Effect of dissolved oxygen level of water on ultrasonic power measured using calorimetry
Effect of dissolved oxygen level of water on ultrasonic power measured using calorimetry
复制标题
水的溶解氧水平对使用量热法测量的超声波功率的影响
DOI：
10.7567/jjap.57.07lc04
复制
发表时间：
2018
影响因子：
1.5
通讯作者：
R. Horiuchi
中科院分区：
文献类型：
--
作者：
T. Uchida;M. Yoshioka;R. Horiuchi
超声治疗设备，它暴露人体的高功率超声波，在临床实践中用于治疗癌症。然而，大功率超声波的安全性一直受到质疑，因为该设备不仅影响癌细胞，还影响正常细胞。为了评价超声的安全性，需要准确测量设备的超声功率。这是因为超声功率是与超声热危害相关的关键量。然而，用于测量超过15 W的超声功率的精确技术尚未建立。我们一直在研究量热法作为一种精确的测量技术。在这项研究中，我们研究了水的溶解氧（DO）水平对超声波功率的影响量热法。结果表明，不同溶解氧水平的水样，其超声功率存在显著差异。超声功率的这种差异是由声空化引起的。
Ultrasonic therapeutic equipment, which exposes the human body to high-power ultrasound, is used in clinical practice to treat cancer. However, the safety of high-power ultrasound has been questioned because the equipment affects not only cancer cells but also normal cells. To evaluate the safety of ultrasound, it is necessary to accurately measure the ultrasonic power of the equipment. This is because ultrasonic power is a key quantity related to the thermal hazard of ultrasound. However, precise techniques for measuring ultrasonic power in excess of 15 W are yet to be established. We have been studying calorimetry as a precise measurement technique. In this study, we investigated the effect of the dissolved oxygen (DO) level of water on ultrasonic power by calorimetry. The results show that the measured ultrasonic power differed significantly between water samples of different DO levels. This difference in ultrasonic power arose from acoustic cavitation.