Print Email Facebook Twitter Cardiac Shear Wave Elastography Using a Clinical Ultrasound System Title Cardiac Shear Wave Elastography Using a Clinical Ultrasound System Author Strachinaru, Mihai (Erasmus MC) Bosch, Johan G. (Erasmus MC) van Dalen, Bas M. (Erasmus MC) van Gils, Lennart (Erasmus MC) van der Steen, A.F.W. (TU Delft ImPhys/Acoustical Wavefield Imaging; Erasmus MC) de Jong, N. (TU Delft ImPhys/Acoustical Wavefield Imaging; Erasmus MC) Geleijnse, Marcel L. (Erasmus MC) Vos, H.J. (TU Delft ImPhys/Acoustical Wavefield Imaging; Erasmus MC) Date 2017-08-01 Abstract The propagation velocity of shear waves relates to tissue stiffness. We prove that a regular clinical cardiac ultrasound system can determine shear wave velocity with a conventional unmodified tissue Doppler imaging (TDI) application. The investigation was performed on five tissue phantoms with different stiffness using a research platform capable of inducing and tracking shear waves and a clinical cardiac system (Philips iE33, achieving frame rates of 400–700 Hz in TDI by tuning the normal system settings). We also tested the technique in vivo on a normal individual and on typical pathologies modifying the consistency of the left ventricular wall. The research platform scanner was used as reference. Shear wave velocities measured with TDI on the clinical cardiac system were very close to those measured by the research platform scanner. The mean difference between the clinical and research systems was 0.18 ± 0.22 m/s, and the limits of agreement, from −0.27 to +0.63 m/s. In vivo, the velocity of the wave induced by aortic valve closure in the interventricular septum increased in patients with expected increased wall stiffness. Subject ElastographyHigh-frame-rate tissue DopplerShear wavesStiffness To reference this document use: http://resolver.tudelft.nl/uuid:389c851c-5309-48fd-8065-c5ada341313e DOI https://doi.org/10.1016/j.ultrasmedbio.2017.04.012 ISSN 0301-5629 Source Ultrasound in Medicine & Biology, 43 (8), 1596-1606 Part of collection Institutional Repository Document type journal article Rights © 2017 Mihai Strachinaru, Johan G. Bosch, Bas M. van Dalen, Lennart van Gils, A.F.W. van der Steen, N. de Jong, Marcel L. Geleijnse, H.J. Vos Files PDF 1_s2.0_S0301562917301771_main.pdf 1.4 MB Close viewer /islandora/object/uuid:389c851c-5309-48fd-8065-c5ada341313e/datastream/OBJ/view