Strain measurement of abdominal aortic aneurysm with real-time 3D ultrasound speckle tracking

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Objectives: Abdominal aortic aneurysm rupture is caused by mechanical vascular tissue failure. Although mechanical properties within the aneurysm vary, currently available ultrasound methods assess only one cross-sectional segment of the aorta. This study aims to establish real-time 3-dimensional (3D) speckle tracking ultrasound to explore local displacement and strain parameters of the whole abdominal aortic aneurysm. Materials and methods: Validation was performed on a silicone aneurysm model, perfused in a pulsatile artificial circulatory system. Wall motion of the silicone model was measured simultaneously with a commercial real-time 3D speckle tracking ultrasound system and either with laser-scan micrometry or with video photogrammetry. After validation, 3D ultrasound data were collected from abdominal aortic aneurysms of five patients and displacement and strain parameters were analysed. Results: Displacement parameters measured in vitro by 3D ultrasound and laser scan micrometer or video analysis were significantly correlated at pulse pressures between 40 and 80 mmHg. Strong local differences in displacement and strain were identified within the aortic aneurysms of patients. Conclusion: Local wall strain of the whole abdominal aortic aneurysm can be analysed in vivo with real-time 3D ultrasound speckle tracking imaging, offering the prospect of individual non-invasive rupture risk analysis of abdominal aortic aneurysms. © 2012 European Society for Vascular Surgery. Published by Elsevier Ltd. All rights reserved.




Bihari, P., Shelke, A., Nwe, T. H., Mularczyk, M., Nelson, K., Schmandra, T., … Schmitz-Rixen, T. (2013). Strain measurement of abdominal aortic aneurysm with real-time 3D ultrasound speckle tracking. European Journal of Vascular and Endovascular Surgery, 45(4), 315–323.

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