Development of Ultrasound-Guided Resonant Cavity Applicator System: - Non-invasive Measurement of Temperature Distributions -@@@- 超音波画像診断装置を用いた非侵襲温度計測 -

Y. Iseki, Keito Nakamura, Daisuke Anan, Kazuo Kato
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引用次数: 9

Abstract

:This paper describes the ultrasound-guided resonant cavity applicator system which has a function for measuring temperature distributions non-invasively. We had already proposed the resonant cavity applicator for non-invasive hyperthermia treatments. In this heating system,it was shown that the applicator could heat deep seated tumor without undesirable hotspots. In addition,the resonant cavity applicator could control the heated area inside tumors corresponding to the symptom of the patients. In the clinic,a real time monitoring system to acquire the targeted area and temperature distributions inside human body is necessary for effective hyperthermia treatments. In this paper, we proposed the ultrasound-guided resonant cavity applicator system which has a possibility of measuring temperature distributions inside human body. The method of measuring temperature distributions was based on the thermal dependence of local change in speed of sound and thermal expansion. Here,we described the method to estimate temperature distributions inside the agar phantom heated by the developed ultrasound-guided resonant cavity applicator. First, we tried to heat the agar phantom inside a hot water bath to discuss the relationship between temperature rises and changes of the ultrasound images. Next, we measured temperature distributions inside the agar phantom heated by the resonant cavity applicator using a diagnostic ultrasound imaging system. Also,we discussed the results of the measured temperature distributions inside the agar phantom for controlling the heated area. From our heating experiments,it was confirmed that the proposed method was useful to measure temperature distributions and hotspot locations inside the heated object non-invasively.
Ultrasound-Guided Resonant Cavity Applicator系统:- Non-invasive Measurement of Temperature Distributions -@@@-利用超声波影像诊断设备的无创温度测量-
本文介绍了一种具有无创测量温度分布功能的超声引导谐振腔应用系统。我们已经提出谐振腔应用于非侵入性热疗。在此加热系统中,表明涂抹器可以加热深部肿瘤而没有不良热点。此外,谐振腔涂抹器可以根据患者的症状控制肿瘤内部的受热区域。在临床上,实时监测人体目标区域和温度分布是有效热疗治疗的必要条件。本文提出了一种可以测量人体内部温度分布的超声引导谐振腔应用系统。测量温度分布的方法是基于局部声速变化和热膨胀的热依赖性。在这里,我们描述了一种估计琼脂幻影内部温度分布的方法,这种温度分布是由所开发的超声引导谐振腔施加器加热的。首先,我们尝试在热水浴中加热琼脂模体,讨论温度升高与超声图像变化的关系。接下来,我们使用超声诊断成像系统测量了琼脂模体内部的温度分布,琼脂模体由谐振腔涂抹器加热。此外,我们还讨论了琼脂模体内温度分布的测量结果,以控制加热区域。通过加热实验,证实了该方法可以无创地测量被加热物体内部的温度分布和热点位置。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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