EVALUATION OF STONE FEATURES THAT CAUSE THE COLOR DOPPLER ULTRASOUND TWINKLING ARTIFACT
EVALUATION OF STONE FEATURES THAT CAUSE THE COLOR DOPPLER ULTRASOUND TWINKLING ARTIFACT
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DOI：
10.1016/j.ultrasmedbio.2021.01.016
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发表时间：
2021-03-23
影响因子：
2.9
通讯作者：
Simon, Julianna C.
中科院分区：
文献类型：
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作者：
Rokni, Eric;Zinck, Scott;Simon, Julianna C.
彩色多普勒超声闪烁伪影是在43%-96%的肾结石中出现的快速色移。从理论上说，肾结石表面的微泡会导致闪烁，因为暴露在0.41-1.13 MPa（约为诊断超声压力的0.5-1倍和环境压力的5-10倍）的升高静压下会减少闪烁。然而，目前还不清楚是什么外部和内部的石头特征支持气泡。采用彩色多普勒超声在2.5、5和18.5 MHz波段对13例离体肾结石进行扫描。用环境扫描电子显微镜或水下微型计算机断层扫描对选定的宝石进行成像，以评估可能引起闪烁的特征。结果显示，较低的频率产生了更多的闪烁。凝结首先发生在最小的(？直径1毫米)表面孔隙，并可能指示气泡形成的位置。在三颗被测试的石头中，有两颗被发现有气泡，这可能是导致闪烁的原因。总的来说，这些结果提供了外部和内部空腔结构以及它们与闪烁伪影的相关性的证据。这表明微气泡可能存在于肾结石的表面和内部，并可能导致闪烁的神器。（电子邮件：ezr144@psu.edu） ？2021年世界医学和生物学超声联合会。版权所有。
color Doppler ultrasound twinkling artifact is a rapid color shift that appears on 43%-96% of kidney stones. Surface microbubbles on kidney stones are theorized to cause twinkling as exposure to elevated static pressures of 0.41-1.13 MPa (approximately 0.5-1 times diagnostic ultrasound pressure and 5-10 times ambient pressure) reduced twinkling. However, it is unclear what external and internal stone features support bubbles. Thirteen ex vivo kidney stones were scanned with color Doppler ultrasound at 2.5, 5 and 18.5 MHz. Select stones were imaged with environmental scanning electron microscopy or underwater micro-computed tomography to evaluate features that may cause twinkling. Results revealed that the lower frequencies produced larger volumes of twinkling. Condensation first occurred in the smallest (?1 mm diameter) surface pores and may be indicative of where bubbles form. Gas pockets were seen inside two of three tested stones that may contribute to twinkling. Overall, these results provide evidence of cavity structures both externally and internally and their correlation to the twinkling artifact. This indicates that microbubbles may be present on and within kidney stones and may contribute to the twinkling artifact.(E-mail: ezr144@psu.edu) ? 2021 World Federation for Ultrasound in Medicine & Biology. All rights reserved.