Subwavelength motion-correction for ultrafast ultrasound localization microscopy
Subwavelength motion-correction for ultrafast ultrasound localization microscopy
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DOI：
10.1016/j.ultras.2017.01.008
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发表时间：
2017-05-01
期刊：
影响因子：
4.2
通讯作者：
Couture, Olivier
中科院分区：
文献类型：
--
作者：
Hingot, Vincent;Errico, Claudia;Couture, Olivier
超快超声定位显微镜使用微泡，单独定位的分辨率低于10 μ m。微泡的位置被累积以创建超分辨率图像，其绕过空间分辨率的衍射极限。然而，微泡定位在微米尺度上受到生理运动的影响。在这里，我们展示了一个相位相关的方法进行刚体运动校正。时空滤波器提取以组织为主的图像，跟踪这些图像以校正线性运动并提高微泡定位的精度，从而提高图像质量。这是第一次对运动组织中的全运动校正策略和超分辨率成像进行概念验证。(C)2017爱思唯尔B.V.保留所有权利。
Ultrafast Ultrasound Localization Microscopy uses microbubbles that are individually localized with a resolution below 10 mu m. Positions of the microbubbles are accumulated to create a super resolution image, which bypass the diffraction-limit of spatial resolution. However, microbubbles localization is affected by physiological motions at the micrometric scale. Here, we demonstrate a phase correlation method for rigid motion correction. Spatiotemporal filters extract tissue dominated images, which are tracked to correct linear motions and improve the precision of microbubbles' localization, improving the quality of the image. It is the first proof of concept towards a full motion correction strategy and super-resolution imaging in moving tissues. (C) 2017 Elsevier B.V. All rights reserved.