Experimental study on temperature rise of acoustic radiation force elastography
Experimental study on temperature rise of acoustic radiation force elastography
复制标题
声辐射力弹性成像温升实验研究
DOI：
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发表时间：
2012
影响因子：
1.8
通讯作者：
K. Hashiba
中科院分区：
文献类型：
--
作者：
M. Tabaru;H. Yoshikawa;T. Azuma;R. Asami;K. Hashiba
声辐射力（ARF）弹性成像技术是一种用于人体组织弹性成像的新技术。因为一个“推波”，是用来产生ARF是一个长的突发波，在定期的临床imaging.Materials和方法，我们专注于在远场的瞬态温度上升，其中的光束路径是重叠的，使用的，其安全性的详细调查。模拟体模的软组织和骨样本暴露于2 MHz平面波20 s。使用热电偶测量远场的温升。通过拟合实验结果来估计位移测量所需时间1ms时的温度上升。结果表明，骨的温度敏感性是体模的36倍，重复使用推波可能超过了骨表面允许的最大温升1°C。应仔细检查，并应调整连续使用的时间间隔，以防止骨表面的热风险。
IntroductionAcoustic radiation force (ARF) elastography is potentially useful for imaging the elasticity of human tissue. Because a “push wave” that is used to generate ARF is a long burst wave comparable to that used in regular clinical imaging, detailed investigation of its safety is required.Materials and methodsWe focus on the transient temperature rise in the far field, where the beam paths are overlapped. Soft tissue mimicking a phantom and bone samples were exposed to a 2-MHz plane wave for 20 s. The temperature rises in the far field were measured using a thermocouple. The temperature rises at 1 ms, the time required for the displacement measurement, were estimated by fitting the experimental results. The results showed that the thermosensitivity of the bone was 36 times higher than that of the phantom, and the use of a repeated push wave may have exceeded the allowable maximum temperature rise, 1°C, on the bone surface.ConclusionIn conclusion, the imaging area, including the path of the push wave, should be carefully checked and the time interval for consecutive use should be adjusted to prevent thermal risk on the surface of the bone.
影响因子：
2.9
作者：
Alam, SK;Ophir, J
通讯作者：
Ophir, J