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We have recently demonstrated the feasibility of vascular guided wave imaging (VGWI) in non-invasive estimation of bi-plane (i.e., longitudinal and transverse) transmural arterial Young's modulus (ELV, ETV) in tubular phantoms using phase velocity (cph) (Guo et al., ITEC 2016). In this study, we further compare the ETV estimated from the circumferential Lamb type (CLT) wave by VGWI with ETP from the...
Ultrasound shear wave elastography (SWE) is an emerging technique for characterizing local arterial stiffness - a known indicator for vascular health. However, the implications due to vascular anatomy and tissue environment are still relatively under-examined. Using polyvinyl alcohol (PVA) based tissue mimicking phantoms, this study assessed the current signal processing framework in demonstrating...
We have previously proposed a novel method for measuring arterial stiffness using shear wave imaging (SWI). In this study, we evaluate the performance of this method on a healthy population (N=30) and we compare it to local measurement of the arterial pulse wave velocity (PWV) achieved at the same arterial site using ultrafast imaging. Ultrafast imaging was used to track shear wave induced remotely...
Vascular diseases (e.g., abdominal aortic aneurysm or, AAA) lead to changes in the regional aortic wall mechanical properties. Pulse-Wave Imaging (PWI) was previously developed by our group to map the pulse-wave propagation along the abdominal aorta of mice in vivo. In this study, the feasibility of PWI with real-time scanning is shown in human abdominal aortas in vivo. The abdominal aortas of five...
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