020·Scientific Reports·Lana B H KeijzerHendrik J Vos
Aug 4, 2021·The Journal of the Acoustical Society of America·A SabbadiniM D Verweij

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