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Motion correction in contrast-enhanced ultrasound scans of carotid atherosclerotic plaques

机译:颈动脉粥样硬化斑块超声增强扫描中的运动校正

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Contrast Enhanced Ultrasound has shown great potential in detecting vulnerable atherosclerotic plaques, but an effective motion correction crucial for identifying relevant plaque features is still lacking. In this article, a semi-automated algorithm capable of non-rigidly registering contrast enhanced ultrasound scans of the carotid artery is proposed, employing information about the lumen and its deformation at different phases of the cardiac cycle, in order to segment the lumen and improve the registration process. The proposed registration is compared to state of the art algorithms. Significant improvements can be achieved, especially in the regions within and surrounding the plaques. A 77% reduction has been reported in grayscale variability for a stationary scatter, compared to reference algorithms.
机译:对比增强超声已显示出检测脆弱的动脉粥样硬化斑块的巨大潜力,但仍然缺乏有效的运动校正,对于识别相关的斑块特征至关重要。在本文中,提出了一种半自动算法,该算法能够非刚性地记录颈动脉的对比增强超声扫描,利用关于心动周期不同阶段的管腔及其变形的信息,以对管腔进行分割并改善注册过程。将建议的注册与最新算法进行比较。可以实现显着的改善,尤其是在斑块内和斑块周围的区域。与参考算法相比,据报道静止散射的灰度变异性降低了77%。

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