4-D ECHO-PARTICLE IMAGE VELOCIMETRY IN A LEFT VENTRICULAR PHANTOM
| Autor: | Nikola Radeljic, Nico de Jong, Hicham Saaid, Antonius F.W. van der Steen, Jason Voorneveld, Tom Claessens, Christiaan Schinkel, Frank J. H. Gijsen, Boris Lippe, Hendrik J. Vos, Sasa Kenjeres, Johan G. Bosch |
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| Přispěvatelé: | Cardiology |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Point spread function
DYNAMICS Acoustics and Ultrasonics MOTION Heart Ventricles Ultrasound image velocimetry Biophysics 4-D echo-PIV 01 natural sciences Imaging phantom 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Ultrafast ultrasound 0103 physical sciences Medicine and Health Sciences Vector flow imaging Radiology Nuclear Medicine and imaging 010301 acoustics Image resolution Echocardiography Four-Dimensional Physics Vector flow Radiological and Ultrasound Technology Phantoms Imaging Biology and Life Sciences Volumetric flow Blood flow Velocimetry VELOCITY Left ventricle High frame rate ultrasound Echo particle image velocimetry Transducer Particle image velocimetry Radiology Nuclear Medicine and imaging Tomographic PIV SPECKLE TRACKING 4-D ultrasound Rheology FLOW RECONSTRUCTION Blood Flow Velocity Biomedical engineering |
| Zdroj: | Ultrasound in Medicine and Biology, 46(3), 805-817. Elsevier Inc. Ultrasound in Medicine & Biology, 46(3) ULTRASOUND IN MEDICINE & BIOLOGY |
| ISSN: | 1879-291X 0301-5629 |
| DOI: | 10.1016/j.ultrasmedbio.2019.11.020 |
| Popis: | Left ventricular (LV) blood flow is an inherently complex time-varying 3-D phenomenon, where 2-D quantification often ignores the effect of out-of-plane motion. In this study, we describe high frame rate 4-D echo-cardiographic particle image velocimetry (echo-PIV) using a prototype matrix transesophageal transducer and a dynamic LV phantom for testing the accuracy of echo-PIV in the presence of complex flow patterns. Optical time-resolved tomographic PIV (tomo-PIV) was used as a reference standard for comparison. Echo-PIV and tomo-PIV agreed on the general profile of the LV flow patterns, but echo-PIV smoothed out the smaller flow structures. Echo-PIV also underestimated the flow rates at greater imaging depths, where the PIV kernel size and transducer point spread function were large relative to the velocity gradients. We demonstrate that 4-D echo-PIV could be performed in just four heart cycles, which would require only a short breath-hold, providing promising results. However, methods for resolving high velocity gradients in regions of poor spatial resolution are required before clinical translation. (C) 2019 The Author(s). Published by Elsevier Inc. on behalf of World Federation for Ultrasound in Medicine & Biology. |
| Databáze: | OpenAIRE |
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