Lin Che-Yu, Chen Pei-Yu, Shau Yio-Wha, Wang Chung-Li
Department of Orthopaedic Surgery, School of Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan.
Department of Orthopaedic Surgery, School of Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Orthopaedic Surgery, National Taiwan University Hospital, Taipei, Taiwan.
Ultrasound Med Biol. 2017 Feb;43(2):517-530. doi: 10.1016/j.ultrasmedbio.2016.09.018. Epub 2016 Oct 25.
Supersonic shear wave elastography is a novel ultrasound technology that allows objective evaluation of soft tissue stiffness. The purpose of this study is to report an artifact in supersonic shear wave elastography that may strongly affect the accuracy and quality of the measurement of soft tissue stiffness, and to step-by-step describe how the artifact was found and how it was verified by a series of experiments under different conditions. There were a total of three longitudinal band-like artifacts, 1.3 cm apart from each other on the entire image along the length of the SuperLinear SL15-4 transducer surface, with the middle one at the center of the image. When using supersonic shear wave elastography, users should be keenly aware of the possible occurrence of the artifact and avoid it by choosing the quantification measurement regions of interest (ROIs) away from the artifact regions.
超声剪切波弹性成像技术是一种新型的超声技术，可对软组织硬度进行客观评估。本研究旨在报告一种可能会严重影响软组织硬度测量准确性和质量的超声剪切波弹性成像伪像，并逐步描述该伪像的发现过程以及如何在不同条件下通过一系列实验对其进行验证。在整个图像上，沿着SuperLinear SL15-4换能器表面的长度方向，共有三个纵向带状伪像，彼此间隔1.3厘米，中间一个位于图像中心。在使用超声剪切波弹性成像时，用户应敏锐地意识到可能会出现该伪像，并通过选择远离伪像区域的感兴趣定量测量区域（ROIs）来避免它。
